Flora of New York/Acorales & Alismatales

Acorales & Alismatales Nymphaeales & magnoliids Nymphaeales & magnoliids Dioscoreales & Liliales Order Acorales The order Acorales consists of only the Acoraceae (sweetflag family), with Acorus as its only genus.Acorales Family Acoraceae Acorus Acorus calamus.spadix.jpg Acorus calamus Acorales Acoraceae AcorusAcorus Sweetflag 116 2 Acorus americanus (Raf.) Raf. 1828 Acorus calamus L. americanus Raf. Med. Fl. 1: 25 (1828) 1836 Acorus americanus (Raf.) Raf. New Fl. 1: 57 (1836) 1954 Acorus calamus L. americanus H.Wulff American sweet-flag American sweetflag Several-veined sweetflag Sweetflag Acore d'Amérique Acorus d'Amérique Belle-angélique Native Secure Fertile diploid (2n = 2x = 24) 5 OBL Perennial Herb-forb Sun 138 5 ACAM N 157984-Acorus-americanus 60458986-2 2432 acorus/americanus 182561 418734 222000002 2100001 ACAM Acorus+americanus Acorus%20americanus Acorus americanus nymap.svg 14 counties 5 counties Acorus americanus USFS-1.jpg 120 Acorus calamus L. 1753 Acorus calamus L. Sp. Pl.: 324 (1753) 1764 Calamus aromaticus Garsault Fig. Pl. Méd.: t. 40 (1764), opus utique oppr. 1840 Acorus angustatus Raf. Autik. Bot.: 196 (1840) Old World sweet-flag European sweetflag Single-veined sweetflag Flag-root Myrtle flag Acore roseau Acorus roseau Acore aromatique Belle-angélique Introduced Asia Sterile triploid (2n = 3x = 36) 0 OBL Perennial Herb-forb Sun 130 X ACCA4 X 82306-Acorus-calamus 77167492-1 2433 acorus/calamus 564989 1358 200027130 2100006 Acorus+calamus Acorus%20calamus Acorus calamus nymap.svg Acorus calamus 002.JPG Order Alismatales The order Alismatales as defined in the Angiosperm Phylogeny Website.Alismatales Family Araceae The plants of the Araceae (arum family) have numerous small flowers that are part of a spadix, a spike inflorescence on which the flowers are borne on a fleshy stem. The spadix is usually surrounded by a bract called a spathe. Subfamily Orontioideae The Orontioideae contains just two New York species, both native: Orontium aquaticum (golden club) and Symplocarpus foetidus (eastern skunk cabbage). This subfamily also includes the genus Lysichiton which comprises the western and Asian skunk cabbages, neither of which are known to have naturalized in New York. Orontium Orontium aquaticum5.jpg Orontium aquaticumgolden club Orontium aquaticum (golden club), the only living species of its genus, probably reaches the northern extent of its range in New York and adjacent New England. It is considered to be threatened in New York, where it is mostly found in Hudson River tidal marshes, but has been reported in acidic bogs and ponds farther inland. Alismatales Araceae Orontioideae Orontieae Orontium Goldenclub 568 1 Orontium aquaticum L. Carl von Linnaeus (1707-1778) Species Plantarum 1:324. 1 May 1753 1753 Orontium aquaticum L. 1895 Aronia aquatica (L.) Baill. Golden club Native Threatened 29440 Orontium aquaticum Threatened S2 G5 9 OBL Perennial Herb-forb Part shade 133 2 Orontium aquaticum L. - golden-club - In New York this species is known mostly from tidal marshes along the Hudson River. Most are freshwater although some are perhaps slightly brackish. The plants also occur in adjacent swamps. Also in acidic peat bogs and ponds (in one case planted and persisting in an acidic bog.) ORAQ N0 432495 2103069 ORAQ Orontium%20aquaticum Orontium aquaticum RHu 03.JPG Symplocarpus Symplocarpus foetidus Zazensou in nobusegatake 2008-4-4.JPG Symplocarpus foetidusskunk cabbage Skunk cabbage (Symplocarpus foetidus) is the only North American native of the genus. The western skunk cabbage is in the genus Lysichiton and has not been reported to have naturalized in New York. Alismatales Araceae Orontioideae Symplocarpeae Symplocarpus Skunk-cabbage 1027 1 Symplocarpus foetidus (L.) Salisb. ex W.P.C.Barton 1753 Dracontium foetidum L. 1808 Spathyema foetida (L.) Raf. nom. inval. 1812 Symplocarpus foetidus (L.) W.Salisb. 1817 Symplocarpus foetidus (L.) Salisb. ex W.P.C.Barton 1818 Symplocarpus foetidus Nutt. Skunk cabbage Polecatweed Chou puant Tabac-du-diable Native Secure 5 OBL Perennial Herb-forb Shade 131 5 Symplocarpus foetidus (L.) Salisb. ex Nutt. - Seepage springs and slopes, swamps, and wet floodplain forests. Symplocarpus foetidus is common in a variety of shaded wetlands although it does have a preference for cold seepage areas and mucky soils. SYFO NN 400340 200027331 50150424 SYFO Symplocarpus foetidus CT2.jpg Subfamily Lemnoideae Wolffia-Spirodela.jpg Duckweeds:• Spirodela polyrhiza (large),• Lemna minor (medium),• Wolffia arrhiza (small). The Lemnoideae contains the small aquatic plants known as duckweeds, or water lentils. This subfamily contains plants previously placed in the Lemnaceae. Spirodela Spirodela polyrhiza Prague 2014 1.jpg Spirodela polyrrhiza - common duck-meat Common duck-meat (Spirodela polyrrhiza) Alismatales Araceae Lemnoideae Spirodela Spirodela Duckmeat 661 1 Spirodela polyrrhiza (L.) Schleid. 1753 Lemna polyrhiza L. 1839 Spirodela polyrhiza Schleid. 1839 Spirodela polyrrhiza Schleid."The initial ρ of a Greek word transliterated as rh, e.g. rhiza (ριζα, root, rhizome), should have an additional r added to it when preceded by a vowel, e.g. Glycyrrhiza (γλυκυρριζα, liquorice, from γλυκος, sweet, ριζα, root), leptorrhiza (λεπτορριζα, with a thin root, from λεπτος, small, slender), but as many reputable authors, Linnaeus among them, have omitted this additional r, it is best regarded as optional and an author's original spelling, as in Lemna polyrhiza, should be accepted." - W. T. Stearn (1992), Botanical Latin ed. 4: 261. Common water-flaxseed Common duck-meal Common duck-meat Greater duckweed Giant duckweed Spirodèle polyrhize Native Secure OBL Perennial Herb-forb 1778 5 SPPO NN 6493 spirodela/polyrrhiza 505347 400337 200027353 18100004 Spirodela+polyrhiza Spirodela%20polyrhiza nymap.svg Spirodela polyrhiza sl1.jpg Lemna Alismatales Araceae Lemnoideae Lemna Lemna Duckweed 660 5 Lemna minor L. 1753 Lemna minor L. 1771 Lenticula minor (L.) Scop. 1816 Lemna minima Thuill. ex P.Beauv. 1901 Hydrophace minor (L.) Bubani Lesser duckweed Native Secure 2 1780 5 LEMI3 NN Lemna/minor Kleine Wasserlinse (Entengrütze).JPG Lemna trisulca L. 1753 Lemna trisulca L. Star duckweed --- Native Secure 4 1782 5 LETR NN Lemna/trisulca Lemna trisulca NRCS-1.jpg Lemna perpusilla Torr. 1843 Lemna perpusilla Torr. Minute duckweed Native Endangered 4 19647 Lemna perpusilla Endangered S1 G5 1785 1 LEPE NN Lemna/perpusilla Lemna perpusilla 3.JPG Lemna valdiviana Phil. 1864 Lemna valdiviana Phil. Pale duckweed Valdivia duckweed --- Native Endangered 10 19648 Lemna valdiviana Endangered S1 G5 1784 1 LEVA NN Lemna/valdiviana nymap.svg Lemna valdiviana NRCS-001 (4x3).jpg Lemna turionifera Landolt 1975 Lemna turionifera Landolt Turion duckweed Lenticulare turionifère --- Native Unranked 4 OBL 7135 U LETU2 NN Lemna/turionifera 503362 nymap.svg Lemna turionifera.jpg Lemna Duckweed 660 X (excluded species) Lemna gibba L. 1753 Lemna gibba L. Swollen duckweed N. America native Excluded X 160 LEGI N0 nymap.svg L gibba3.jpg Lemna obscura (Austin) Daubs 1965 Lemna obscura (Austin) Daubs 1867 Lemna minor L. obscura Austin Little duckweed N. America native Excluded X 636 EXCLUDED LEOB2 N0 416563 nymap.svg Aguas del lago de Maracaibo contaminadas por Lemna 02.JPG Wolffia Wolffia columbiana sl6.jpg Wolffia columbiana - Columbian watermeal The genus Wolffia (watermeal) contains the world's smallest flowering plants, each an undifferentiated, rootless floating body. These species are often found in mixed populations in still ponds, lakes, and marshes in various parts of the state. Alismatales Araceae Lemnoideae Wolffia Wolffia Watermeal 1022 3 Horkel ex Schleiden Wolffia columbiana H.Karst. 1865 Wolffia columbiana H.Karst 1892 Grantia columbiana (H.Karst.) MacMill. 1912 Bruniera columbiana (H.Karst.) Nieuwl. Columbian watermeal Columbia watermeal Columbian duckmeal Wolffie de Colombie Native Secure 1781 5 WOCO NN 6497 wolffia/columbiana nymap.svg Wolffia columbiana sl4.jpg Wolffia borealis (Engelm. ex Hegelm.) Landolt 1868 Wolffia brasiliensis Wedd borealis Engelm. ex Hegelm. 1986 Wolffia borealis (Engelm. ex Hegelm.) Landolt Dotted watermeal Northern watermeal Northern duckmeal Wolffie borèle Native Likely secure 1783 4 WOBO NN Wolffia borealis (Engelm. ex Hegelm.) Landolt ex Landolt & Wildi wolffia/borealis 505749 416574 222000451 18100047 2015.09.13 13.52.47 IMG 0449 - Flickr - andrey zharkikh (cropped).jpg Wolffia brasiliensis Wedd. 1849 Wolffia brasiliensis Wedd. ???? Bruniera punctata 1864 Wolffia punctata Griseb. ???? Wolffia papulifera Brazilian watermeal Native Likely secure 1779 4 WOBR N0 wolffia/brasiliensis 505750 416573 222000452 Wolffia brasiliensis.jpg Subfamily Aroideae Tribe Calleae Calla Calla palustris 7867.jpg Calla palustris - water arum Calla palustris is the sole species of the genus and is native to cool wetlands of the Northern Hemisphere, including those in New York State. Alismatales Araceae Aroideae Calleae Calla Callalily 783 1 Calla palustris L. 1753 Calla palustris L. Wild calla Water arum Calla des marais Native Secure OBL Perennial Herb-forb 134 5 CAPA NN 2677 calla/palustris 42546 102469 200027260 nymap.svg Calla palustris5.JPG Tribe Peltandreae Peltandra Peltandra virginica MA.jpg Peltandra virginica The genus Peltandra in New York contains the green arrow arum or tuckahoe (Peltandra virginica) Alismatales Araceae Aroideae Peltandreae Peltandra Arrow-arum 896 1 Peltandra virginica (L.) Raf. ex Schott 1832 Peltandra virginica (L.) Raf. ex Schott Green arrow arum Green arrow-arum Arrow arum Poison arum Tuckahoe Native Secure OBL Perennial Herb-forb 132 5 PEVI NN Peltandra/virginica 102483 Peltandra%20virginica nymap.svg Peltandra virginica kz02.jpg Tribe Arisaemateae The Arisaemateae includes two genera that can be found in New York: Arisaema and Pinellia. These include the plants known as Jack-in-the-pulpit and green dragon. Arisaema Arisaema triphyllum SCA-01641.jpg Arisaema triphyllum.Jack-in-the-pulpit Two species of Arisaema are native to New York: A. triphyllum (Jack-in-the-Pulpit) and A. dracontium (Green dragon). Three subspecies of Jack-in-the-Pulpit have been reported in New York. A. triphyllum ssp. triphyllum, a tetraploid with 2n:56 chromosomes, likely originated as a hybrid of subspecies stewardsonii and pusillum, each of which is a diploid with 2n:28 chromosomes.M. Treiber (1980). "Biosystematics of the Arisaema triphyllum Complex." PhD Dissertation, University of North Carolina, Chapel Hill. Alismatales Araceae Aroideae Arisaemateae Arisaema Arisaema Jack-in-the-pulpit 475 4 PedatisectaSusanne S. Renner, Li-Bing Zhang & Jin Murata (2004) "A chloroplast phylogeny of Arisaema (Araceae) illustrates Tertiary floristic links between Asia, North America, and East Africa." American Journal of Botany 91(6): 881-888. Mart. Arisaema triphyllum (L.) Schott triphyllum 1753 Arum triphyllum L. 1832 Arisaema triphyllum (L.) Schott 1835 Arisaema atrorubens (Aiton) Blume Common Jack-in-the-pulpit Indian Jack-in-the-pulpit Indian-turnip Arisème petit-prêcheur Native Secure FAC 135 5 ARTRT3 N 2676 arisaema/triphyllum 222000013 2105363 Arisaema triphyllum ssp triphyllum NY-dist-map.png Arisaema triphyllum - Jack-in-the-Pulpit - Petit prêcheur (6112116376).jpg Arisaema triphyllum (L.) Schott stewardsonii (Britton) Huttl. 1901 Arisaema stewardsonii Britton 1910 Arisaema triphyllum (L.) Schott stewardsonii Stevens 1920 Arisaema triphyllum (L.) Schott stewardsonii Engl. 1949 Arisaema triphyllum (L.) Schott stewardsonii Huttl. Stewardson's Jack-in-the-pulpit Swamp Jack-in-the-pulpit Arisème de Stewardson Arisèma de Stewardson Native Secure FAC 140 5 Onon-Tomp-Oswe-Madi ARTRS N Onon-Tomp-Oswe-Madi 2675 222000013 2104937 Arisaema triphyllum ssp stewardsonii NY-dist-map.png Arisaema triphyllum ssp stewardsonii iNat-71948898.jpg Arisaema triphyllum (L.) Schott pusillum (Peck) Huttl. 1898 Arisaema triphyllum pusillum Peck 1901 Arisaema pusillum (Peck) Nash 1903 Arisaema acuminatum Small 1921 Arisaema triphyllum acuminatum Engl. 1940 Arisaema triphyllum pusillum Fernald 1949 Arisaema triphyllum pusillum Huttl. --- Small jack-in-the-pulpit Peck's jack-in-the-pulpit Arisème nain --- Native Vulnerable 136 3 Ulst-Dutc-Rock-Bron ARTRP N Ulst-Dutc-Rock-Bron 2673 222000013 2104935 Arisaema triphyllum ssp pusillum NY-dist-map.png Arisaema triphyllum ssp. pusillum.png Arisaema triphyllum Arisaema triphyllum ssp. stewardsonii Arisaema triphyllum ssp. triphyllum Swamp Jack-in-the-pulpit Common Jack-in-the-pulpit Native Unknown FAC 7262 U nymap.svg Ny hybrid.svg Arisaema Green-dragon 475 4 Tortuosa Mart. Arisaema dracontium (L.) Schott 1753 Arum dracontium L. 1832 Arisaema dracontium (L.) Schott 1903 Muricauda dracontium (L.) Small --- Green dragon Dragon root Dragon arum Arisème dragon Arisèma dragon --- Native Likely secure 137 4 ARDR3 NN 2672 arisaema/dracontium 3998 222000012 2101479 Arisaema dracontium - Green Dragon.jpg Pinellia Pinellia ternata02.jpg Pinellia ternata Pinellia ternata (crowdipper) is being tracked as a potentially invasive plant in New York and New Jersey.New York Species Record for Pinellia ternata (crowdipper) in iMapInvasives, updated 8/8/2016 Alismatales Araceae Aroideae Arisaemateae Pinellia Pinellia Pinellia 287 1 Pinellia ternata (Thunb.) Makino 1784 Arum ternatum Thunb. 1837 Alocasia ternata (Thunb.) Raf. 1837 Atherurus ternatus (Thunb.) Blume 1901 Pinellia ternata (Thunb.) Makino Crowdipper Asian green dragon --- Introduced eastern Asia Potentially invasive Unknown naturalization 1094 30011 8678824 Untiered X Perennial Herb-forb SNA 2.138438/Pinellia_ternata Exotic 6867 X King (only) 8678824 166883-Pinellia-ternata Kings County 3 counties Pinellia ternata inlf-inside-abrimaal1.jpg Tribe Pistieae Pistia "+arya+" Pistia stratiotes ꦲꦥꦸꦲꦥꦸ apu-apu-Bulak Lor 2019 1.jpg Pistia stratiotes Water lettuce (Pistia stratiotes) is now listed with an Ecological Invasiveness rank of Very High and placed in New York State Tier 2.New York State Invasive Species Tiers, Water lettuce (Pistia stratiotes). Alismatales Araceae Aroideae Pistieae Pistia Water-lettuce 283 1 Pistia stratiotes L. 1753 Pistia stratiotes L. 1803 Pistia spathulata Michx. 1878 Pistia stratiotes L. spathulata Engl. Water-lettuce Tropical duckweed Nile cabbage Laitue d'eau Introduced US South South America Africa Very highly invasive Impersistent 62%Pistia stratiotes Not Assessable 62 139 X PIST2 N0 27976 78589-Pistia-stratiotes 42542 102491 2103622 Pistia stratiotes nymap.svg NYFA: 2 countiesiMap: 3 countiesiNat: 5 counties Starr 071121-0019 Pistia stratiotes.jpg Tribe Colocasieae Colocasia Taimo Okinawa.jpg Colocasia esculenta Alismatales Araceae Aroideae Colocasieae Colocasia Colocasia Taro 0 Colocasia esculenta (L.) Schott 1753 Arum esculentum L. 1801 Caladium esculentum (L.) Vent. 1832 Colocasia esculenta (L.) Schott 1832 Colocasia esculenta (L.) Schott esculenta 1832 Colocasia antiquorum Schott 1856 Colocasia antiquorum Schott esculenta (L.) Schott Coco yam 2021 iMapInvasives Introduced Highly invasive X 0 Not Listed nymap.svg Not listed xx counties Elephant Ear Flower Five.jpg Family Tofieldiaceae Triantha Alismatales Tofieldiaceae Triantha Tofieldia 1110 1 Triantha glutinosa (Michx.) Baker 1803 Narthecium glutinosum Michx. 1879 Triantha glutinosa (Michx.) Baker Sticky false-asphodel Native Endangered 1832 1 TRGL5 NN Triantha/glutinosa TRGL5 Triantha glutinosa.jpg Family Alismataceae The Alismataceae (water-plantain family) has about a dozen documented taxa in three genera growing outside of cultivation in New York. Sagittaria Sagittaria latifolia 1 (5097358241).jpg Sagittaria latifoliabroad-leaved arrowhead Alismatales Alismataceae Sagittaria Sagittaria Arrowhead 894 8 Sagittaria latifolia Broad-leaved arrowhead Wapato Common arrowhead Duck-potato --- Native Secure 3 OBL Perennial Herb-forb 44 5 Onon-Tomp-Oswe-Madi SALA2 N Sagittaria/latifolia Sagittaria latifolia WFNY-001.png Sagittaria rigida Sessile-fruited arrowhead Native Secure 6 OBL Perennial Herb-forb 43 5 Onon-Cayu-Tomp-Oswe SARI N Onon-Cayu-Tomp-Oswe Sagittaria/rigida Sagittaria rigida iNat-227430385.jpg Sagittaria graminea graminea Grass-leaved arrowhead Native Secure 8 OBL Perennial Herb-forb 45 5 Onon-Oswe-Sene-Onei SAGRG N Onon-Oswe-Sene-Onei Sagittaria/graminea Sagittaria graminea ssp graminea NY-dist-map.png Sagittaria graminea (14158688593).jpg Sagittaria cuneata Northern arrowhead Wapato Wapatum arrowhead Native Secure 6 OBL Perennial Herb-forb 47 5 SACU NN Sagittaria/cuneata Sagittaria cuneata-8-02-05.jpg Sagittaria engelmanniana Acid-water arrowhead Engelmann arrowhead Native Likely secure 9 OBL Perennial Herb-forb 46 4 Oswe-Livi-Oran-Rock SAEN N Nass-Suff (only) Sagittaria/engelmanniana Sagittaria engelmanniana (cropped).jpg Sagittaria subulata Strap-leaved arrowhead Native Rare 7 OBL Perennial Herb-forb 40 3 Tiog-Alba-Gree-Ulst SASU N Tiog-Alba-Gree-Wash Sagittaria/subulata Sagittaria subulata kz01 (cropped).jpg Sagittaria montevidensis spongiosa Lophotocarpus spathulatus Lophotocarpus spongiosus Sagittaria spathulata Sagittaria calycina var spongiosa Spongy-leaved arrowhead Tidal arrowhead Spongy arrowhead Hooded arrowhead Native Threatened 7 OBL Annual Herb-forb 41 2 Alba-Gree-Ulst-Colu SACAS N Alba,Green,Ulst,Colu,Dutc+5 Sagittaria/montevidensis 222000352 Sagittaria montevidensis ssp spongiosa NY-dist-map.png Sagittaria montevidensis 002.JPG Sagittaria teres Slender arrowhead Quill-leaved sagittaria Native Endangered 10 OBL Perennial Herb-forb 42 1 Suff (only) SATE2 N Suff (only) Sagittaria/teres 222000359 Sagittaria teres drawing.png Sagittaria australis (J.G.Sm.) Small 1897 Sagittaria longirostra australis J.G.Sm. 1903 Sagittaria australis (J.G.Sm.) Small auct Sagittaria engelmanniana longirostra non Micheli 1955 auct Sagittaria longirostra non J.G.Sm. Longbeak arrowhead Appalachian arrowhead N. America native Excluded X 154 SAAU2 N (1991) Sagittaria/australis 414323 222000328 900002 Excluded nymap.svg Long-beaked Arrowhead - Sagittaria australis, Prince William Forest Park, Triangle, Virginia.jpg Alisma Alisma subcordatum 144004501.jpg Alisma subcordatum Three species of water-plantains (genus Alisma) have been reported in New York State. Alismatales Alismataceae Alisma Alisma Water-plantain 62 3 Alisma subcordatum Raf. 1808. Alisma subcordatum Raf. in Med. Repos., ser. 2, 5:362 1813. Alisma parviflorum Pursh in Fl. Amer. Sept. 1:252 1824. Alisma plantago-aquatica var. parviflorum (Pursh) Torr. in Fl. N. Middle United States 1840. Alisma montanum Raf. in Autik. Bot.:62 1962. Alisma plantago-aquatica ssp. subcordatum (Raf.) Hultén in Kongl. Svenska Vetensk. American water-plantain Southern water-plantain Broad-leaved water-plantain Small water-plantain Alisma subcordé Native Secure 4 OBL Perennial Herb-forb S5, G5 36 24 counties 24 counties 130756-Alisma-subcordatum 16 counties 16 NYS counties 2865181 present in NY present in New York State ALSU N Rens,Wash,Oran,Colu,Putn+4 BSHP 8509-2 0000755500 390 2461 Alisma/subcordatum Alisma_subcordatum Alisma subcordatum - Water Plantain.jpg Alisma triviale Pursh 1808. Alisma roseum Raf. in Med. Repos., nom. nud. 1813. Alisma triviale Pursh in Fl. Amer. Sept. 1:252 1817. Alisma odoratum Raf. in Fl. Ludov.:17 1830. Alisma plantago-aquatica var. americanum Schult. & Schult.f. 1888. Alisma plantago-aquatica var. triviale (Pursh) Britton, Sterns & Poggenb. 1900. Alisma brevipes Greene in Pittonia 4:158 1908. Alisma superbum Lunell in Bull. Leeds Herb. 2:5 1908. Alisma superbum var. angustissimum Lunell in Bull. Leeds Herb. 2:5 1908. Alisma superbum var. lanceolatum Lunell in Bull. Leeds Herb. 2:5 1914. Alisma subcordatum var. superbum (Lunell) Lunell in Amer. Midl. Naturalist 1932. Alisma plantago-aquatica ssp. brevipes (Greene) Sam. in Ark. Bot. 24A(7):19 1935. Alisma plantago-aquatica var. brevipes (Greene) Vict. in Fl. Laurent.:615 Northern water-plantain Alisma commun Native Secure 4 OBL Perennial Herb-forb S5, G5 37 13 counties 13 New York State counties 61167-Alisma-triviale 13 counties 13 New York State counties 2865140 present in NY present in New York State ALTR7 N Rens,Wash,Oran,Rock,Putn (only) 65VDN 8516-2 0000755508 391 2462 Alisma/triviale Alisma_triviale Alisma triviale.jpg Alisma gramineum Lej. 1811. Alisma gramineum Lej. in Fl. Spa 1:175 1827. Alisma plantago-aquatica var. gramineum (Lej.) Dumort. in Fl. Belg.:135 1843. Alisma geyeri Torr. in I.N.Nicollet, Rep.Hydrogr.Mississippi:162 1851. Alisma plantago-aquatica var. graminifolium Lange in Haandb.Danske Fl., nom. illeg. 1903. Alisma graminifolium Glück in Beibl. Bot. Jahrb. Syst. 73:33 1957. Alisma gramineum var. angustissimum (DC.) Hendricks in Amer. Midl. Naturalist Narrow-leaved water-plantain Grass-leaved water-plantain Ribbon-leaf water-plantain Alisma graminoide Native Threatened 7 OBL Perennial Herb-forb 2n=14 S4, G5 38 2-3 Wayn-Orle-Jeff-Stla (only) present in NY present in New York State ALGR N Wayn-Orle-Jeff-Stla (only) BSFZ 77097302-1 0000755418 Alisma/gramineum Alisma_gramineum Alisma gramineum plant.jpg Helanthium Helanthium tenellum - Mutis-2.png Helanthium tenellum The species Helanthium tenellum (Mart. ex Schult.f.) J.G.Sm. (mud-babies or dwarf burhead) is not known to persist New York State, though specimens were collected from Queens County in 1921. Alismatales Alismataceae Helanthium Helanthium Burhead 1130 1 Helanthium tenellum (Mart. ex Schult.f.) Britton 1830. Alisma tenellum Mart. ex Schult.f. in J.J.Roemer & J.A.Schultes, Syst. Veg. 1833. Alisma ranunculoides var. brasiliense A.St.-Hil. in Voy. Distr. Diam. 2:432 1856. Echinodorus subulatus Engelm. in A.Gray, Manual, ed. 2:438 1856. Echinodorus parvulus Engelm. in A.Gray, Manual, ed. 2:439 1868. Echinodorus tenellus (Mart. ex Schult.f.) Buchenau in Index Crit. Butom. Alism. 1898. Sagittaria tenella (Mart. ex Schult.f.) Kuntze in Revis. Gen. Pl. 3(2): 326 1905. Helanthium tenellum (Mart. ex Schult.f.) J.G.Sm. in N.L.Britton 1909. Helanthium parvulum (Engelm.) Small in N.L.Britton & al. 1955. Echinodorus tenellus var. ecostatus Fassett in Rhodora 57:184 1955. Echinodorus tenellus var. parvulus (Engelm.) Fassett in Rhodora 57:185 1955. Echinodorus tenellus fo. randii Fassett in Rhodora 57:188 Dwarf burhead Mud-babies Pygmy chain sword Native Likely extirpated 10 OBL Perennial Herb-forb SX, G5 39 Queens (1921) Queens County (1921) 204326-Helanthium-tenellum No NY obs. No NYS observations 2864529 Not present in NY present in New York State ECTE2 NN as Echinodorus tenellus (Mart. ex Schult.f.) Buchenau helanthium/tenellum 38899 Echinodorus tenellus (Mart.) Buchenau 460430 Helanthium tenellum (Mart. ex Schult.f.) Britton 222000054 Echinodorus tenellus (Mart.) Buchenau 1868. 900111 Helanthium tenellum (Mart. ex Schult. & Schult.f.) Britton Helanthium tenellum nymap.svg Helanthium tenellum iNat-438373304.jpg Family Butomaceae Butomus ButomusUmbellatus2.jpg Butomus umbellatusflowering rush The sole species of Butomaceae (the flowering rush family) is the aquatic Eurasian plant Butomus umbellatus, which is listed as moderately invasive in New York. Its first appearance in North America was in the St. Laurence River in 1897, and it is now a problem weed in the Great Lakes.Go Botany - New England Wild Flower Society Studies by L. C. Anderson in 1974 found that the naturalized North American Butomus populations had separate sources. Those east of Niagara Falls, introduced near the St. Lawrence River, originated in eastern Asia. Those west of the Falls were introduced near Detroit, and were from western Euraasia. R. L. Stuckey, in 1994, recognized these two groups as separate species, with B. umbellatus, from western Eurasia, found west of the Falls, and B. junceus, from eastern Asia, found east of the falls.Flora of North America, www.eFloras.org B. junceus is not widely accepted as a separate species at this time, but if it were to be accepted, New York's populations would probably be considered to be B. junceus.Weldy, Troy, David Werier, and Andrew Nelson (2014) New York Flora Atlas. New York Flora Association, Albany, New York.Cao, L., L. Berent, and A. Fusaro (2014). Butomus umbellatus. USGS Nonindigenous Aquatic Species Database, Gainesville, FL. Alismatales Butomaceae Butomus Butomus Flowering rush 790 1 Butomus umbellatus L. 1753 Butomus umbellatus L. 1837 Butomus junceus Turcz. Flowering rush Water gladiolus Grass rush Butome à ombelle Jonc fleuri Introduced Eurasia northern Africa Moderately invasive NE-1NE1 2864467 64%Butomus umbellatus Moderate 64 first 649 X BUUM X 2864467 4138 butomus/umbellatus 38886 404280 200024717 4800001 58290-1 Butomus+umbellatus Butomus%20umbellatus Butomus umbellatus nymap.svg Butomus umbellatus Sturm-04007.png Family Hydrocharitaceae The Hydrocharitaceae (tape-grass family) ... Subfamily Hydrocharitoideae Hydrocharis Hydrocharis.jpg Hydrocharis morsus-ranae European frog-bit (Hydrocharis morsus-ranae) is a recent invader of northern New York State, often occurring with Phragmites australis. Alismatales Hydrocharitaceae Hydrocharitoideae HydrocharisHydrocharis Frog-bit 487 1 Hydrocharis morsus-ranae L. 1753 Hydrocharis Morsus ranae L. 1827 Pontederia dubia Blume 1925 H. dubia (Blume) Backer Common frogbit European frog-bit Frog's bit Hydrocharide grenouillette Grenouillette Morène Petit nénuphar Introduced Eurasia northern Africa Very highly invasive 86%Hydrocharis morsus-ranae Very high 86 first Prohibited 1598 X Cayu-Oswe-Wayn-Sara HYMO6 XX New York, Otario & Quebec only 6121 hydrocharis/morsus-ranae 503098 419827 220006621 16100007 114336-3 Hydrocharis+morsus-ranae Hydrocharis%20morsus-ranae Hydrocharis morsus-ranae nymap.svg Hydrocharis morsus-ranae 2017-08-06 3636.jpg Egeria Alismatales Hydrocharitaceae Hydrocharitoideae Egeria Egeria Waterweed 650 1 Egeria densa Planch. 1849 Egeria densa Planch. 1857 Elodea densa Casp. 1931 Anacharis densa Vict. 1933 Philotria densa Small Brazilian waterweed Brazilian elodea South American waterweed Introduced Brazil Highly invasive 75%Egeria densa High 75 Prohibited NE-2NE2 1601 X Oran-Nass-Suff (only) EGDE XW 6117 egeria/densa 38972 400175 220004601 16100033 Egeria densa nymap.svg Wasserpest.jpg Limnobium Limnobium spongia 02.jpg Limnobium spongia Alismatales Hydrocharitaceae Hydrocharitoideae Limnobium Limnobium Spongeplant 924 1 Rich. 1814 Limnobium spongia (Bosc) Rich. ex Steud. 1807 Hydrocharis spongia Bosc 1814 Limnobium spongia Rich. 1818 Hydrocharis cordifolia Nutt. 1840 Limnobium spongia Steud. American frogbit American spongeplant Introduced US South native Impersistent 1602 X LISP2 N0 0 38948 419810 222000213 16100044 Limnobium spongia kz01 (3x4).jpg Subfamily Stratiotoideae Stratiotes Stratiotes aloides spring.jpg Stratiotes aloides Although not yet found in New York, Stratiotes aloides (water soldiers) have been discovered on the Trent River in Ontario and the Ottawa River in Quebec.iNaturalist (2021). Stratiotes aloides (Water-Soldier)Fusaro, A., A. Davidson, K. Alame, M. Gappy, E. Baker, G. Nunez, J. Larson, W. Conard, and P. Alsip, 2021, Stratiotes aloides L.: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, and NOAA Great Lakes Aquatic Nonindigenous Species Information System, Ann Arbor, MI, Revision Date: 5/11/2017, Access Date: 9/14/2021 Alismatales Hydrocharitaceae Stratiotoideae Stratiotes Stratiotes Water-aloe 0 Stratiotes aloides L. 1753 Stratiotes aloides L. Water-soldiers Water-aloe Stratiote faux-aloès Faux-aloès Aloès d'eau Introduced Eurasia Highly invasive NYS Tier 1a Not rankedStratiotes aloides Listed but not ranked No reports outside of cultivation in New York STAL6 00 (excluded) CA 27898 60467-Stratiotes-aloides 505383 316418 16100129 0 nymap.svg no reports StratiotesAloidesFlower.jpg Subfamily Anacharidoideae Elodea Alismatales Hydrocharitaceae Anacharidoideae Elodea Elodea Waterweed 50 3 Elodea canadensis L.Rich. ex Michx. Canadian waterweed Common waterweed Broad waterweed Native Secure 1600 5 ELCA7 NN Elodea canadensis2 ies.jpg Elodea nuttallii (Planch.) St. John Nuttall's waterweed Native Secure 1599 5 ELNU2 NN ElodeaNuttallii2.jpg Elodea bifoliata H.St.John E. longivaginata H.St.John E. nevadensis (Planch.) H,St.John Twoleaf waterweed Two-leaved waterweed Long-sheath waterweed Introduced Western native 1597 X ELBI2 NN No counties NY-dist-map.png Herne - Kanal - Osthafen 06 ies.jpg Lagarosiphon Lagarosiphon major flowers on Salagou Lake cf01.jpg Lagarosiphon major flowers on Salagou Lake, France African oxygen weed or African elodea (Lagarosiphon major) is listed on the Federal Noxious Weed list and on the Michigan prohibited aquatic plant list.The Midwest Invasive Species Information Network (MISIN) (2021). African oxygen weed (Lagarosiphon major). The New York State rank is High.New York State Invasive Species Tiers: African elodea (Lagarosiphon major), Ecological Rank High, NYS Tier 1b, Capitol Region 1c, 2021 New York Natural Heritage Program. Alismatales Hydrocharitaceae Anacharidoideae Lagarosiphon Lagarosiphon Oxygen weed 0 Lagarosiphon major (Ridl.) Moss African oxygen weed African elodea Introduced Highly invasive X 0 Not Listed LAMA15 X? Excluded nymap.svg Lagarasiphon major, Howardian, August 1992 (34388714862).jpg Subfamily Hydrilloideae Najas Alismatales Hydrocharitaceae Najadoideae Najadeae Najas Najas Waternymph / Naiad 53 7 Najas flexilis (Willd.) Rostk. & W.L.E.Schmidt 1798 Caulinia flexilis Willd. 1803 Najas canadensis Michx. 1824 N. flexilis Rostk. & W.L.E.Schmidt 1942 N. flexilis caespitosus Maguire 1975 N. caespitosus (Maguire) Reveal Slender naiad Slender naias Slender water-nymph Nodding water-nymph Bushy naiad Northern water-nymph Wavy waternymph Native Secure 1927 5 NAFL NN najas/flexilis 400099 222000255 Najas+flexilis nymap.svg BB-0213 Naias flexilis.png Najas gracillima (A.Braun ex Engelm.) Magnus 1867 Najas indica var. gracillima 1870 Najas gracillima Magnus Thread-like naiad Thread-like water-nymph Slender waternymph Native Likely secure 1928 4 NAGR NN najas/gracillima nymap.svg Najas gracillima seeds.JPG Najas guadalupensis (Spreng.) Magnus guadalupensis 1825 Caulinia guadalupensis Spreng. 1870 Najas guadalupensis Magnus Southern water-nymph Southern naiad Native Secure 1930 5 NAGUG NN all US states except Alaska najas/guadalupensis 510482 400100 noxious weed in PR 222000260 22200058 Najas guadalupensis ssp guadalupensis nymap.svg BB-0214 Naias guadalupensis.png Najas guadalupensis (Spreng.) Magnus muenscheri (R.T.Clausen) R.R.Haynes & Hellq. 1937 Najas muenscheri R.T.Clausen 1979 N.g. muenscheri R.R.Haynes 1996 N.g. muenscheri R.R.Haynes & Hellq. Hudson River water-nymph Muenscher's water-nymph Mermaid weed Native Endangered 1EndemicThe Hudson River water-nymph is endemic to the lower Hudson River (from the Mohawk River to Piermont), one of the few New York endemic taxa. 9684 Najas guadalupensis ssp. muenscheri Endangered S1 G5T1 1931 1E Endangered & endemic to the Hudson River Valley. NAGUM2 N0 as Najas guadalupensis (Spreng.) Magnus ssp. muenscheri (R.T.Clausen) Haynes & C.B.Hellquist NHP not present in New England s.s. 566055 222000262 50083830 Najas guadalupensis ssp muenscheri nymap.svg Najas guadalupensis NRCS-1.jpg Najas guadalupensis (Spreng.) Magnus olivacea (Rosend. & Butters) R.R.Haynes & Hellq. 1935 N. olivacea Rosend.& Butters 1979 N. guadalupensis olivacea R.R.Haynes 1996 N. guadalupensis olivacea R.R.Haynes & Hellq. Guadalupe water-nymph Southern naiad Native Endangered 1932 1 NAGUO2 NN najas/guadalupensis 222000261 50083828 Najas guadalupensis ssp olivacea nymap.svg Najas guadalupensis NRCS-4x3.jpg Najas marina L. 1753 Najas marina L. 1893 Najas gracilis Morong 1903 Najas gracilis Small Spiny water-nymph Spiny naiad Holly-leaved naiad Prickly waternymph Native Endangered 1926 1 NAMA NN not listed 400101 200024705 22200006 Najas marina nymap.svg JCS Najas marina 01544.jpg Najas minor Carlo Allioni All. 1773 Najas minor All. 1807 Fluvialis minor Pers. 1808 Ittnera minor C.C.Gmel. 1845 Caulinia minor Coss. & Germ. Brittle water-nymph Introduced Eurasia n. Africa Moderately invasive NYS Tier 5New York State Invasive Species Tiers: Najas minor (brittle naiad) - NYS Tier 5 Najas minor is prohibited in Connecticut, Maine, Massachusetts, and New Hampshire. 2021 Native Plant Trust, Go Botany. 1929 X NAMI XX najas/minor 416233 200024706 22200005 Najas minor nymap.svg Najas minor NRCS (3x4).jpg Hydrilla Hydrilla verticillata-1-bsi-yercaud-salem-India.jpg Hydrilla verticillata The genus Hydrilla is usually considered to contain the single species Hydrilla verticillata, which is commonly known simply as hydrilla. It's a Eurasian aquatic plant commonly used in aquariums and was probably first released in North America in the 1950s but not found in New York State until 2008, when it was discovered in Orange and Suffolk Counties.New York State Department of Environmental Conservation (2021). "Hydrilla."New York State Department of Environmental Conservation (2020). Hydrilla Fact Sheet. More recently, hydrilla has been discovered in and around Cayuga Lake, Tonawanda Creek near Buffalo, Susquehanna River near Binghamton and elsewhere. By 2021, iMapInvasives showed hydrilla in at least 12 New York counties.New York State Invasive Species Tiers: Hydrilla verticillata. 2021 New York Natural Heritage Program. Alismatales Hydrocharitaceae Najadoideae Najadeae Hydrilla Hydrilla Water-thyme 1114 1 Hydrilla verticillata (L.f.) John Forbes Royle Royle 1782 Serpicula verticillata L.f. 1824 Udora verticillata Spreng. 1839 Hydrilla verticillata Royle 1888 Elodea verticillata F.Muell. Hydrilla Florida elodea Waterthyme Water-thyme Esthwaite waterweed Introduced Eurasia, Africa Australia Very highly invasive 91%Hydrilla verticillata Very high 91 NYS Tier 2New York State Invasive Species Tiers: Hydrilla verticillata. 2021 New York Natural Heritage Program. Discovered 2008.Three large infestations of Hydrilla were discovered in Orange and Suffolk Counties in 2008. X 7179 X1 Oran-Nass HYVE3 X0 not listed in Canada hydrilla/verticillata 38974 316414 200024721 16100005 Hydrilla verticillata nymap.svg NYFA: Orange, WestchesteriMap: ≥ 12 counties Hydrilla verticillata kz01 01.jpg Vallisneria Alismatales Hydrocharitaceae Najadoideae Vallisnerieae Vallisneria Eelgrass 652 1 Vallisneria americana Michx. Eel-grass Tape-grass Water-celery Wild-celery Native Secure 1596 5 VAAM3 NN Vallisneria americana UMFS 2.JPG Family Scheuchzeriaceae The Monotypic taxon monotypic Scheuchzeriaceae (scheuchzeria family) Scheuchzeria Alismatales Scheuchzeriaceae Scheuchzeria Scheuchzeria Rannoch-rush 236 1 Scheuchzeria palustris L. S. americana (Fernald) G.N.Jones S. palustris americana Fernald American scheuchzeria Rannoch-rush Native Vulnerable 2905 3 SCPA2 NN Scheuchzeria/palustris ScheuchzeriaPalustris2.jpg Family Juncaginaceae The Juncaginaceae (arrowgrass family) Triglochin Alismatales Juncaginaceae Triglochin Triglochin Arrowgrass 895 2 Triglochin maritima L. Seaside arrowgrass Native Likely secure 1677 4 TRMA20 NN Triglochin maritima baie-authie 80 29042007 6.jpg Triglochin palustris L. Slender bog arrow-grass Native Threatened 1676 2 TRPA28 NN Triglochin palustris 02.jpg Family Ruppiaceae The Ruppiaceae (ditch-grass family) Ruppia Starr 040410-0254 Ruppia maritima.jpg Ruppia maritimaditch-grass Alismatales Ruppiaceae Ruppia Ruppia Widgeonweed 40 1 Ruppia maritima L. 1753 Ruppia maritima L. 1915 Buccaferrea maritima Lunell Ditch-grass Beaked ditchgrass Widgeongrass Sea ditchgrass Tassel pondweed Ruppie maritime Persil d'eau Native Vulnerable OBL Perennial Herb-forb 2843 3-4 RUMA5 NN 9037 ruppia/maritima 39063 220011791 26300130 Ruppia+maritima Ruppia%20maritima nymap.svg Ruppia maritima South Chungcheong, South Korea 27 Jun 2006.jpg Family Zosteraceae The Zosteraceae (eelgrass family) Zostera Alismatales Zosteraceae Zostera Zostera Eelgrass 651 1 Zostera marina L. (1753) Zostera pacifica L. Eelgrass Seawrack Zostére marine Native Vulnerable 3133 3 Long Island only ZOMA NN 39074 200024703 Zostera marina.jpeg Family Potamogetonaceae The Potamogetonaceae (pond-weed family) Tribe Potamogetoneae Potamogeton The Potamogeton (pondweed) subdivisions used here are from Lindqvist et al. (2006).Lindqvist, C., De Laet, J., Haynes, R. R., Aagesen, L., Keener, B. R. and Albert, V. A. (2006), Molecular phylogenetics of an aquatic plant lineage, Potamogetonaceae. Cladistics, 22: 568–588. doi: 10.1111/j.1096-0031.2006.00124.x Chromosome numbers are from Kaplan et al. (2013).Zdeněk Kaplan, Vlasta Jarolímová & Judith Fehrer (2013). "Revision of chromosome numbers of Potamogetonaceae: a new basis for taxonomic and evolutionary implications." Preslia 85:421–482, 2013. Potamogeton clade 1A Potamogeton crispus 5274005.jpg Potamogeton crispuscurly-leaved pondweed Alismatales Potamogetonaceae Potamogeton 1A Potamogeton Pondweed 266 32 1A Potamogeton robbinsii Oakes --- Robbins' pondweed Flat-leaved pondweed Fern pondweed --- Potamot de Robbins Native Secure 2n = 52 2508 5 PORO2 NN potamogeton/robbinsii 222000307 nymap.svg Potamogeton robbinsii NRCS-002.jpg Potamogeton crispus L. 1753 Potamogeton crispus L. --- Curly pondweed Curled pondweed --- Potamot crepu Introduced Eurasia northern Africa Australia Very highly invasive NE-1NE1 NoteThe exotic invasive Potamogeton crispus is easily recognized by being the only species in North America with serrate leaves (Flora of North America). 2n = 52 80%Potamogeton crispus Very high 80 2490 X Onon-Cayu-Oswe-Tomp-Madi+M POCR3 XX potamogeton/crispus 400123 200024690 Potamogeton crispus Thomé-033.png Potamogeton clade 1B 20180810Potamogeton natans2.jpg Potamogeton natans Alismatales Potamogetonaceae Potamogeton 1B Potamogeton Pondweed 266 32 1B Potamogeton natans L. Floating pondweed Floating-leaved pondweed Native Secure 4 OBL Perennial Herb-forb 2n = 52 2495 5 PONA4 NN potamogeton/natans nymap.svg Leipzig - Mendelssohnufer + Pleißemühlgraben 04 ies (cropped).jpg Potamogeton nodosus Poir. 1816 Potamogeton nodosus Poir. 1848 P. lonchites Tuck. 1893 P. americanus Cham. & Schltdl. novaeboracensis (Morong) A. Benn. ex Fassett 1893 P. lonchites Tuck. novaeboracensis Morong Long-leaved pondweed --- Native Secure 4 OBL Perennial Herb-forb 2n = 52 2494 5 PONO2 NN potamogeton/nodosus Limni Preveli 07 (cropped).JPG Potamogeton perfoliatus L. 1753 P. perfoliatus L. Claspingleaf pondweed Clasping-leaved pondweed Clasped pondweed Perfoliate pondweed Potamot perfolié Native Secure 5 OBL Perennial Herb-forb 2n = 52 2513 5 POPE7 NN potamogeton/perfoliatus 417554 200024699 nymap.svg PotamogetonPerfoliatus2.jpg Potamogeton richardsonii (A.Benn.) Rydb. 1889 P. perfoliatus L. richardsonii A.Benn. 1905 P. richardsonii Rydb. 1941 P. perfoliatus L. richardsonii Hultén Richardson's pondweed Native Secure 6 OBL Perennial Herb-forb 2n = 52 2515 5 PORI2 NN potamogeton/richardsonii 222000306 nymap.svg Potamogeton richardsonii.jpg Potamogeton amplifolius Tuck. (1848) Largeleaf pondweed Large-leaved pondweed Broad-leaved pondweed Potamot à grandes feuilles Native Secure 7 OBL Perennial Herb-forb 2n = 52 2512 5 POAM5 NN 8291 potamogeton/amplifolius 222000277 Potamogeton amplifolius NRCS-3.jpg Potamogeton oakesianus J.W.Robbins Oakes' pondweed --- Native Secure 7 OBL Perennial Herb-forb Chro. # unk. 2521 5 POOA NN potamogeton/oakesianus 222000295 BB-0175 Potamogeton oakesianus.png Potamogeton praelongus Wulfen Whitestem pondweed White-stemmed pondweed --- Potamot à longs pédoncules Native Secure 7 OBL Perennial Herb-forb 2n = 52 2520 5 POPR5 NN potamogeton/praelongus 222000300 nymap.svg Potamogeton praelongus bluete.jpeg Potamogeton gramineus L. Grassy pondweed --- Native Secure 7 OBL Perennial Herb-forb n = 26 2503 5 POGR8 NN potamogeton/gramineus nymap.svg Potamogeton gramineus (3817604665).jpg Potamogeton illinoensis Illinois pondweed --- Native Secure 7 OBL Perennial Herb-forb 2n = 104 2496 5 POIL NN potamogeton/illinoensis BB-0184 Potamogeton illinoensis.png Potamogeton × spathuliformis (J.W. Robbins) Morong (pro sp.) Potamogeton gramineus Potamogeton illinoensis Hybrid pondweed --- Native Vulnerable OBL Perennial Herb-forb 2n = 78 2523 3? POSP4 NN nymap.svg Ny hybrid.svg Potamogeton × nitens Potamogeton gramineus Potamogeton perfoliatus Hybrid pondweed --- Native Vulnerable OBL ? Herb-forb 2n = 52 2492 3? PONI5 NN nymap.svg Ny hybrid.svg Potamogeton × subdentatus Hagstr. Potamogeton illinoensis Potamogeton perfoliatus Hybrid pondweed --- Native Unranked OBL ? Herb-forb 2504 U POSU11 N0 NY, AL, FL only nymap.svg Ny hybrid.svg Potamogeton alpinus Balbis 1804 Potamogeton alpinus Balbis Alpine pondweed Northern pondweed Red pondweed --- Native Threatened 9 OBL Perennial Herb-forb 2n = 52 2510 2 POAL8 NN potamogeton/alpinus 222000276 nymap.svg Potamogeton alpinus out of watet.jpg Potamogeton pulcher Tuck. Spotted pondweed --- Native Threatened 10 OBL Perennial Herb-forb chr. # unk. 2511 2 POPU6 NN potamogeton/pulcher nymap.svg BB-0177 Potamogeton pulcher.png Potamogeton Pondweed 266 X 1B (excluded species) Potamogeton lucens Shining pondweed Introduced Eurasia northern Africa Excluded OBL 2n = 52 X 156 EXCLUDED nymap.svg Potamogeton lucens Prague 2012 4.jpg Potamogeton × angustifolius Potamogeton gramineus Potamogeton lucens Long-leaved pondweed Introduced Eurasia northern Africa Excluded OBL 2n = 52 X 155 EXCLUDED nymap.svg Ny hybrid.svg Potamogeton clade 2A Alismatales Potamogetonaceae Potamogeton 2A Potamogeton Pondweed 266 32 2A Potamogeton epihydrus Raf. 1808 Potamogeton epihydrus Raf. 1827 P. nuttallii Cham. & Schltdl. 1894 P. nuttallii Cham. & Schltdl. ramosus Peck 1924 P. epihydrus Raf. ramosus (Peck) House 1932 P. epihydrus Raf. typicus (Raf.) Fernald nom. inval. 1932 P. epihydrus Raf. nuttallii (Cham. & Schltdl.) Fernald 1965 P. epihydrus Raf. nuttallii (Cham. & Schltdl.) Calder & Roy L.Taylor Ribbon-leaved pondweed Nuttall's pondweed Native Secure 6 OBL Perennial Herb-forb 2n = 26 2507 5 POEP2 NN potamogeton/epihydrus 222000283 26300087 nymap.svg Potamogeton epihydrus NRCS-1.jpg Potamogeton clade 2B Alismatales Potamogetonaceae Potamogeton 2B Potamogeton Pondweed 266 32 2B Potamogeton spirillus Tuck. 1817 P. dimorphus Raf. 1848 P. spirillus Tuck. Spiral pondweed Northern snailseed pondweed --- Potamot spirille Native Secure 7 OBL Perennial Herb-forb 2n = 28 2524 5 POSP3 NN 8320 potamogeton/spirillus 222000308 26300119 nymap.svg Potamogeton spirillus (as Potamogeton dimorphus) BB-1913.png Potamogeton bicupulatus Fernald 1893 P. diversifolius trichophyllus Morong 1932 P. bicupulatus Fernald Snailseed pondweed Snail-seeded pondweed --- Native Secure 8 OBL Perennial Herb-forb 2493 5 POBI9 NN 8292 potamogeton/bicupulatus 222000278 26300082 Potamogeton bicupulatus, NH, USA.jpg Potamogeton confervoides Rchb. 1845 P. confervoides Rchb. P. tuckermanii --- Algae-like pondweed Alga pondweed Tuckerman’s pondweed --- Potamot confervoïde Native Threatened 9 OBL Perennial Herb-forb 2501 3 POCO12 NN 8293 potamogeton/confervoides BB-0190 Potamogeton confervoides.png Potamogeton diversifolius Raf. (1808) P. capillaceus Poir. P. dimorphus Raf. --- Water-thread pondweed --- Native Endangered 10 OBL Perennial Herb-forb 2n = 28 2491 1 Native, especially vulnerable in New York State. PODI N0 Most of US lower 48, not shown in Canada potamogeton/diversifolius 222000282 nymap.svg Potamogeton diversifolius NRCS-1.jpg Potamogeton clade 2C Alismatales Potamogetonaceae Potamogeton 2C Potamogeton Pondweed 266 32 2C Potamogeton foliosus Raf. foliosus Leafy pondweed --- Native Secure 2506 5 POFOF4 NN potamogeton/foliosus nymap.svg Potamogeton foliosus NRCS-1 (2x3).jpg Potamogeton pusillus L. Small pondweed --- Native Secure 2502 5 POPUP5 NN potamogeton/pusillus nymap.svg BB-0200 Potamogeton pusillus.png Potamogeton berchtoldii Fieber Potamogeton berchtoldii Fieber Potamogeton pusillus L. tenuissimus Mert. & W.D.J.Koch Potamogeton pusillus L. tenuissimus (Mert. & W.D.J.Koch) Haynes & C.B.Hellquist Berchtold’s pondweed --- Native Secure 2 Herb-forb 2497 5 potamogeton/berchtoldii nymap.svg Potamogeton berchtoldii fruit (02).JPG Potamogeton vaseyi J.W.Robbins 1867 Potamogeton vaseyi J.W.Robbins Vasey's pondweed --- Native Secure 2509 5 POVA3 NN potamogeton/vaseyi 222000312 nymap.svg BB-0198 Potamogeton vaseyi.png Potamogeton zosteriformis Fernald auct Potamogeton compressus non L. Flat-stemmed pondweed Flatstem pondweed --- Native Secure 2518 5 POZO NN potamogeton/zosteriformis nymap.svg Potamogeton zosteriformis NRCS-1.jpg Potamogeton friesii Fries' pondweed --- Native Likely secure 2505 4? POFR3 NN potamogeton/friesii nymap.svg Potamogeton friesii.jpeg Potamogeton obtusifolius Mert. & W.D.J. Koch Blunt-leaved pondweed --- Native Likely secure 2517 4 POOB2 NN potamogeton/obtusifolius nymap.svg Potamogeton obtusifolius sl25.jpg Potamogeton hillii Morong Hill's pondweed --- Native Threatened 2499 2 POHI4 NN potamogeton/hillii nymap.svg BB-0193 Potamogeton hillii.png Potamogeton ogdenii Hellquist & Hilton Ogden's pondweed --- Native Endangered 2514 1 POOG NN potamogeton/ogdenii nymap.svg Potamogeton strictifolius Benn. auct P. rutilus Wolfg. Straight-leaved pondweed Narrowleaf pondweed --- Native Endangered 2516 1 POST2 NN potamogeton/strictifolius nymap.svg Potamogeton × haynesii Hellquist & Crow Potamogeton strictifolius Potamogeton zosteriformis Hybrid pondweed --- Native Endangered 2522 1? POHA11 NN nymap.svg Potamogeton Pondweed 266 X 2C (excluded species) Potamogeton compressus 1753 P. compressus L. Grass-wrack pondweed Flatstem pondweed Eelgrass pondweed Introduced Eurasia Excluded X 157 EXCLUDED 308518 nymap.svg Potamogeton compressus.jpeg Potamogeton rutilus Wolfg. 1827 P. rutilus Wolfg. Shetland pondweed Introduced Eurasia Excluded X 158 EXCLUDED 308710 nymap.svg BB-0197 Potamogeton rutilus.png Stuckenia Alismatales Potamogetonaceae Stuckenia Stuckenia Pondweed 267 2 Stuckenia pectinata (L.) Börner Potamogeton pectinatus L. Stuckenia pectinata (L.) Börner Coleogeton pectinatum (L.) Les & R.R.Haynes Sago pondweed Native Secure 2 2500 5 Shallow water of ponds, lakes and slow moving streams. STPE15 NN nymap.svg La marque juillet 2017a5.jpg Stuckenia filiformis (Pers.) Börner Thread-leaved pondweed Fineleaf pondweed Native Endangered 2498 1 STFIA2 NN as ssp. alpina nymap.svg Stuckenia filiformis ssp filiformis NRCS-1.jpg Stuckenia Pondweed 267 X (excluded species) Stuckenia vaginata (Turcz.) Holub 1854 Potamogeton vaginatus Turcz. 1984 Stuckenia vaginata (Turcz.) Holub Sheathed pondweed Big sheathed pondweed Large sheathed pondweed Potamot engainé N. America native Endangered X 159 STVA8 NN 222000379 nymap.svg Stuckenia vaginata.jpg Tribe Zannichellieae Zannichellia Alismatales Potamogetonaceae Zannichellia Zannichellia Horned pondweed 3132 1 Zannichellia palustris L. 1753 Zannichellia palustris L. --- Horned pondweed --- Native Secure 3132 5 ZAPA NN 8344 zannichellia/palustris 39068 200024702 ZannichelliaPalustris3.jpg