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Flora of New York/GCG-21
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Global Carex Group: Roalson EH, Jiménez-Mejías P, et al (2021) A framework infrageneric classification of Carex (Cyperaceae) and its organizing principles. Journal of Systematics and Evolution 59:726–762. Main Article - Appendix