411 REFERENCE · Wiktionary
Bien.
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
Appendix:Variations of "bien"
Translingual
Proper noun
A botanical plant name author abbreviation for botanist Theophil Bienert (-1873).
Further reading
Author query of the International Plant Names Index
mul Botanical author abbreviations