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Black Willow
Salix nigra

This species is native to eastern North America. Considered to be the largest species of North American willow, trees can grow up to 45 m in height and the trunks are covered in dark brown to black fissured bark. In 1829, the natural glucoside salicin, the basic ingredient of aspirin, was isolated from this species, although today salicylic acid is synthesized chemically rather than extracted from willows.

Habitat:River and stream banks, lakeshores, bottomlands.
Growth Habit:Deciduous tree, growing 12-25 m tall or more.
Bloom Time:Early spring.
Longevity:Short-lived.
Presence in US:AL AR CO CT DC DE FL GA IA IL IN KS KY LA MA MD ME MI MN MO MS NC NE NH NJ NY OH OK PA RI SC TN TX VA VT WI WV
Presence in Canada:MB NB ON QC
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This project was supported in part by NSF Grant IIS-03-25867 (ITR: An Electronic Field Guide: Plant Exploration and Discovery in the 21st Century) and by the Washington Biologists' Field Club.
Any opinions, findings, conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the official views, opinions, or policy of the National Science Foundation (NSF).