Jepson eFlora
Key to families | Table of families and genera

Key to Xanthium

View taxon page for Xanthium

(For a list of species in Xanthium, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Nodal spines present, generally 3-lobed, 15–30+ mm, golden; leaf blade ± lanceolate to ovate or lance-linear, abaxially densely strigose, gray to white ..... X. spinosum

1' Nodal spines 0; leaf blade nearly round to ± pentagonal or deltate, abaxially minutely coarse-hairy, green ..... X. strumarium


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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