Jepson eFlora
Key to families | Table of families and genera

Key to Urtica

View taxon page for Urtica

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

1. Annual 1–6(8) dm; leaf blade 18–40(90) mm; inflorescence generally ± head- or spike-like, often < petiole, of staminate and pistillate flowers; fruit deltate ..... U. urens

1' Perennial herb 5–30 dm; leaf blade 60–200 mm; inflorescence raceme- or panicle-like, generally > petiole, of staminate or pistillate flowers; fruit ovate ..... U. dioica

2. Non-stinging hairs on stem, leaf 0 to ± dense, occasionally > 1 mm, those on abaxial veins appressed; stem green ..... subsp. gracilis

2' Non-stinging hairs on stem, leaf dense, < 1 mm, those on abaxial veins erect; stem gray-green ..... subsp. holosericea

Contact/Feedback

Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [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].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.