Urtica thunbergiana, Siebold & Zuccarini, 1846
publication ID |
https://doi.org/ 10.11646/phytotaxa.323.3.1 |
persistent identifier |
https://treatment.plazi.org/id/11068786-BD44-FFBB-B5A2-F88DFA218724 |
treatment provided by |
Felipe |
scientific name |
Urtica thunbergiana |
status |
|
Key to the subspecies of Urtica thunbergiana View in CoL
1. Leaf margin regularly dentate.............................................................................................................................................................2
- Leaf margin doubly dentate, usually each large tooth with one small tooth on each side (one or both of the small teeth may be missing on some teeth).......................................................................................................................................................................4
2. Teeth rounded, 2–5 mm long..................................................................................................... Urtica thunbergiana subsp. silvatica View in CoL
- Teeth pointed, 2–15 mm long.............................................................................................................................................................3
3. Teeth simple, widely triangular; leaf base rounded to cordate; occasionally basal leaves nearly as long as broad with a cordate base and the apical leaves nearly three times longer than broad with a rounded to attenuate base (heteroblastic) ..................................... ..................................................................................................................................................... Urtica thunbergiana subsp. dentata View in CoL
- Teeth oblong, leaf base rounded, cordate or attenuate; leaves lobulate with lobules with one small tooth, ca. 1 mm long, on each side (the small teeth may be missing); not or weakly heteroblastic.................................. Urtica thunbergiana subsp. thunbergiana View in CoL
4. Plant sparsely covered with stinging hairs, stinging hairs 1–3 mm long; basal leaves broadly ovate with cordate base .................... ........................................................................................................................................... Urtica thunbergiana subsp. thunbergiana View in CoL
- Plant densely covered with stinging hairs, stinging hairs up to 4 mm long; all leaves ovate .............................................................. ................................................................................................................................................ Urtica thunbergiana subsp. perserrata View in CoL
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