Flora of North America species comparison

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Urtica chamaedryoides

heartleaf nettle, slim stingingnettle
Habit Herbs, annual, with taproot, 1.5-8 dm.
Stems

usually branched from base, erect or reclining.
Leaf

blades narrowly ovate to orbiculate, distal blades sometimes lanceolate, 2-8 × 1-6 cm, base nearly cordate to rounded, sometimes cuneate in distal leaves, margins serrate, apex rounded to acute;

cystoliths rounded or ± elongate.
Inflorescences

± globose cymes.
Flowers

unisexual, staminate and pistillate intermixed in same inflorescence, sessile to short-pedunculate.
Pistillate flowers

outer tepals linear, 0.4-0.8 mm, inner tepals ovate, 1.4-2 × 1-1.4 mm.
Achenes

ovoid to broadly ellipsoid, 1.2-1.4(-1.6) × 0.8-1 mm.
2n

= 26.

Urtica chamaedryoides
Phenology Flowering all year except early winter.
Habitat Rich, wooded slopes, bluffs, stream banks, swamps, waste places, and fields, often on limestone or nearly neutral soils
Elevation 0-600 m (0-2000 ft)
Distribution
from FNA
AL; AR; FL; GA; IL; KS; KY; LA; MO; MS; NC; OH; OK; SC; TN; TX; n Mexico
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 3.
Parent taxa Urticaceae > Urtica
Sibling taxa
U. dioica, U. gracilenta, U. urens
Synonyms U. chamaedryoides var. runyonii
Name authority Pursh: Fl. Amer. Sept. 1: 113. (1814)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

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