Flora of North America species comparison

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Dysphania carinata

keel wormseed
Stems

erect to ascending, branched, 3–5.5 dm, pilose with glandular trichomes or sessile glands.
Leaves

aromatic;

petiole 0.5–1.4 cm;

blade ovate to broadly ovate, 0.9–1.6 × 0.8–1.4 cm, somewhat reduced in inflorescence, base cuneate to truncate, apex acute, glandular-puberulose and pilosulose on veins.
Inflorescences

axillary glomerules;

glomerules subglobose, 1.5–2.5 mm diam.;

bracts leaflike, ovate, 3–5 mm, margins crenate-dentate, apex acute.
Flowers

perianth segments 5, distinct nearly to base, distinct portions narrow-oblong, prominently keeled especially apically, 0.8–0.9 × 0.3–0.4 mm, apex acute, not crested, covered with septate hairs, becoming coriaceous and white in fruit;

stamens absent or 1;

stigmas 2.
Achenes

ovoid;

pericarp adherent, membranaceous, slightly rugose.
Seeds

reddish brown, ovoid, 0.6 × 0.3–0.4 mm, margins keeled over radicle and channeled over cotyledons;

seed coat smooth.

Dysphania carinata
Phenology Fruiting fall.
Habitat Waste areas on roadsides, sandy soils
Elevation 10-100 m (0-300 ft)
Distribution
from FNA
AL; AR; TX; native to Australia [Introduced in North America]
[BONAP county map]
Source FNA vol. 4, p. 274.
Parent taxa Chenopodiaceae > Dysphania > sect. Orthospora
Sibling taxa
D. ambrosioides, D. anthelmintica, D. aristata, D. botrys, D. chilensis, D. cristata, D. graveolens, D. multifida, D. pumilio
Synonyms Chenopodium carinatum
Name authority (R. Brown) Mosyakin & Clemants: Ukrayins’k. Bot. Zhurn., n. s. 59: 382. (2002)
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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