Dysphania pumilio

(R. Brown) Mosyakin & Clemants

Ukrayins’k. Bot. Zhurn., n. s. 59: 382. 2002.

Common names: Clammy goosefoot small crumbweed
Basionym: Chenopodium pumilio R. Brown Prodr., 407. 1810
Synonyms: Teloxys pumilio (R. Brown) W. A. Weber
Treatment appears in FNA Volume 4. Treatment on page 274. Mentioned on page 268, 271.

Stems prostrate to suberect, much-branched to ± simple, 0.1–4.5 dm, pilose with segmented (uniseriate) hairs and sessile or stipitate glandular hairs. Leaves malodorous; petiole 0.3–1.5 cm; blade narrowly to broadly elliptic to ovate, 0.5–2.7 × 0.3–1.5 cm, somewhat reduced in inflorescence, base cuneate, apex obtuse, glandular-pilose. Inflorescences lateral cymes or glomerules; glomerules subglobose, 1.2–2.5 mm diam.; bracts leaflike, 3–4.5 mm, elliptic, margins crenate-dentate, apex obtuse. Flowers: perianth segments 5, distinct nearly to base, distinct portions narrowly elliptic to narrowly oblong, 0.6–0.7 × 0.2–0.3 mm, apex acute, normally rounded abaxially, usually glandular-pilosulose, becoming crustaceous and white in fruit; stamens absent or 1; stigmas 2. Achenes ovoid; pericarp adherent, membranaceous, slightly rugose. Seeds reddish brown, ovoid, 0.5–0.7 × 0.5–0.6 mm, margins keeled or rounded; seed coat smooth.

Phenology: Fruiting late summer–fall.
Habitat: Waste areas on rocky, sandy, or gravelly soils, sidewalks, rare in moist soils in forests
Elevation: 0-1200 m


V4 502-distribution-map.gif

Introduced; Ark., Calif., Conn., D.C., Fla., Ga., Ill., Kans., Ky., La., Mass., Mo., Nev., N.J., N.Y., Ohio, Okla., Oreg., Pa., R.I., S.C., Tenn., Tex., Va., Wash., Wis., Australia, introduced in subtropical and warm-temperate regions.


This species has gone under the misapplied name Chenopodium carinatum R. Brown (now 9. Dysphania carinata).

Selected References


Lower Taxa

... more about "Dysphania pumilio"
Steven E. Clemants +  and Sergei L. Mosyakin +
(R. Brown) Mosyakin & Clemants +
Chenopodium pumilio +
Clammy goosefoot +  and small crumbweed +
Ark. +, Calif. +, Conn. +, D.C. +, Fla. +, Ga. +, Ill. +, Kans. +, Ky. +, La. +, Mass. +, Mo. +, Nev. +, N.J. +, N.Y. +, Ohio +, Okla. +, Oreg. +, Pa. +, R.I. +, S.C. +, Tenn. +, Tex. +, Va. +, Wash. +, Wis. +, Australia +  and introduced in subtropical and warm-temperate regions. +
0-1200 m +
Waste areas on rocky, sandy, or gravelly soils, sidewalks, rare in moist soils in forests +
Fruiting late summer–fall. +
Ukrayins’k. Bot. Zhurn., n. s. +
Introduced +  and Illustrated +
Teloxys pumilio +
Dysphania pumilio +
Dysphania sect. Orthospora +
species +