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FNA | Family List | FNA Vol. 4 | Chenopodiaceae | Dysphania

8. Dysphania pumilio (R. Brown) Mosyakin & Clemants, Ukrayins’k. Bot. Zhurn., n. s. 59: 382. 2002.

Clammy goosefoot, small crumbweed

Chenopodium pumilio R. Brown, Prodr., 407. 1810; Teloxys pumilio (R. Brown) W. A. Weber

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.

Fruiting late summer-fall. Waste areas on rocky, sandy, or gravelly soils, sidewalks, rare in moist soils in forests; 0-1200 m; 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).


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