Dysphania anthelmintica |
Dysphania pumilio |
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wormseed |
Australian goosefoot, clammy glandular-goosefoot, clammy goosefoot, small crumbweed, Tasmanian goosefoot |
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Habit | Plants annual. | |
Stems | erect to ascending, branched, 3.7–7.5(–10) dm, ± glandular-pubescent, puberulent, or glabrate. |
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, distal leaves sessile; petiole 1.4 mm; blade narrowly ovate to lanceolate, 5–7 × 1.5–3 cm, base cuneate, margins dentate with large, widely spaced teeth, apex acute, gland-dotted (rarely nearly glabrous). |
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 | terminal and lateral spikes or panicles, 3–8 cm; glomerules globose, 2.5–3.3 mm diam.; bracts absent or leaflike, linear, to 2.2 mm, apex acute. |
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, connate for ca. 1/2 their length, distinct portion ovate, 0.7 mm, apex obtuse, rounded abaxially, glabrous, covering fruit at maturity; stamens 5; stigmas 3. |
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 nonadherent, smooth, glandular. |
ovoid; pericarp adherent, membranaceous, slightly rugose. |
Seeds | horizontal or vertical, reddish brown, ovoid, 0.6–0.8 × 0.8–1 mm; seed coat smooth. |
reddish brown, ovoid, 0.5–0.7 × 0.5–0.6 mm, margins keeled or rounded; seed coat smooth. |
Dysphania anthelmintica |
Dysphania pumilio |
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Phenology | Fruiting summer–fall. | Fruiting late summer–fall. |
Habitat | Sand dunes, pinelands, meadows, roadsides, and other waste areas | Waste areas on rocky, sandy, or gravelly soils, sidewalks, rare in moist soils in forests |
Elevation | 0-1100 m (0-3600 ft) | 0-1200 m (0-3900 ft) |
Distribution |
AL; AR; CA; DE; FL; GA; IL; IN; KS; KY; LA; MA; MD; MO; MS; NC; NJ; NY; OH; OK; PA; SC; TX; VA; WV; Mexico; Central America; West Indies; Bermuda |
AR; CA; CT; DC; FL; GA; IL; KS; KY; LA; MA; MO; NJ; NV; NY; OH; OK; OR; PA; RI; SC; TN; TX; VA; WA; WI; Australia [Introduced in North America; introduced in subtropical and warm-temperate regions]
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Discussion | Dysphania anthelmintica is cultivated and locally naturalized elsewhere in the world. It is reported to not have leaves (pseudobracts) subtending the glomerules. In fact, it usually has very reduced leaflike bracts that are never longer than the glomerules. This species appears to be the most common representative along the Atlantic and Gulf coasts and is probably native to that region. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
This species has gone under the misapplied name Chenopodium carinatum R. Brown (now 9. Dysphania carinata). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 4, p. 270. | FNA vol. 4, p. 274. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Chenopodium anthelminticum, Chenopodium ambrosioides var. anthelminticum | Chenopodium pumilio, Teloxys pumilio |
Name authority | (Linnaeus) Mosyakin & Clemants: Ukrayins’k. Bot. Zhur n., n. s. 59: 382. (2002) | (R. Brown) Mosyakin & Clemants: Ukrayins’k. Bot. Zhurn., n. s. 59: 382. (2002) |
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