Tasmanian goosefoot, more...
[Chenopodium carinatum R. Br., more]
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).
Annual; stems spreading or prostrate, 2-4 dm; lvs densely beset with large yellow glands beneath, oblong or lanceolate, 1-3 cm with 2-4 coarse teeth per side; glomerules small, aggregated into small axillary spikes to 10 mm; cal deeply 5 cleft, beset with large yellow glands; seeds erect, 0.5-0.6 mm wide, lenticular with a raised margin; 2n=16. Native of Australia, naturalized in waste places in our range. (C. carinatum)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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