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Published In: Species Plantarum 1: 219. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 8/11/2017)
Acceptance : Accepted
Project Data     (Last Modified On 7/9/2009)
Status: Introduced

 

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12. Chenopodium murale L. (nettle-leaved goosefoot)

Pl. 355 c–e; Map 1532

Plants annual, without an odor. Stems 10–80 cm long, erect or ascending, few- to much-branched above the base, glabrous or sparsely white-mealy, green to pale green. Leaves mostly long-petiolate. Leaf blades 2–5(–8) cm long, mostly 2.0–2.5 times as long as wide (1–3 cm wide), ovate to ovate-triangular or occasionally rhombic, bluntly to sharply pointed at the tip, broadly angled, truncate or shallowly cordate at the base, green, relatively thin and herbaceous in texture, the margins irregularly several-toothed, the upper surface glabrous or sparsely white-mealy, the undersurface sparsely to moderately white-mealy. Venation noticeably branched, with 1 or 3 main veins. Inflorescences axillary and terminal, consisting of short spikes with small clusters of flowers, these usually grouped into small to relatively large panicles. Flowers not all maturing at the same time. Calyx 5-lobed to below the midpoint, extending past the widest part of the fruit but not reaching the stylar area, leaving much of the portion of the fruit above the rim exposed at maturity, the lobes 0.5–0.8 mm long, ovate, rounded or bluntly pointed at the tip, keeled (often narrowly so) dorsally, glabrous or sparsely white-mealy. Stamens 5. Stigmas 2. Fruits 1.1–1.5 mm wide, depressed-ovoid, the seeds positioned horizontally, the wall thin, membranous, and somewhat translucent, finely wrinkled or roughened at maturity, but occasionally becoming smooth with age, difficult to separate from the seed. Seeds black, dull, finely wrinkled or roughened at maturity, sharply angled along the rim. 2n=18. June–November.

Introduced, uncommon and sporadic in Missouri (native of Europe, Asia; introduced widely in the U.S. and Canada). Banks of rivers; also pastures, gardens, railroads, and open, disturbed areas.

 


 

 
 
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