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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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4. Chenopodium botrys L. (Jerusalem oak, feather geranium)

Dysphania botrys (L.) Mosyakin & Clemants

Pl. 353 o, p; Map 1524

Plants annual, with a slight unpleasant odor. Stems 10–60 cm long, erect or ascending, few- to more commonly much-branched, with dense, short glandular hairs, usually not reddish-tinged or reddish-striped. Leaves sessile (uppermost) to long-petiolate (lowermost). Leaf blades 0.5–4.0 cm long (the lowermost rarely to 8 cm long), those of well-developed leaves mostly 1.5–3.0 times as long as wide, oblong, lanceolate, or ovate, mostly bluntly pointed at the tip, rounded or angled to truncate at the base, entire or with few to several rounded lobes, green and herbaceous in texture, the margins usually also wavy or with shallow, blunt, narrow teeth, the surfaces lacking mealiness but with dense, short glandular hairs. Venation noticeably branched, usually with 1 main vein. Inflorescences axillary and terminal, mostly small panicles, some of the axillary ones occasionally reduced to small, sessile clusters of flowers. Flowers not all maturing at the same time. Calyx 5-lobed to below the midpoint, somewhat spreading at maturity and exposing the fruit, the lobes 0.7–0.9 mm long, elliptic-ovate to oblong-elliptic, sharply pointed at the tip, flat or nearly so dorsally, densely pubescent with short glandular hairs. Stamens 5. Stigmas 2. Fruits 0.5–0.8 mm long, ovoid to depressed-ovoid, the seeds mostly positioned horizontally, the wall thin, membranous, and somewhat translucent, smooth, difficult to separate from the seed. Seeds dark brown to nearly black, often somewhat mottled, dull, roughened to finely wrinkled, rounded along the rim. 2n=18. July–October.

Introduced, uncommon in eastern Missouri but to be expected elsewhere (native of Europe, Asia; introduced widely in the U.S. and Canada). Gardens, railroads, and open, disturbed areas.

 


 

 
 
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