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Published In: Species Plantarum, Editio Secunda 2: 1493. 1763. (Sp. Pl. (ed. 2)) 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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6. Atriplex rosea L. (red scale, tumbling orach)

Pl. 352 g; Map 1516

Stems 25–100 cm tall, erect or strongly ascending, the branches ascending or spreading. Leaves all alternate or the lowermost leaves occasionally opposite or nearly so, sessile or short-petiolate. Leaf blades 1–7 cm long, less than 3 times as long as wide and widest toward the base, ovate-triangular to ovate, angled at the base, rounded to sharply pointed at the tip, sometimes with 1 or 2 pairs of short, blunt, spreading basal lobes, the margins otherwise irregularly wavy or more commonly with irregular blunt teeth, moderately mealy and sometimes appearing silvery gray on both surfaces (sometimes becoming nearly glabrous with age). Staminate flowers appearing axillary among the uppermost leaves and/or in short, dense terminal spikes. Pistillate flowers in axillary clusters, all similar, lacking a perianth. Bracts at fruiting fused to about the midpoint, 3–6(–10) mm long, rhombic to ovate-triangular in outline, appearing sessile or narrowed to a short, stalklike base, the free portions of the margins with several fine teeth, the fused portion becoming hardened and somewhat bony, the surfaces sometimes with a patch of short, narrow tubercles or a low crest. Fruits difficult to separate from the bracts. Seeds all similar in size and color, 2–3 mm long, brown, dull, the tip of the radicle (seedling root) positioned alongside the remaining body of the seed. 2n=18. July–September.

Introduced, uncommon, known only from the St. Louis and Kansas City metropolitan areas and Howard County (native of Europe, Asia, Africa; widely introduced in North America and Australia). Saline seeps and banks of streams; also railroads.

In the western United States, red scale has been used for animal feed, and in portions of Europe, it is used to make potash.

 


 

 
 
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