Difference between revisions of "Atriplex acanthocarpa"

(Torrey) S. Watson

Proc. Amer. Acad. Arts 9: 117. 1874.

Common names: Burscale
Basionym: Obione acanthocarpa Torrey in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 183. 1859
Treatment appears in FNA Volume 4. Treatment on page 370. Mentioned on page 330.
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Latest revision as of 17:02, 6 November 2020

Shrubs or subshrubs, dioecious, evergreen, mainly 2–10 × 4–10+ dm, woody especially basally, unarmed; branchlets obtusely angled to subterete. Leaves persistent, proximal ones opposite, becoming alternate distally, short petiolate or subsessile; blade oblong to oblong-lanceolate, ovate, obovate, or spatulate, 12–40(–50) × 5–25 mm, base commonly subhastate to cuneate, margin entire or sinuate-dentate to strongly undulate-crisped, apex acute. Staminate flowers in interrupted or crowded glomerules 2–4.5 mm thick, in sparsely leafy paniculate spikes to 5+ dm. Pistillate flowers few to solitary, in axillary clusters or in crowded or interrupted, often leafy, erect, branched spicate racemes or racemose panicles to 25+ cm. Fruiting bracteoles on slender or stout stipes (2–)4–20 mm (or sessile), body broadly elliptic to globose, 6–15 mm and wide, spongy, united to the linear apex, margin deeply laciniate, faces appendaged with flattened to hornlike tubercles to 8 mm. Seeds brown, 1.5–2 mm.

Distribution

V4 727-distribution-map.gif

Ariz., N.Mex., Tex., n Mexico.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Leaf blade ovate to rhombic-ovate, elliptic, or spatulate, margin mainly sinuate-dentate; mature fruiting inflorescences ascending to erect; west Texas, s New Mexico, se Arizona Atriplex acanthocarpa var. acanthocarpa
1 Leaf blade, at least some, hastate-lanceolate, or strongly undulate-crisped; mature fruiting inflorescences mainly horizontally spreading; s Texas, Mexico Atriplex acanthocarpa var. coahuilensis
... more about "Atriplex acanthocarpa"
Stanley L. Welsh +
(Torrey) S. Watson +
Obione acanthocarpa +
Burscale +
Ariz. +, N.Mex. +, Tex. +  and n Mexico. +
Proc. Amer. Acad. Arts +
Canescentes +, Confertifoliae +, Nuttallianae +, Obione sect. Deserticola +  and Obione subg. Pterochiton +
Atriplex acanthocarpa +
Atriplex subg. Pterochiton +
species +