Difference between revisions of "Atriplex pusilla"

(Torrey) S. Watson

Proc. Amer. Acad. Arts 9: 110. 1874.

Common names: Dwarf orach
Basionym: Obione pusilla Torrey ex S. Watson Botany (Fortieth Parallel), 291. 1871
Treatment appears in FNA Volume 4. Treatment on page 356. Mentioned on page 328.
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|name=Obione pusilla
 
|name=Obione pusilla
 
|authority=Torrey ex S. Watson
 
|authority=Torrey ex S. Watson
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|rank=species
 
|publication_title=Botany (Fortieth Parallel),
 
|publication_title=Botany (Fortieth Parallel),
 
|publication_place=291. 1871
 
|publication_place=291. 1871
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name=Atriplex pusilla
 
name=Atriplex pusilla
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|authority=(Torrey) S. Watson
 
|authority=(Torrey) S. Watson
 
|rank=species
 
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|publication year=1874
 
|publication year=1874
 
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V4/V4_688.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V4/V4_688.xml
 
|genus=Atriplex
 
|genus=Atriplex
 
|subgenus=Atriplex subg. Obione
 
|subgenus=Atriplex subg. Obione

Revision as of 22:42, 16 December 2019

Herbs, freely branched, 0.5–2.5 dm; branches spreading to erect, typically suffused with red, slender, sparsely scurfy. Leaves alternate except proximally, not especially numerous; blade elliptic to subelliptic or ovate, 2–12 × 3–6 mm, base acute, rounded, or subcordate, margin entire, gray to almost green scurfy. Flowers solitary or paired in axils, staminate near branch ends, calyx 5-cleft. Fruiting bracteoles simulating tiny bracteate leaves, sessile, ovate, compressed, 1–2 × 1 mm, united to apex, abruptly acute to acuminate, entire, faces plane. Seeds brownish, 0.8–1 mm.


Phenology: Flowering Jun–Oct.
Habitat: Saline substrates in valley bottoms, playas, and along drainages with greasewood, rabbitbrush, shadscale, and sagebrush
Elevation: 1000-2100 m

Discussion

Atriplex pusilla is closely similar to, and possibly a near ally of, the geographically disjunct A. parishii complex of the Great Valley of California, which it simulates in all main features. The very tiny fruiting bracteoles, very difficult to discern among the distal bracteate leaves, are characteristic and apparently closely similar only to those of A. parishii var. minuscula. The red stems are almost universal in plants of this species.

Selected References

None.

Lower Taxa

None.
... more about "Atriplex pusilla"
Stanley L. Welsh +
(Torrey) S. Watson +
Obione pusilla +
Dwarf orach +
Calif. +, Nev. +  and Oreg. +
1000-2100 m +
Saline substrates in valley bottoms, playas, and along drainages with greasewood, rabbitbrush, shadscale, and sagebrush +
Flowering Jun–Oct. +
Proc. Amer. Acad. Arts +
Atriplex pusilla +
Atriplex subsect. Pusillae +
species +