Difference between revisions of "Eriogonum nudum var. scapigerum"

(Eastwood) Jepson

Fl. Calif. 1: 420. 1914.

Common names: Sierran crest wild buckwheat
Endemic
Basionym: Eriogonum scapigerum Eastwood Proc. Calif. Acad. Sci., ser. 3, 3: 286. 1902
Synonyms: Eriogonum latifolium var. scapigerum (Eastwood) S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 311. Mentioned on page 310.
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|common_names=Sierran crest wild buckwheat
 
|common_names=Sierran crest wild buckwheat
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|special_status={{Treatment/ID/Special_status
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|code=E
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|label=Endemic
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}}
 
|basionyms={{Treatment/ID/Basionym
 
|basionyms={{Treatment/ID/Basionym
 
|name=Eriogonum scapigerum
 
|name=Eriogonum scapigerum
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|publication title=Fl. Calif.
 
|publication title=Fl. Calif.
 
|publication year=1914
 
|publication year=1914
|special status=
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|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V5/V5_619.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V5/V5_619.xml
 
|subfamily=Polygonaceae subfam. Eriogonoideae
 
|subfamily=Polygonaceae subfam. Eriogonoideae
 
|genus=Eriogonum
 
|genus=Eriogonum

Latest revision as of 23:12, 5 November 2020

Plants 1–2 dm. Aerial flowering stems not fistulose, 1–1.8 dm, glabrous. Leaves basal; blade 1–2 × 0.3–0.8(–1) cm, tomentose abaxially, mostly glabrous adaxially, margins plane. Inflorescences capitate or nearly so, 2–5 × 2–5 cm; branches glabrous. Involucres 3–6 per cluster, 2–3 mm, glabrous or sparsely pubescent. Flowers 2–3 mm; perianth white, usually glabrous, rarely slightly pubescent.


Phenology: Flowering Jul–Sep.
Habitat: Granitic sandy flats, slopes, ridges, talus slopes, and alpine fell-fields, mountain meadow and high-elevation sagebrush communities, alpine conifer woodlands
Elevation: 2800-3800 m

Discussion

Variety scapigerum is the alpine expression of the species and occurs in the Sierra Nevada (Fresno, Inyo, Madera, Mariposa, Mono, Tulare, and Tuolumne counties). It is not always distinct from var. deductum. Reduction of both var. deductum and var. scapigerum into an already variable var. nudum could be justified, but limited garden studies suggest that the extremes are genetically fixed. Specimens from the southern Sierra Nevada tend to have slightly pubescent flowers, suggesting that these may be from populations of depauperate var. pauciflorum.

Selected References

None.

Lower Taxa

None.
James L. Reveal +
(Eastwood) Jepson +
Eriogonum scapigerum +
Sierran crest wild buckwheat +
2800-3800 m +
Granitic sandy flats, slopes, ridges, talus slopes, and alpine fell-fields, mountain meadow and high-elevation sagebrush communities, alpine conifer woodlands +
Flowering Jul–Sep. +
Eriogonum latifolium var. scapigerum +
Eriogonum nudum var. scapigerum +
Eriogonum nudum +
variety +