Difference between revisions of "Eriogonum umbellatum var. cognatum"

(Greene) Reveal

SouthW. Naturalist 13: 357. 1968.

Common names: Flagstaff sulphur flower
Basionym: Eriogonum cognatum Greene
Synonyms: Eriogonum umbellatum subsp. cognatum (Greene) S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 352. Mentioned on page 337.
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V5/V5_712.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V5/V5_712.xml
 
|subfamily=Polygonaceae subfam. Eriogonoideae
 
|subfamily=Polygonaceae subfam. Eriogonoideae
 
|genus=Eriogonum
 
|genus=Eriogonum

Revision as of 17:40, 18 September 2019

Herbs, compact mats, 1–2(–2.5) × 1–3 dm. Aerial flowering stems erect, 1–1.5 dm, glabrous, without one or more leaflike bracts ca. midlength. Leaves in loose rosettes; blade oblong-obovate to elliptic or oval, (1–)1.5–2(–2.5) × 1–1.5(–2) cm, densely white-tomentose abaxially, thinly floccose or glabrous and dark green adaxially, margins plane. Inflorescences compound-umbellate, branched 2–4 times; branches glabrous, without a whorl of bracts ca. midlength; involucral tubes 3–5 mm, lobes 1–2.5 mm. Flowers 4–7 mm; perianth bright yellow.


Phenology: Flowering Jul–Sep.
Habitat: Sandy flats and slopes, sagebrush communities, oak and montane conifer woodlands
Elevation: 1600-2200 m

Discussion

Variety cognatum is localized and rather infrequent in south-central Coconino County and also barely enters Gila and Yavapai counties. It is seen most frequently in the greater Flagstaff area.

Selected References

None.

Lower Taxa

None.
James L. Reveal +
(Greene) Reveal +
Eriogonum cognatum +
Flagstaff sulphur flower +
1600-2200 m +
Sandy flats and slopes, sagebrush communities, oak and montane conifer woodlands +
Flowering Jul–Sep. +
SouthW. Naturalist +
Illustrated +  and Endemic +
Eriogonum umbellatum subsp. cognatum +
Eriogonum umbellatum var. cognatum +
Eriogonum umbellatum +
variety +