Difference between revisions of "Eriogonum umbellatum var. devestivum"

Reveal

Great Basin Naturalist 32: 115. 1972.

Common names: Emperor’s sulphur flower
Treatment appears in FNA Volume 5. Treatment on page 347. Mentioned on page 336.
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Revision as of 22:37, 16 December 2019

Herbs, spreading mats, 1–3.5 × 2–6 dm. Aerial flowering stems erect, 1.5–2.5 dm, thinly floccose or glabrous, without one or more leaflike bracts ca. midlength. Leaves in loose rosettes; blade broadly elliptic, 1.5–3(–4) × 1–1.5 cm, glabrous on both surfaces at full anthesis, margins plane. Inflorescences compound-umbellate, branched 2–4 times; branches thinly floccose or glabrous, without a whorl of bracts ca. midlength; involucral tubes 2–3.5 mm, lobes 1–2.5 mm. Flowers 4–7 mm; perianth bright yellow.


Phenology: Flowering Jun–Sep.
Habitat: Sandy to gravelly flats and slopes, sagebrush communities, montane conifer woodlands
Elevation: 800-1800 m

Discussion

Variety devestivum is a glabrous-leaved expression obviously related to var. ellipticum. It is infrequently encountered in Asotin and Columbia counties, Washington; Baker, Grant, and Union counties, Oregon; and Ada, Adams, Blaine, Lemhi, Valley, and Washington counties, Idaho. The plants are bright and showy and would be attractive in the garden.

Selected References

None.

Lower Taxa

None.
James L. Reveal +
Reveal +
Emperor’s sulphur flower +
Idaho +, Oreg. +  and Wash. +
800-1800 m +
Sandy to gravelly flats and slopes, sagebrush communities, montane conifer woodlands +
Flowering Jun–Sep. +
Great Basin Naturalist +
Illustrated +  and Endemic +
Eriogonum umbellatum var. devestivum +
Eriogonum umbellatum +
variety +