Difference between revisions of "Eriogonum umbellatum var. mohavense"

Reveal

Phytologia 86: 149. 2004.

Common names: Mohave sulphur flower
Treatment appears in FNA Volume 5. Treatment on page 345. Mentioned on page 338.
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Revision as of 22:37, 16 December 2019

Herbs, spreading mats, 0.5–2 × 1–3 dm. Aerial flowering stems spreading to erect, (0.3–)0.5–1.5(–2) dm, floccose, without one or more leaflike bracts ca. midlength. Leaves mostly in tight rosettes; blade narrowly elliptic, 0.7–2.5 × 0.3–1 cm, thinly floccose on both surfaces or glabrous adaxially, margins plane. Inflorescences umbellate; branches 2.5–8 cm, thinly floccose or glabrous, without a whorl of bracts ca. midlength; involucral tubes 2–3 mm, lobes 1.5–3 mm. Flowers 3–7 mm; perianth bright yellow.


Phenology: Flowering May–Jun.
Habitat: Sandy to gravelly flats and slopes, sagebrush communities, oak, pinyon-juniper, and montane conifer woodlands
Elevation: 1200-1600 m

Discussion

Variety mohavense is known only from the Black Rock and Wolf Hole mountains area on the Arizona Strip of Mohave County, Arizona. The rays or branchlets of the inflorescences are rather long (2.5–8 cm). The taxon is related to the much more widely distributed, late-season-flowering var. subaridum found to the north and west.

Selected References

None.

Lower Taxa

None.