familyPolygonaceae
subfamilyPolygonaceae subfam. Eriogonoideae
genusEriogonum
subgenusEriogonum subg. Oligogonum
speciesEriogonum umbellatum
Difference between revisions of "Eriogonum umbellatum var. humistratum"
Phytologia 66: 260. 1989.
Common names: Scott Mountain sulphur flower
Endemic
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name=Eriogonum umbellatum var. humistratum | name=Eriogonum umbellatum var. humistratum | ||
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|publication year=1989 | |publication year=1989 | ||
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|subfamily=Polygonaceae subfam. Eriogonoideae | |subfamily=Polygonaceae subfam. Eriogonoideae | ||
|genus=Eriogonum | |genus=Eriogonum | ||
Latest revision as of 22:13, 5 November 2020
Herbs, prostrate mats, 0.7–2 × 1–3 dm. Aerial flowering stems erect or nearly so, 0.5–1.5 dm, floccose, without one or more leaflike bracts ca. midlength. Leaves in rather compact rosettes; blade broadly elliptic, 0.5–1(–1.5) × 0.5–1 cm, densely white-tomentose on both surfaces or slightly less so adaxially. Inflorescences umbellate; branches (2–)2.5–5 cm, floccose, without a whorl of bracts ca. midlength; involucral tubes 1.5–2 mm, lobes 1.5–3 mm. Flowers 3–6 mm; perianth bright yellow.
Phenology: Flowering Jun–Sep.
Habitat: Gravelly serpentine slopes and ridges, montane conifer woodlands
Elevation: 1700-2800 m
Discussion
Variety humistratum is restricted to exposed serpentine in four areas in Siskiyou and Trinity counties of northern California: White Mountain, Mt. Eddy-Scott Mountain, the Marble Mountains, and Mt. Shasta.
Selected References
None.
Lower Taxa
None.