Eriogonum umbellatum var. lautum
Phytologia 86: 148. 2004.
Herbs, spreading mats, 1–3 × 3–10 dm. Aerial flowering-stems erect, 1–2 dm, tomentose, without one or more leaflike bracts ca. midlength. Leaves in rather loose rosettes; blade broadly elliptic, (1–) 1.5–4 × (0.5–) 0.8–1.8 (–2) cm, densely white-tomentose to lanate abaxially, white-tomentose and greenish, rarely some floccose or even glabrous and green adaxially, margins plane. Inflorescences compound-umbellate, 3–10 (–12) cm; branches tomentose, without a whorl of bracts ca. midlength; involucral tubes (3–) 3.5–5 mm, lobes (3–) 4–6 mm. Flowers 4–7 mm; perianth bright-yellow.
Phenology: Flowering Jul–Sep.
Habitat: Sandy to gravelly flats, oak and conifer woodlands
Elevation: 800-900 m
Discussion
Variety lautum is restricted to the Scott Valley area of Siskiyou County. It is by far one of the most attractive expressions of the species that could be introduced into the garden.
Selected References
None.
Lower Taxa
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