Eriogonum umbellatum var. majus Torr.
sulphur buckwheat
Polygonaceae (Buckwheat family)

Introduction to Vascular Plants

Photograph

© Ian Cumming     (Photo ID #5092)


Map

E-Flora BC Static Map

Distribution of Eriogonum umbellatum var. majus
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Species Information

General:
Perennial herb from a strong taproot and freely branched crown, forming loose flat mats up to 60 cm wide; stems prostrate to ascending, simple, several, 10-30 cm tall/long, usually white-woolly.
Leaves:
Basal leaves elliptic to spoon-shaped, grey- to white woolly-hairy on the lower surface, greenish on the upper, the blades 1-3 (4) cm long, narrowed gradually to the stalks; stem leaves lacking.
Flowers:
Inflorescence a large, simple or compound umbel, subtended by a whorl of leaflike bracts; involucres bell-shaped, hairy, 4-6 mm long, the 6-12 lobes 2-3 mm long, often reflexed; perianths creamy or pale to deep yellow, often tinged with rose or purple, smooth, 6-l0 lobed; flowers usually imperfect.
Fruits:
Achenes, smooth.
Notes:
Two closely related varieties occur in BC:

1. Perianth white to cream or pale yellow................. var. subalpinum (Greene) M. E. Jones

1. Perianth bright yellow...................... var. umbellatum

SourceThe Illustrated Flora of British Columbia

Habitat and Range

Dry grasslands, shrublands, forest openings, rock outcrops and scree slopes in the steppe to alpine zones; frequent in SC and SE BC; S to CO, UT and OR.

SourceThe Illustrated Flora of British Columbia

Synonyms

Synonyms and Alternate Names:
Eriogonum umbellatum Torr.