E-Flora BC: Electronic Atlas of the Flora of British Columbia

Balsamorhiza deltoidea Nutt.
deltoid balsamroot
Asteraceae (Aster family)

Introduction to Vascular Plants

© Patrick Lilley  Email the photographer   (Photo ID #6761)

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Distribution of Balsamorhiza deltoidea
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Species Information

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Perennial herb from a deep taproot and woody stem-base; stems ascending, few to several, densely glandular and sparsely long-hairy, 0.2-1.0 m tall.
Basal leaves long-stalked, the blades mostly triangular, 10-50 cm long, 10-20 cm wide, green, inconspicuously stiff-hairy and often glandular, prominently nerved, round-toothed; stem leaves few, lanceolate to linear, greatly reduced.
Heads with ray and disk flowers, 1-4, the disk 2.5 cm or more, the lateral heads smaller; involucral bracts lanceolate to oblong-lanceolate, slightly woolly, the outer ones 1-4 cm long and herbaceous, exceeding the inner ones; ray flowers 13 or 21 in a terminal head, yellow, 2-3 cm long; disk flowers 5-7 mm long, yellow.
Achenes glabrous, 7-8 mm long; pappus lacking.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry grassy areas and rocky, open woodlands in the lowland zone; rare on SE Vancouver Island; S to CA.

Source: The Illustrated Flora of British Columbia


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References