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

Gayophytum humile Juss.
dwarf groundsmoke
Onagraceae (Evening Primrose family)

Introduction to Vascular Plants

© Curtis Bjork  Email the photographer   (Photo ID #21990)

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Distribution of Gayophytum humile
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Species Information

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Annual herb from a slender taproot; stems very leafy, 5-20 cm tall, simple or branched below, usually glabrous, sometimes greyish-hairy.
Linear to linear-spoon-shaped, 0.5-3 cm long, 1-2 mm wide, entire, not significantly reduced above.
Inflorescence a crowded spike, the bracts leaf-like and hiding flowers and fruits, the flowers opening at dawn; hypanthium about 0.2 mm long; petals 0.8-1.5 mm long, white to pinkish; sepals about 1 mm long; largest stamens about 0.7 mm long; ovaries glabrous or glandular fine-hairy.
Capsules, 7-15 mm long, linear to somewhat club-shaped, smooth or very slightly constricted between seeds, the lateral 2 valves staying attached; unstalked or nearly so; seeds 24-50, nearly opposite when compared between chambers, ascending at an oblique angle, 0.5-0.75 mm long, glabrous to fine-hairy.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry sandy slopes in the montane zone; rare in S BC east of the Cascade Mountains; E to SW AB and S to ID, MT, CO and S CA; Chile.

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.

Synonyms and Alternate Names

Gayophytum nuttallii Torr. & A. Gray

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References