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

Cerastium tomentosum L.
snow-in-summer (snow in summer)
Caryophyllaceae (Pink family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #6934)

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Distribution of Cerastium tomentosum
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Species Information

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Biennial or more usually perennial herb from short, slender taproot; forming mats or clumps up to 80 cm across; stems usually numerous, decumbent, freely branched, densely white woolly-hairy, 10-35 cm long.
Stem leaves opposite, oblanceolate, grey-hairy to white woolly-hairy, 3-20 mm long and 2-4 mm wide, 1-nerved, unstalked; stipules lacking.
Inflorescence in an elongated cluster; petals 5, white, longer than the sepals, 5-7 mm long; sepals 5, 2-4 mm long, hairy.
Capsules cylindric, 7-10 mm long, 10-valved; seeds 0.6-0.8 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Disturbed areas in the lowland zone; rare in SW BC, known only from SE Vancouver Island and Vancouver; introduced from Europe.

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

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General References