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

Psilocarphus brevissimus Nutt.
Dwarf Woolly-heads (Robbin's Pondweed; short woollyheads)
Asteraceae (Aster family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #13976)

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Distribution of Psilocarphus brevissimus
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Psilocarphus brevissimus var. brevissimus

Species Information

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Annual herb from a short taproot; stems prostrate and matted, much-branched, rarely erect and simple in dwarfed forms, woolly-hairy, 8-20 cm long.
Basal leaves lacking; stem leaves opposite, lance-linear, lance-oblong or lance-triangular, whitish woolly-hairy, 4-15 mm long, 1.5 mm wide.
Heads disciform, usually solitary in leaf axils or at tips of branches; involucres lacking; receptacular bracts hooded and balloonlike, 2.5-4.0 mm long at maturity; female flowers mostly 50-80, rarely as few as 20 in dwarfed forms.
Achenes nerveless, more or less cylindric, glabrous, tipped with a small, offset style, 1.0-2.0 mm long; pappus lacking.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist vernal meadows in the montane zone; rare in SC BC, known only from the Princeton area; S to MT, UT and MX, Chile.

Source: The Illustrated Flora of British Columbia

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References