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

Lomatogonium rotatum (L.) Fr. ex Fernald
marsh felwort
Gentianaceae (Gentian family)

Introduction to Vascular Plants

© Alfred Cook  Email the photographer   (Photo ID #8449)

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Distribution of Lomatogonium rotatum
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Species Information

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Annual herb from a small taproot; stems erect or ascending, simple to freely branched, 10-30 cm tall.
Basal leaves oblanceolate or spoon-shaped, soon deciduous; stem leaves opposite, lanceolate, 1-3 cm long.
Inflorescence an open raceme-like cluster of terminal or mostly axillary flowers on long slender stalks from the upper leaves; corollas blue or white, 6-15 mm long, 4- to 5-lobed, the lobes cleft nearly to the base, elliptic to egg-shaped, often purple-veined, each lobe with a pair of fringed, scale-like appendages at the base; calyces deeply 4- to 5-lobed, the lobes linear to linear-lanceolate, about 4/5 the length of the corollas; stamens nearly 1/2 the length of the corollas; anthers 2 mm long.
Capsules, cylindric, 1.0-1.7 cm long, slightly longer than the corolla; seeds oblong, prismatic, wingless, brown, deeply few-pitted.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Wet to moist fens, meadows and shorelines in the montane to alpine zones; rare in N BC; circumpolar, N to AK, YT and NT, E to NF and S to ID, WY and NM; Eurasia.

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

Lomatogonium rotatum subsp. tenuifolium (Griseb.) A.E. Porsild
Pleurogyne rotata (L.) Griseb.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References