Page authors: Don Knoke, David Giblin
Pinguicula vulgaris
common butterwort
WTU specimens
Other herbaria

Distribution: Widely distributed on both sides of the Cascades in Washington; circumboreal, in America extending south to southwest Oregon, east to Montana and New York.

Habitat: Bogs and wet soil in the mountains.

Flowers: July-August

Origin: Native

Conservation Status: Not of concern


, herbaceous perennials from fibrous roots, the scapes 5-15 cm. high.


Leaves all basal, succulent, short-petiolate, broadly oblanceolate to sub-elliptic, 2-5 cm. long and 7-18 mm. wide, slimy on the upper surface.


Flowers solitary on the ends of bractless scapes; calyx 5-lobed, 3 mm. long, the lobes partly united into an upper lip of 3 and lower lip of 2; corolla lavender-purple to nearly white, 1.5-2.5 cm. long including the spur, bilabiate, the upper lip 2-lobed, the lower lip 3-lobed and prolonged into a slender spur 5-9 mm. long, with flaring throat and broad, rounded lobes; stamens 2, ovary superior.



Accepted Name:
Pinguicula vulgaris L.
Publication: Sp. Pl. 1: 17. 1753.

Synonyms & Misapplications:
(none provided)
ssp. macroceras – common butterwort
Additional Resources:

PNW Herbaria: Specimen records of Pinguicula vulgaris in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Pinguicula vulgaris checklist entry.

E-Flora BC: Pinguicula vulgaris atlas page.

CalPhotos: Pinguicula vulgaris photos.

USDA Plants: Pinguicula vulgaris information.

40 photographs:
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