Page authors: Don Knoke, David Giblin
Liparis loeselii
fen orchid, Loesel's twayblade

Distribution: Occurring east of the Cascades crest in Washington in south-central Washington; Northwest Territory to Washington, east to Montana; also from Canadian Great Plains to eastern North America where more common; also in western and central Europe.

Habitat: Around springs and in bogs.

Flowers: July-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Endangered in Washington (WANHP)


Glabrous, scapose perennials from an enlarged crown, the scape 7-20 cm. tall.


Leaves 2, basal, erect, oblong-elliptic, 5-15 cm. long, narrowed to winged petioles.


Inflorescence a several-flowered, terminal, loose, bracteate raceme, the floral bracts linear-lanceolate, 1.5-2.5 mm. long; flowers white to yellowish-green; sepals 3, narrowly lanceolate, spreading, 5-7 mm. long, 3-nerved; 2 smaller petals narrower than the sepals, 4-5 mm. long, 1-nerved; third petal (lip) 4-5 mm. long, oblong-oval, abruptly acute, curved downward, 5-7 veined; stamens and style fused to form a column 2.5 mm. long, very broad at the base.



Accepted Name:
Liparis loeselii (L.) Richardson
Publication: De Orchid. Eur. 38. 1817.

Synonyms & Misapplications:
Leptorchis loeselii (L.) MacMill.
Liparis correana (Barton) Spreng.
Malaxis correana W. Barton
Malaxis longifolia W. Barton
Ophrys loeselii L.
Additional Resources:

PNW Herbaria: Specimen records of Liparis loeselii in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Liparis loeselii checklist entry.

E-Flora BC: Liparis loeselii atlas page.

CalPhotos: Liparis loeselii photos.

USDA Plants: Liparis loeselii information.

1 photographs:
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