Platanthera chorisiana (Cham.) Rchb.
Chamisso's rein orchid (Chimissso's orchid; small bog orchid)
Orchidaceae (Orchid family)

Introduction to Vascular Plants

Photograph

© Hans Roemer     (Photo ID #25714)


Map

E-Flora BC Static Map

Distribution of Platanthera chorisiana
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Species Information

General:
Perennial herb from spindle-shaped stem-bases, with a few fibrous roots; stems 5-20 cm tall, with 1 or 2 bracts to 2 cm long.
Leaves:
Usually 2 or 3 nearly basal leaves nearly circular or egg-shaped to lanceolate, 2.5-6 cm long, about 1/2 as wide, sheathing.
Flowers:
Inflorescence a terminal, 5- to 18-flowered, crowded spike, the flowers small, greenish, unstalked, the lower flowers shorter than floral bracts; sepals 2 mm long, oblong, 1-veined, the upper sepal slightly hooded; petals strongly 3-veined, slightly shorter and wider than sepals; lip 1.5-2 mm long, nearly as wide, concavely curved, the margins slightly lobed, erect; spur barely 1 mm long, slightly curved, bulbous; column plump, about 1 mm long.
Fruits:
Capsules, ascending to erect.

SourceThe Illustrated Flora of British Columbia

Illustration

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Habitat and Range

Sphagnum bogs, bog forests, and swamps in the lowland and montane zones; infrequent in coastal BC; N to AK and S to WA; Japan.

SourceThe Illustrated Flora of British Columbia

Synonyms

Synonyms and Alternate Names:
Habenaria chorisiana Cham.