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Common Herb Species of the Northwest Forest

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Platanthera orbiculata
Round-leaved Orchid
Orchidaceae (Orchid Family)

Description

Round-leaved Orchid General - a perennial from fleshy roots; stems growing up to 30 cm tall (usually 10 - 20 cm), leafless; sheathing bracts rare.

Leaves - single (rarely 2) at stem base, 4 - 12 cm long, egg- to lance-shaped, broadest above middle; blunt-tipped, tapers to base.

Flowers - 3 - 12 in loose, slender cluster at stem tip; greenish white to yellowish green; upper sepal broad, rounded; other sepals and petals lance-shaped; lip narrow, 5 - 8 mm long; spur slender, tapering, same length or shorter than lip; appearing mid-summer.

Fruit - erect, many-seeded, ellipsoid, up to 1 cm long capsules; ripening late-summer.

Habitat

Bogs, fens, swamps and moist to wet woods; widespread across boreal forest north to tundra; more or less circumpolar; in Northwestern Ontario, primarily near the coast of Lake Superior and the more southern parts of the region.



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