Neottia convallarioides
broad-leaved twayblade
Orchidaceae (Orchid family)
Introduction to Vascular Plants
broad-leaved twayblade
Orchidaceae (Orchid family)
Introduction to Vascular Plants
Species Information
General:
Perennial herb from slender rhizomes, with fibrous roots; stems 10-35 cm tall, with 2 leaves, glandular-hairy above.
Leaves:
Two, near middle of stem, roughly opposite, elliptic to broadly egg-shaped or nearly circular, 2-7 cm long, 1.5-6 cm wide, smooth, abruptly tapered to base.
Flowers:
Inflorescence a many-flowered, terminal raceme, the flowers yellowish-green; sepals 4.5-6 mm long, narrowly lanceolate, 1-veined, distinct; petals similar to sepals but narrower, 4-5 mm long; lip 8-13 mm long, 5-7 mm wide at tip, broadly wedge-shaped, with a shallow notch at tip, base with a short triangular tooth on each side, short-clawed; column 2.5-3.5 mm long.
Fruits:
Capsules, spreading, egg-shaped, to 4 mm long.
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.
Illustration Source: The Illustrated Flora of British Columbia
Habitat and Range
Moist forests, bogs and streambanks in the montane zone; infrequent in BC south of 54 degrees N, rare in NW BC; amphiberingian, N to AK, E to NF and S to ME, NH, MI, WI, MN, SD, CO, AZ and CA; E Asia.Status Information
Synonyms
Synonyms and Alternate Names:
Listera convallarioides (Sw.) Nutt. ex Elliott