Broad-lipped Twayblade

Neottia convallarioides

Summary 3

Neottia convallarioides is a species of orchid known by the common names broad-lipped twayblade and broad-leaved twayblade. It was formerly placed in the genus Listera, but molecular phylogenetic studies have shown that Neottia nidus-avis, the bird's-nest orchid, evolved within the same group, and all species of Listera have been moved to Neottia.

Description 4

Plants 5–37 cm, somewhat stoloniferous. Stems green, succulent, glabrous. Leaves: blade green, broadly ovate to elliptic, oval or suborbiculate, 2–7 × 1.5–5.8 cm, apex obtuse to rarely acute or apiculate. Inflorescences 5–20-flowered, lax, 20–120 mm; floral bracts semitranslucent, rhombic-ovate to lanceolate, 3–5 × 1–2.5 mm, apex acute to acuminate; peduncle and rachis densely whitish glandular-pubescent. Flowers yellowish green, sometimes faintly tinged with purple; pedicels slender, 2.5–7 mm, glandular-pubescent; ovary glandular-pubescent, becoming glabrate as it matures; sepals and petals reflexed away from column and lip; dorsal sepal ovate-lanceolate to elliptic, 4.5–5 × 1.5–2 mm, apex obtuse to acute; lateral sepals lanceolate, falcate, 4.5–5.5 × 1.5–1.8 mm, apex acute to obtuse; petals linear, falcate, 4–5 × 0.8–1 mm; lip cuneate, apex dilated and shallowly notched, lateral lobes rounded, with small tooth in sinus, tapering to short, slender claw, with indistinct triangular tooth on either side of base above claw, 8–13 × 5–7 mm, margins minutely bristly-ciliate; column arcuate, slender, 2.5–3.5(–4) × 1 mm, apex slightly expanded. Capsules ellipsoid, 8 × 5 mm, essentially glabrous. 2n = 36.

Sources and Credits

  1. (c) Cheryl Beyer, some rights reserved (CC BY-NC), uploaded by Cheryl Beyer
  2. (c) Samuel Brinker, some rights reserved (CC BY-NC), uploaded by Samuel Brinker
  3. Adapted by bpff from a work by (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Neottia_convallarioides
  4. (c) Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/5018747

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