Corallorhiza odontorhiza

(Willdenow) Poiret

in F. Cuvier, Dict. Sci. Nat. ed. 2, 10: 375. 1818.

Common names: Fall coral-root small-flowered coral-root corallorhize d’automne
Basionym: Cymbidium odontorhizon Willdenow Sp. Pl. 4(1): 110. 1805
Synonyms: Corallorhiza micrantha Chapman Corallorhiza pringlei Greenman
Treatment appears in FNA Volume 26. Treatment on page 635. Mentioned on page 633, 636.

Stems yellow, greenish, or purplish brown, base strongly thickened, bulbous. Inflorescences: racemes lax, 11–46 × 1–2.5 cm. Flowers 5–26, inconspicuous; perianth open or closed; sepals and petals reddish purple to brown, often suffused with green, broadly lanceolate, 1–2-veined; lateral sepals strongly curved upward and directed forward, 3–4.5 mm; petals 2.5–3.8 mm, connivent with dorsal sepal to form hood over column, or sepals and petals connivent to produce closed flower; lip white, often spotted with purple, ovate to orbiculate-quadrangular, unlobed, 2.7–4.6 ×1.8–3.7 mm, thin, with 2 distinct basal lamellae, margins entire to erose-fringed; column white basally, often purple apically, 1.9–2.5 mm, straight or curved toward lip, with 2 distinct auricles in open-flowered plants; ovary 2.5–5 mm; mentum inconspicuous. Capsules broadly ellipsoid, 5.5–8 × 3.5–5 mm.


V26 1302-distribution-map.jpg

North America, Mexico, Central America.


Varieties 2 (2 in the flora).

Selected References



1 Perianth tending to be closed, column without or with only poorly developed auricles at base on adaxial surface; stigmatic surface 0.3–0.5 mm wide; lip 1.7–2.2(–3) mm wide. Corallorhiza odontorhiza var. odontorhiza
1 Perianth open, column with 2 prominent auricles at base on adaxial surface; stigmatic surface 0.7–1 mm wide; lip 2–3.7 mm wide. Corallorhiza odontorhiza var. pringlei
... more about "Corallorhiza odontorhiza"
Lawrence K. Magrath +  and John V. Freudenstein +
(Willdenow) Poiret +
Cymbidium odontorhizon +
Fall coral-root +, small-flowered coral-root +  and corallorhize d’automne +
North America +, Mexico +  and Central America. +
in F. Cuvier, Dict. Sci. Nat. ed. +
Corallorhiza micrantha +  and Corallorhiza pringlei +
Corallorhiza odontorhiza +
Corallorhiza +
species +