Odontochilus guangdongensis S. C. Chen S. W. Gale & P. J. Cribb, Fl. China. 25: 81. 2009.

广东齿唇兰 guang dong chi chun lan

Replaced synonym: Chamaegastrodia nanlingensis H. Z. Tian & F. W. Xing, Novon 18: 261. 2008, not Odontochilus nanlingensis (L. P. Siu & K. Y. Lang) Ormerod, Taiwania 48: 91. 2003 [see p. 83].

Plants holomycotrophic, 20-26 cm tall. Rhizome hazel in color, translucent, fleshy, slender, up to 25 cm; roots coralloid. Stem erect, light brown, slender to stout, leafless, with many sheathing scales; scales overlapping, brick-red, membranous, puberulent along margin. Rachis up to 6 cm, subdensely 4-9-flowered, puberulent; floral bracts maroon, ovate-lanceolate, ca. 8 × 3.2 mm, ca. as long as ovary, outer surface puberulent, apex acuminate. Flowers not resupinate; ovary and pedicel fusiform, not twisted, ca. 8 mm, finely puberulent. Sepals fawn-colored, puberulent on outer surface and densely so at apex; dorsal sepal connivent with petals, ovate, cymbiform, 3.8-4.1 × 1.8-2 mm, 1-veined, apex acute; lateral sepals slightly spreading, narrowly ovate-falcate, oblique, 7-7.2 × 3.2-3.5 mm, 2-veined, apex acute. Petals fawn-colored, linear-lanceolate, oblique, falcate, 4.5-4.8 × 1-1.3 mm, 1-veined, apex acute; lip yellow, Y-shaped, 11.2-12.2 mm; hypochile slightly dilated, concave-saccate, 2-2.2 mm, containing 2 sessile, subglobose calli at base; mesochile ca. 5.5 mm; flanges narrow, irregularly erose-crenulate; epichile transversely dilated, 3.2-4 × ca. 7 mm, 2-lobed; lobes diverging at acute angle to one another, subquadrate, 3.2-4 × 2.8-3.2 mm, margin slightly erose, apex truncate. Column short, with 2 oblong, lamellate wings; anther lanceolate, ca. 2 mm, apex acuminate; rostellum erect, furcately 2-lobed. Capsule brick-red, ellipsoid, ca. 11 × 5 mm. Fl. Aug.

● Humus-rich soils in evergreen broad-leaved forests; 1300-1600 m. Guangdong, Hunan.