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FOC | Family List | FOC Vol. 25 | Orchidaceae

133. Cryptochilus Wallich, Tent. Fl. Napal. 36. 1824.

宿苞兰属 su bao lan shu

Authors: Xinqi Chen & Jeffrey J. Wood

Xiphosium Griffith.

Herbs, epiphytic or lithophytic. Rhizome creeping. Pseudobulbs tufted, ovoid or dilated, enclosed within several acute, imbricate, brown sheaths below, 1-leaved at apex or with 2 or 3 leaves toward apex, covered when young by acute sheaths. Leaves suberect to erect, conduplicate, leathery, articulate to apex of sheath. Inflorescence terminal, synanthous, racemose, secund; floral bracts prominent, lanceolate, almost as long as flowers. Flowers resupinate, campanulate or opening widely, spreading or subnutant, white, pink, red, or yellow, small, glabrous. Sepals fused into a cylindric tube except for their apical 1/4, or dorsal sepal free, lateral sepals oblique at base, attached to column foot to form a conic mentum. Petals free, enclosed in tube, oblanceolate, smaller than sepals; lip entire and ecallose, or 3-lobed and callose, recurved in apical half, lacking a spur, firmly attached to column foot to form an obscure mentum. Column with a foot ca. as long as or longer than column; anther 8-locular; pollinia 8, clavate, attached to a prominent, elongate, narrowly elliptic viscidium, bifid at apex; rostellum prominently bilobed; ovary markedly keeled, triangular in cross section.

About ten species: Bhutan, S China, N India, Laos, Myanmar, Nepal, Thailand, Vietnam; three species (one endemic) in China.

1 Pseudobulbs 1-leaved; floral bracts 2-5 cm; sepals dorsally carinate; inflorescence laxly 2-5-flowered; flowers white or pink.   3 C. roseus
+ Pseudobulbs 2-leaved; floral bracts 6-21 mm; sepals not dorsally carinate; inflorescence subdensely 7- to many flowered; flowers yellow or scarlet   (2)
2 (1) Sepaline tube yellow; pollinia yellow.   1 C. luteus
+ Sepaline tube scarlet; pollinia green.   2 C. sanguineus

Lower Taxa


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