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78. Crepidium Blume, Bijdr. 387. 1825.
沼兰属 zhao lan shu
Authors: Xinqi Chen & Jeffrey J. Wood
Fingardia Szlachetko; Glossochilopsis Szlachetko; Pseudoliparis Finet; Pterochilus Hooker & Arnott; Saurolophorkis Margońska & Szlachetko; Seidenfia Szlachetko; Seidenforchis Margońska.
Herbs, terrestrial, rarely epiphytic or lithophytic. Roots hairy. Stem cylindric to pseudobulbous, fleshy, often creeping and rooting in basal part. Leaves 2 to several, thinly textured to fleshy, plicate, petiolate, petiole sheathing at base. Inflorescence apical, erect, unbranched; floral bracts persistent, often recurved or reflexed, lanceolate or setose. Flower usually not resupinate, green, brown, yellow, pink, or purple. Dorsal sepal spreading, free; lateral sepals free or fused, spreading. Petals often narrower than sepals, free, spreading; lip erect, flat, usually concave at base, entire to lobed, auriculate at base or lacking auricles, apical margin entire or toothed, lacking a spur, callus absent. Column lacking a foot, with 2 apical arms on either side of clinandrium, rarely with a dorsal wing or protuberance; anther cap movable, dorsal, dorsiventrally flattened, attached by a slender filament, locules opening ventrally; pollinia 4, almost equal in size, in pairs, clavate, waxy, with 1 delicate viscidium or lacking a viscidium; stigma elliptic to transversely elliptic; rostellum often obtuse or rounded at apex.
About 280 species: throughout the Asian tropics and subtropics, Australasia, and Indian Ocean islands, with a few species in temperate Asia; 17 species (five endemic) in China.
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| 1 |
Lip without basal auricles, narrow, ligulate, entire. |
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1 C. finetii |
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Lip auriculate, mid-lobe entire, toothed, or bilobed |
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(2) |
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| 2 (1) |
Lip auricles short, never stretching backward and embracing column. |
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2 C. ramosii |
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Lip auricles long, stretching backward and embracing column |
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(3) |
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| 3 (2) |
Lip toothed or fimbriate-toothed at apex |
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(4) |
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Lip 2-lobed, entire, or emarginate, never toothed or fimbriate-toothed, at apex |
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(6) |
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| 4 (3) |
Flowers dark purple or blackish purple; lip with 15-20 fimbriate teeth at apex. |
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3 C. orbiculare |
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Flowers dark red, orange, or yellow; lip with several teeth at apex |
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(5) |
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| 5 (4) |
Leaves 2-4; dorsal sepal distinctly longer than lateral sepals. |
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4 C. ovalisepalum |
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Leaves 5-8; dorsal sepal and lateral sepals nearly equal in length. |
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5 C. bancanoides |
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| 6 (3) |
Lip entire or emarginate at apex |
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(7) |
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Lip conspicuously 2-lobed at apex |
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(8) |
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| 7 (6) |
Lip not emarginate at apex; auricles 2-3 mm. |
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6 C. biauritum |
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Lip emarginate at apex; auricles 0.4-0.6 mm. |
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7 C. concavum |
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| 8 (6) |
Leaves 2, subopposite, appressed to substrate. |
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8 C. mackinnonii |
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Leaves often 3-7, if 2, not as above |
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(9) |
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| 9 (8) |
Leaves with colorful markings adaxially, especially stained with white near margins. |
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9 C. calophyllum |
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Leaves plain, without colorful markings |
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(10) |
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| 10 (9) |
Pseudobulbs subglobose; center of lip glabrous or glandular-pilose |
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(11) |
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Pseudobulbs cylindric, cauliform; center of lip not as above |
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(12) |
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| 11 (10) |
Center of lip glabrous. |
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10 C. bahanense |
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Center of lip shortly glandular-pilose. |
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11 C. sichuanicum |
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| 12 (10) |
Dorsal sepal distinctly broader than lateral sepals; basal auricles of lip resembling bat wings. |
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12 C. insulare |
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Dorsal sepal narrower than lateral sepals; basal auricles of lip not as above |
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(13) |
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| 13 (12) |
Lip 10-11 mm; petals 8-9 mm. |
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13 C. acuminatum |
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Lip 5-8 mm; petals 2.5-4.5 mm |
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(14) |
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| 14 (13) |
Lip with an indentation on either side below or near middle formed by involute margins. |
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14 C. khasianum |
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Lip lacking involute margins on both sides below or near middle; indentations, if present, formed by a contraction of margins |
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(15) |
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| 15 (14) |
Pedicel and ovary 6-12 mm, ca. 2 × as long as floral bracts; flowers usually red, ca. 10 mm in diam. |
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15 C. purpureum |
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Pedicel and ovary 5-6 mm, slightly longer than floral bracts; flowers yellow-green, yellowish, or green, rarely purplish green, 6-7 mm in diam |
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(16) |
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| 16 (15) |
Ovary 6-ridged; adaxial surface of leaves purplish. |
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16 C. matsudae |
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Ovary not ridged; adaxial surface of leaves greenish. |
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17 C. hainanense |
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List of lower taxa
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