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14. Bulbophyllum sect. Cirrhopetalum (Lindley) H. G. Reichenbach, Ann. Bot. Syst. 6: 259. 1861.
单叶卷瓣兰组 dan ye juan ban lan zu
Cirrhopetalum Lindley, Gen. Sp. Orchid. Pl. 45, 58. 1830, nom. cons.
Rhizome creeping or straggling; roots sprouting mainly below pseudobulbs, spreading; new shoots arising from basal node of pseudobulb. Pseudobulbs distinct, apex with 1 leaf. Leaves persistent, thick. Inflorescence solitary, arising near pseudobulbs, 1-flowered or a ± subumbellate raceme. Pedicel with basal node ± coinciding with attachment of subtending bract. Sepals 3-5-veined; dorsal sepal with margins ciliate, fimbriate, or with paleaceous appendages (with a single apical thread in Bulbophyllum amplifolium); lateral sepals twisted inward near base, with upper margins approaching or meeting and connate, margins glabrous to ciliolate. Petals: margins fimbriate or with paleaceous appendages, 1-3-veined; lip: margins with or without auricles above base, margins usually ± glabrous, adaxially ± glabrous. Column: stigma not protruding at its base, foot distinct; anther: front margin projecting or not, abaxially with or without a low, rounded crest; pollinia 4, inner ca. 1/2 as long as outer or longer, all without appendages.
Fifty-seven provisionally accepted species: India to W Pacific, also Africa and Madagascar; 17 species (ten endemic) in China.
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1 |
Dorsal sepal entire, with a terminal thread only |
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(2) |
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Dorsal sepal ciliate to fimbriate, or with other appendages along margins |
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(3) |
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2 (1) |
Lip with small auricles well above base; stelidia straight or slightly curved downward, triangular. |
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72 B. picturatum |
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Lip without auricles; stelidia strongly curved downward, hook-shaped and fusiform. |
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73 B. amplifolium |
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3 (1) |
Lateral sepals 15-19 cm. |
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74 B. rothschildianum |
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Lateral sepals less than 6 cm |
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(4) |
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4 (3) |
Scape ca. as long as pseudobulb |
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(5) |
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Scape much longer than pseudobulb |
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(6) |
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5 (4) |
Lateral sepals 5-7 mm, ca. 2 × as long as dorsal sepal or shorter. |
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75 B. brevipedunculatum |
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Lateral sepals ca. 10 mm, ca. 2.5 × as long as dorsal sepal or longer. |
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76 B. henanense |
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6 (4) |
Lateral sepals 0.7-1.4 cm |
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(7) |
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Lateral sepals 1.5-3.5 cm or longer |
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(8) |
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7 (6) |
Adaxial surface of lip glabrous; lateral sepals 0.7-1.1 cm. |
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77 B. albociliatum |
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Adaxial surface of lip partly papillose; lateral sepals 1.2-1.4 cm. |
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78 B. kuanwuense |
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8 (6) |
Lateral sepals long caudate at apex. |
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79 B. pecten-veneris |
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Lateral sepals obtuse to acute at apex |
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(9) |
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9 (8) |
Stelidia of column narrowly lanceolate, ca. 5 mm. |
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80 B. longibrachiatum |
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Stelidia of column toothlike, filiform, or subulate, less than 1.5 mm |
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(10) |
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10 (9) |
Lateral sepals free, with or without upper and lower margin inrolled; or lateral sepals partly connate and with upper and lower margin inrolled |
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(11) |
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Lateral sepals connate along upper margin, without inrolled margins (lateral sepals may be folded over midvein) |
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(13) |
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11 (10) |
Lateral sepals without inrolled margins, free. |
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81 B. taiwanense |
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Lateral sepals with inrolled margins, free or partly connate |
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(12) |
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12 (11) |
Lateral sepals ca. 3.4 cm; lip with 2 keels adaxially. |
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82 B. setaceum |
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Lateral sepals 1.2-1.5 cm; lip without keels adaxially. |
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83 B. melanoglossum |
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13 (10) |
Floral bracts 7-8 mm; column ca. 6 mm. |
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84 B. pingtungense |
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Floral bracts 3-5 mm; column 1-3 mm |
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(14) |
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14 (13) |
Lip with 2 longitudinal grooves and between them a keel adaxially. |
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85 B. tseanum |
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Lip without grooves and keel as above |
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(15) |
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15 (14) |
Stelidia suborbicular. |
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86 B. lepidum |
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Stelidia subulate |
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(16) |
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16 (15) |
Dorsal sepal acuminate. |
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87 B. hirundinis |
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Dorsal sepal rounded to obtuse. |
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88 B. fimbriperianthium |
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