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FOC | Family List | FOC Vol. 25 | Orchidaceae | Bulbophyllum

13. Bulbophyllum "Section 13"

中华组 zhong hua zu

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. Inflorescences arising near pseudobulbs, solitary, 1-flowered or a ± subumbellate raceme. Pedicel with basal node ± coinciding with attachment of subtending bract. Sepals 3-7-veined; dorsal sepal with margins glabrous to erose or denticulate (with glandular appendages in Bulbophyllum chondriophorum, ciliolate in B. bicolor), lateral sepals twisted inward near base, with upper margins approaching or meeting and connate, with margins glabrous. Petals: margins glabrous, erose to denticulate (with glandular appendages in B. chondriophorum), 1-3-veined; lip: margins without auricles or lateral lobes, margins otherwise ± glabrous (ciliate in B. gongshanense), adaxially ± glabrous (hirsute in B. gongshanense). 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.

Twenty-six provisionally accepted species: India to Indochina, Java to the Philippines; ten species (five endemic) in China.

1 Lip densely hirsute on margin and abaxial surface.   62 B. gongshanense
+ Lip glabrous   (2)
2 (1) Either dorsal sepal or petals entire   (3)
+ Both dorsal sepal and petals toothed, ciliate, fimbriate, or with glandular, wartlike appendages on margins   (6)
3 (2) Margin of dorsal sepal red ciliate; petals entire along margin, 5-veined.   63 B. bicolor
+ Margin of dorsal sepal glabrous; petals erose to denticulate along margin, 3-veined   (4)
4 (3) Front margin of anther cap ciliate; lateral sepals free.   64 B. omerandrum
+ Front margin of anther cap entire to denticulate; lateral sepals fused along upper margin   (5)
5 (4) Pseudobulbs distant, 1-10 cm apart; petiole 2-7 cm.   65 B. forrestii
+ Pseudobulbs contiguous, less than 1 cm apart from each other; petiole less than 1.3 cm.   66 B. taeniophyllum
6 (2) Margins of dorsal sepal and petals with glandular-papillate or clavate-glandular, wartlike appendages.   67 B. chondriophorum
+ Margins of dorsal sepal and petals erose to denticulate   (7)
7 (6) Scape nearly as long as pseudobulb.   68 B. emarginatum
+ Scape much longer than pseudobulb   (8)
8 (7) Petals 5-veined, 7-8 mm.   69 B. chinense
+ Petals 3-veined, ca. 3 mm   (9)
9 (8) Lateral sepals connate along upper and lower margins.   70 B. helenae
+ Lateral sepals connate along upper margins only.   71 B. andersonii


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