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

15. Bulbophyllum sect. Brachystachya Bentham & J. D. Hooker, Gen. Pl. 3: 504. 1883.

微球组 wei qiu zu

Rhizome creeping or straggling; roots sprouting mainly below pseudobulbs, spreading; new shoots arising from basal node of pseudobulb. Pseudobulbs inconspicuous compared to size of plant, apex with 1 leaf. Leaves persistent, thick. Inflorescence solitary, mostly arising near pseudobulbs, an elongate or contracted raceme. Pedicel with basal node ± coinciding with attachment of subtending bract. Sepals: margins glabrous, 3-veined; lateral sepals ca. as long as dorsal sepal or somewhat longer, approaching or partly fused along their lower margins. Petals: margins glabrous to erose or denticulate, 1-veined; lip: margins without auricles or lateral lobes, margins ± glabrous to papillose, adaxially glabrous to papillose. Column: stigma not or only slightly protruding at its base, foot very short, often inconspicuous; anther: front margin not or slightly projecting, abaxially with or without a low, rounded crest; pollinia 4, inner slightly less than 1/2 as long as outer or longer, all without appendages.

Sixty-five provisionally accepted species: India to W Pacific; three species in China.

1 Raceme with a large spathelike basal bract ca. 25 mm.   89 B. cylindraceum
+ Raceme with a small basal bract ca. 8 mm, or with several small bracts lower down on peduncle   (2)
2 (1) Petals acute; raceme cylindric-ellipsoid.   90 B. khasyanum
+ Petals truncate to rounded; raceme globose to ovoid.   91 B. repens


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