Bulbophyllum dekockii J.J.Sm., Bull. Jard. Bot. Buitenzorg, sér. 2, 2 (1911) 17
Type: Kock, de XII (holo BO)
Rhizome creeping or partly pendulous, 0.4-2 mm diam.; rhizome scales of the longest internodes distinctly shorter than those internodes, leaving bare large portions of the rhizome. Roots in tufts below most pseudobulbs . Pseudobulbs orbicular to ovoid, 1-8.5 cm apart, 0.3-1.4 by 0.2-1 cm, not flattened. Petiole 1-9 mm. Leaf blade ovate to elliptic, 0.8-4.5 by 0.6-2.4 cm, index 1.2-3, tip obtuse to acuminate. Inflorescence 2.5-7 cm, 1-6-flowered. Peduncle 1-3 cm; bracts c. 3, the longest 3-4 mm. Rachis approx. erect, up to 4 cm. Floral bracts ovate, 2-3 mm, tip acute. Pedicel and ovary 3-5.5 mm, with the node 1-1.5 mm from the floral bract. Flowers all open at the time, moderately opening. Median sepal ovate, 9-18.5 by 2.5-3.6 mm, index 3.6-5, tip acute to long acuminate; rather thin; glabrous. Lateral sepals free, oblique, ovate to triangular, 10-18.5 by 2.5-4 mm, index 3.3-4.6, otherwise as the median sepal. Petals elliptic, 3-5 by 1.2-2 mm, index 1.6-3.3, tip obtuse to acute; thin; approx. glabrous. Lip curved, general outline ovate to elliptic, 3-4.5 by 1-2 mm, index 1.6-3 (not spread), tip obtuse to acute; thick but soft; glabrous; adx. concave near the base, with 2 inconspicuous to distinct ridges converging in front; abx. with an inconspicuous, retuse median ridge. Column from ovary to the tip of the stelidia 0.7-1.5 mm; stigma protruding at its base, but only slightly protruding below the lower margin of the stelidia; orbicular; column-foot without accessories. Stelidia inconspicuous, semicircular, tip rounded. Anther abx. with a ridge; front margin protruding. Pollinia 2. (After Vermeulen, 1993)
Colours: Leaves yellowish to dark green, often suffused with purple. Flowers yellow or white, often suffused with purple, or entirely dark purple.
Habitat: Terrestrial in subalpine grassland; 2710-3250 m.
Flowering time in the wild: January, February, August.
Distribution: Malesia (New Guinea).
Distribution in New Guinea: Papua (Indonesia); Papua New Guinea; see map 96-480M.jpg.
Cultivation: Cool growing terrestrial, requires light position.