Prev Taxon: Genus Bulbophyllum section Lepidorhiza
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Bulbophyllum dekockii
Bulbophyllum dekockii J.J.Sm., Bull. Jard. Bot. Buitenzorg, sér. 2, 2 (1911) 17
Type: Kock, de XII (holo BO)
Synonyms:
- Bulbophyllum jugicola P.Royen, Alp. Fl. New Guinea 2 (1979) 175, fig. 67 ('jugicolum')
- Type: Brass 9247 (holo L; iso AMES, 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)
Leaves yellowish to dark green, often suffused with purple. Flowers yellow or white, often suffused with purple, or entirely dark purple.
Terrestrial in subalpine grassland; 2710-3250 m.
Malesia (New Guinea).
Papua (Indonesia); Papua New Guinea; see map
Cool growing terrestrial, requires light position.
January, February, August.
- Smith, J.J., Nova Guinea 12, 1 (1913) 92, t. 25, fig. 77
- Royen, P. van, Alp. Fl. New Guinea 2 (1979) 173, fig. 66
- Vermeulen, J.J., Orchid Monogr. 7 (1993) 99, fig. 55
- Family Orchidaceae
- Subfamily Epidendroideae
- Tribe Dendrobieae
- Subtribe Bulbophyllinae
- Genus Bulbophyllum
- Section Macrouris
- Species Bulbophyllum dekockii
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Bulbophyllum dekockii
Bulbophyllum dekockii J.J.Sm., photo Graham Corbin, plant habit, in situ in PNG, Keglsugl.
Bulbophyllum dekockii
Bulbophyllum dekockii J.J.Sm., photo Graham Corbin,flower, front view, from PNG, Keglsugl.
Bulbophyllum dekockii
Bulbophyllum dekockii J.J.Sm., Orchid Monogr. 7 (1993) 98, fig. 54, part of drawing J.J. Vermeulen, rearranged
Bulbophyllum dekockii
Bulbophyllum dekockii J.J.Sm., Orchid Monogr. 7 (1993) 98, fig. 54, J.J. Vermeulen, drawing, plant habit and flower analysis, based on a,d LAE 67054 (XXXX) (); b,c,e-j Brass 9247 ()
Bulbophyllum dekockii
Bulbophyllum dekockii J.J.Sm. (as Bulbophyllum jugicolum P.Royen), Alp. Fl. New Guinea 2 (1979) 175, fig. 67, P. van Royen, drawing, based on Brass 9247 (holo L; iso AMES, BO)
Bulbophyllum dekockii
Bulbophyllum dekockii J.J.Sm., P. van Royen, drawing, plant habit and flower analysis
Bulbophyllum dekockii
Bulbophyllum dekockii J.J.Sm., floral analysis, drawing J.J. Smith, from de Kock XII
Bulbophyllum dekockii
Bulbophyllum jugicolum P.Royen, herbarium sheet, Brass 9247 (isotype specimen BO)