Species Information - Bulbophyllum alpinum

Bulbophyllum alpinum J.J.Verm., Schuit. & de Vogel, Phytotaxa 166 (2) (2014) 106

Type: Balgooy, van 108 (holo L; iso K)

Synonyms:

• Pedilochilus alpinum P.Royen, Alp. Fl. New Guinea 2 (1979) 251
• Pedilochilus alpinum P.Royen var. fasciculatum P.Royen, Alp. Fl. New Guinea 2 (1979) 255, fig. k--n
  - Type: Brass & Meyer Drees 9905 (holo L)

Small, epiphytic or terrestrial, sometimes mat-forming, up to 7 cm high herb. Rhizomes light green, creeping, branched. Pseudobulbs green or yellowish, glabrous, slightly apart, erect, ovoid, compressed, 2-5(-14) by 1-3 mm, at base covered by several bracts, these ovate-oblong, 12-15 by 3-8 mm, acute. Leaves olive green, lighter below, patent or spreading, papillate in apical part of margin only, oblong-elliptic to elliptic-obovate, 1-2.5(-7.5) by 0.3-0.5(0.8-1) cm, acute, V-shaped in cross sec tion, midrib grooved above, prominent and crenulate-wavy below, lateral nerves not or clearly visible, margin thin, crenulate wavy, revolute. Inflorescence solitary or in bundles of 2-4. Peduncle pale yellow or light green, glabrous, 1.5-7 cm long, at base with narrowly tubular, 3-8 mm long bracts, that are ob liquely truncate, acute, crested, with one bract halfway and one apical bract. Floral bract whitish, glabrous, widely funnel shaped, 4-6 by 2 mm, truncate and apiculate, 1-nerved. Pedicel glabrous, 2-5 mm long. Ovary olive yellow, glabrous, claviform, 1.5-3 mm long, 6-grooved. Flowers not resupinate. Median sepal glabrous on out side, subdensely puberulous on inside, margin fimbriate, sub orbicular-obovate or ovate, 14-16 by 6-8 mm, apiculate, clawed at base, 5-nerved, nerves crested on outside in basal part but midrib up to apical 1/4. Lateral sepals very finely papillate on outside, scattered finely papillate-puberulous on inside mainly in lower half, papillate along margin, obliquely ellip tic-ovate, 15-17 by 8-70 mm, acute, oblique at base, 5-nerved, nerves crested on outside in basal part, margin involute, very finely papillate on outside, papillate along margins, scattered finely papillate-puberulous on inside mainly in lower half. Lat eral petals glabrous, dark purplish red, obliquely ovate-quad rangular, 6-7 by 3.5-4 mm, obtusish, base shortly clawed, upper wing much wider than lower wing, sigmoid-wavy, 1-nerved, nerve widely crested and the crest sigmoid-wavy. Lip glabrous, 11-12 i by 5-6 mm, epichilium narrowly or broadly ligulate, 1.5-3 by 1.5-3 mm, obtuse, margin involute, not thickened, mesochilium obovoid in outline, 8-9 by 6-7 mm, margins thickened, 5-nerved, midrib crested on inside, grooved on underside, hypochilium at tip with 2 lateral oblong-falcate, 1.5-2.5 by 1 mm large, ap pendages, between these appendages a median pyramidal one with a transverse crest, c. 0.7 mm long. Column short, 1.5-2 mm long. Clinandrium entire. Stelidia subulate, straight, 1-1.2 mm (After van Royen, 1979)

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