Bulbophyllum tapeinophyton

Bulbophyllum tapeinophyton

Bulbophyllum tapeinophyton J.J.Verm., Schuit. & de Vogel. 2014. Phytotaxa 166 (2): 108

Type: Lam 1471


  • Pedilochilus humile J.J.Sm., Nova Guinea 14 (1929) 440

Epiphyte, very small, tufted. Pseudobulbs close together, ovoid, longitudinally grooved, 0.5 by 0.36 cm; 1-leaved. Leaf oblong to lanceolate-subelliptic, acute, channelled, with convex sides, fleshy, 0.9-1.7 by 0.5-0.47 cm; base shortly cuneate and conduplicate; apex minutely cellular-crenulate; above obtusely angled. Inflorescences 1-flowered, fascicled; peduncle filiform, c. 1.2-1.4 cm long, with c. 3 small, tubular, to the top dilated sheaths. Floral bract obliquely funnel-shaped, 0.22 cm long; apex obliquely truncate, slightly keeled. Flower medium size. Median sepal broadly oblong, ovate-elliptic, slightly acuminate, acute, concave, 3-nerved, in total slightly more than 1 by 0.43 cm; base a short, almost 0.3 by 0.17 cm big claw; inside puberulous; dorsally to the base slightly papillose; margins finely ciliate. Lateral sepals obliquely elliptic, obtuse, obtuse, apiculate, concave, 3-(to 5-)nerved, in total c. 1.15 by 0.63 cm; base a short, oblique, 0.2 cm long claw; front margin abruptly bent inwards, outside on the bend keeled, finely ciliate; posterior margins involute, papillose; margins facing the median sepal dorsally papillose; inside sparsely puberulous. Petals clawed, strongly oblique, wavy, in the middle obliquely hollow-concave, in total 0.46 long; claw 0.13 cm long; blade obliquely oblong, above the base cuneate, dilated in the obliquely deltoid, shortly triangular-acuminate, acute, 0.35 by almost 0.3 cm; apex recurved, 1-nerved, dorsally strongly keeled, glabrous posterior margins strongly recurved-convex; front margin at the base abruptly angular-dilated, cuneate. Lip porrect, immobile, channelled, ribbed, when not flattened 0.75 by almost 0.4 cm; from claw short fleshy a thickening transversely with in blade conspicuously cymbiform-concave trilobulam obovate; margins incurved, dilated, 5-nerved; nerves 2, on either side margini close together; lateral basal lobes obliquely oblong, strongly falcate-recurved, somewhat acute; apical lobe incurved, then strongly recurved, 5-angular, acute; margins convex-swollen. Column thin, 0.25 cm long; stelidia elongated, distinctly surpassing the anther, filiform-subulate, slightly sigmoid; column-foot making an obtuse angle with the ovary, the apex free, obtusely angled, slightly incurved, thick, 0.15 cm long. Anther cucullate, oblong, 0.08 cm long; base shortly obtusely trilobulate, median lobule from connective convex-thickened; apex abruptly recurved, truncate, papillose. Ovary obliquely obconical, 6-grooved, 0.23 cm long; pedicel terete, slightly more than 0.4 cm long, 0.1 cm above the base articulate. (After Smith, 1929)

Pseudobulbs light green suffused with red at the apex. Leaves dark green above lighter beneath. Inflorescence reddish violet. Floral bracts light brown. Sepals light purplish yellow, dotted dark purple; base lighter. Petals purple and pale yellow. Lip outside greyish lilac, inside dotted purple. Column and centre of flower indistinctly lilac-yellow. Ovary dark reddish violet.

Epiphyte in lower montane forest; 1420 m.

Malesia (New Guinea).

Papua (Indonesia); see map

Distribution of Bulbophyllum tapeinophyton in New Guinea

Intermediate growing epiphyte.


  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Dendrobieae
  • Subtribe Bulbophyllinae
  • Genus Bulbophyllum
  • Section Pedilochilus
  • Species Bulbophyllum tapeinophyton

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Bulbophyllum tapeinophyton

Bulbophyllum tapeinophyton J.J.Verm., Schuit. & de Vogel., as Pedilochilus humile J.J.Sm., floral analysis, drawing J.J. Smith, from Lam 1471

Bulbophyllum tapeinophyton

Bulbophyllum tapeinophyton J.J.Verm., Schuit. & de Vogel., as Pedilochilus humile J.J.Sm., floral analysis, drawing J.J. Smith, from Lam 1471