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Bulbophyllum triclavigerum

Bulbophyllum triclavigerum

Bulbophyllum triclavigerum J.J.Sm., Repert. Spec. Nov. Regni Veg. 12 (1913) 402

Type: Gjellerup 1238

Rhizome elongated, pendulous, angular-ribbed; entirely covered with tubular, prominently veined, soon disintegrating sheaths. Roots partly appressed to the rhizome. Pseudobulbs c. 1.5-2.2 cm apart, spirally arranged, appressed to the rhizome, obliquely oblong-cylindrical, soon with many small longitudinal ribs, 0.75-1.25 by 0.4-0.54 cm; 1-leaved. Leaf ovate, thick fleshy, rigid, c. 1.7-2.75 by 1.2-1.55 cm; base rounded, shortly and abruptly narrowly conduplicate-contracted, above convex with a thin longitudinal groove; apex pointed, rectangularly subobtuse; underneath flat. Inflorescences 1-flowered, from the nodes of the rhizome; peduncle very short, 0.3 cm long, with a few large, tubular, thinly membranous sheaths. Floral bract much longer than the ovary, tubular, obtuse, 0.3 cm long; apex concave. Flower very small, somewhat open, 0.63 cm long; the sepals parallel. Median sepal 0.68 by slightly over 0.2 cm at the base; basal half subtriangular, concave, thin, long linear-oblong-contracted, obtuse, dorsally convex; to the top fleshy-thickened and inside channelled; nerves 3, near the apex merging. Lateral sepals forming a short, obtuse-angled mentum, 0.67 by 0.24 cm at the base; basal 1/4th obliquely triangular, concave; top part contracted linear-lanceolate, obtuse, fleshy-thickened, subterete, channelled, 0.37 cm long; nerves 3, near the apex merging. Petals very small, parallel, appressed to the column, 5-angular, subobtuse or subacute, 1-nerved, 0.15 by 0.1 cm. Lip mobile, strongly curved, oblong, channelled, 3-nerved, inside 3-ribbed, when flattened 0.24 by 0.1 cm; in basal part the sides erect; margins recurved; 1/3 upper part strongly undulate; apex recurved, obtuse; underneath papillose, keels all vanishing to the base, laterally in the middle papillose, above vanishing, median to the apex extended. Column 0.17 cm long; clinandrium deeply concave, filament triangular-apiculate; stelidia much longer than the anther, subulate, falcate, upper margin at the base with a tooth; stigma inversely triangular; column-foot making an obtuse angle with the ovary, incurved, its apex somewhat dilated, with 2 separate divergent, angled, obtuse teeth, 0.13 cm long. Anther high cucullate, orbicular; apex extended in a quadrangular, obtuse appendage; connective ribbed-thickened. Pollinia laterally compressed, triangular, outside convex. Ovary 6-grooved, 0.16 cm long. (After Smith, 1916)


Leaves and flower brown-red.

Epiphyte in montane forest; 1900 m.

Malesia (New Guinea).

Papua (Indonesia); see map

Distribution of Bulbophyllum triclavigerum in New Guinea

Cool growing epiphyte.

May.

  • Smith, J.J., Nova Guinea 12, 4 (1916) 393, t. 143, fig. 270
  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Dendrobieae
  • Subtribe Bulbophyllinae
  • Genus Bulbophyllum
  • Section Oxysepala
  • Species Bulbophyllum triclavigerum

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Bulbophyllum triclavigerum

Bulbophyllum triclavigerum J.J.Sm. aff., flower, oblique front view, photo E.F. de Vogel, Leiden cult. 20030378

Bulbophyllum triclavigerum

Bulbophyllum triclavigerum J.J.Sm. aff., plant habit, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 370

Bulbophyllum triclavigerum

Bulbophyllum triclavigerum J.J.Sm. aff., flower, oblique lateral view, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 370

Bulbophyllum triclavigerum

Bulbophyllum triclavigerum J.J.Sm. aff., flower detail, centre of flower, oblique lateral view, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 370

Bulbophyllum triclavigerum

Bulbophyllum triclavigerum J.J.Sm. aff., flower detail, column and lip, lateral view, lateral sepal and petal removed, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 370

Bulbophyllum triclavigerum

Bulbophyllum triclavigerum J.J.Sm. aff., plant habit, photo E.F. de Vogel, Leiden cult. 20030378

Bulbophyllum triclavigerum

Bulbophyllum triclavigerum J.J.Sm. aff., stem part with flowers, photo E.F. de Vogel, Leiden cult. 20030378

Bulbophyllum triclavigerum

Bulbophyllum triclavigerum J.J.Sm. aff., flower, oblique front view, photo E.F. de Vogel, Leiden cult. 20030378

Bulbophyllum triclavigerum

Bulbophyllum triclavigerum J.J.Sm. aff., flower, oblique front view, photo E.F. de Vogel, Leiden cult. 20030378

Bulbophyllum triclavigerum

Bulbophyllum triclavigerum J.J.Sm. aff., flower, oblique lateral view, photo E.F. de Vogel, Leiden cult. 20030378

Bulbophyllum triclavigerum

Bulbophyllum triclavigerum J.J.Sm. aff., opening flower, oblique lateral view, photo E.F. de Vogel, Leiden cult. 20030378

Bulbophyllum triclavigerum

Bulbophyllum triclavigerum J.J.Sm., floral analysis, drawing J.J. Smith, from Gjellerup 1238

Bulbophyllum triclavigerum

Bulbophyllum triclavigerum J.J.Sm., habit, drawing Natadipoera, from Gjellerup 1238