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Dendrobium diceras
Dendrobium diceras Schltr., Repert. Spec. Nov. Regni Veg. 16 (1919) 45.
Type: Kempter s.n. (Angriffshafen, Kaiser Wilhelmsland) (holo B, lost).
Synonyms:
- Sayeria diceras (Schltr.) Rauschert, Feddes Repert. 94 (1983) 466.
An erect epiphytic herb c. 40-45 cm tall; rhizome very short; roots filiform, flexuous. Pseudobulbs slender-fusiform, slightly plurisulcate, up to 37 cm long, 7-8 mm in diameter, commonly 3-leaved at apex. Leaves erect-spreading, coriaceous, somewhat obtuse, shortly contracted at the base, 10-12.5 by 2.3-3 cm. Inflorescences equalling or slightly overtopping the leaves, laxly 5-7-flowered; bracts ovate-lanceolate, acuminate, a third to a quarter the length of the ovary. Flowers glabrous, fleshy; ovary and pedicel glabrous, c. 7-8 cm long. Sepals oblong, obtuse, c. 1 cm long; laterals oblique, forming with the column foot an angular-semi-globose mentum c. 4 mm in diameter. Petals falcate-ligulate, obtuse, slightly dilated towards the apex. Lip curvate, clawed at base, flabellate above, 3-lobed, c. 8 mm long, 12 mm broad, with a subulate fleshy horn at the base; side-lobes obliquely quadrate, rounded in front; midlobe much smaller than the side-lobes, obtusely triangular fleshy; callus fleshy, 3-lobulate, the 3 proximal keels rugulose and obtuse. Column very short, obtuse at apex.
(after Cribb, 1983).
Flower colours not known.
New Guinea.
Papua New Guinea (near Vanimo, Sandaun Province).
Epiphyte (requirements not known).
Not recorded.
- Cribb, P.J. 1983. Kew Bull. 38: 299, map 2.
Dendrobium diceras Schltr. is similar to Dendrobium aberrans Schltr. and related species. It shares with them the somewhat globose mentum and clawed flabellate lip with a rugulose callus at the base. The type is destroyed but Schlechter's detailed description indicates that it is most similar to Dendrobium dendrocolloides J.J.Sm. and Dendrobium pleurodes Schltr. from which it differs in having a lip with a long subulate horn at the base and a small triangular obtuse midlobe.
(after Cribb, 1983).
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Dendrobium diceras
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