Species Information - Dendrobium tuberculatum

Dendrobium tuberculatum J.J.Sm., Repert. Spec. Nov. Regni Veg. 12 (1913) 31; Nova Guinea 12, 4 (1916) 285, t. 104, fig. 182.

Type: Bogor cult. (Lorentz Exp., Rachmat 59) s.n. (holo BO).

Synonyms:

• Diplocaulobium tuberculatum (J.J.Sm.) P.F.Hunt & Summerh., Taxon 10 (1961) 109.

Rhizome creeping, branching. Pseudobulbs at an acute angle to the rhizome, 1-1.5 cm apart, 1-leaved, elongated ovoid-conical, 6-7 angled, 2.2-2.75 by 0.65-0.78 cm. Leaves erect, lanceolate, 4-6.5 by 1-1.4 cm, coriaceous, apex obtuse, bilobulate. Inflorescences arising in fascicles of 3-9 from the apex of the pseudobulb, 1-flowered; spathe 0.65 cm long. Pedicel 1.25-1.4 cm long; ovary 0.2 cm long, 6-grooved, subverruculose. Flower c. 1.5-1.9 cm across. Sepals and mentum sparsely verrucose outside. Dorsal sepal triangular-lanceolate, 1 cm by 3 mm, apex narrowly obtuse. Lateral sepals obliquely triangular-lanceolate, 1 cm by 5.6 mm, apex acute; mentum 0.45 cm long, obtuse. Petals recurved, linear-spathulate-lanceolate, 0.9 cm by 1 mm, apex acute. Lip 3-lobed, 1 by 0.38 cm, with 3 keels; free part of lateral lobes short, triangular, 0.6 mm long; midlobe oblong-subobovate-elliptic, 0.55 by 0.33 cm, undulate, papillose, apiculate. Column 0.15 cm long, stelidia dentate, filament subulate; column-foot 0.43 cm long, outside with 2 longitudinal rows of 8-12 small warts.
(after Smith, 1916).

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