Dendrobium vonroemeri

Dendrobium vonroemeri J.J.Sm., Bull. Dép. Agric. Indes Néerl. 39 (1910) 12; Nova Guinea 8, 3 (1911) 565, t. 92C.

Type: Römer, von 1329 (holo BO).

Stems slender, laterally compressed, subflexuose, internodes c. 1 cm long. Leaf sheaths tubular, longer than the internodes, 0.17 cm wide, laterally compressed, truncate, verrucose-rugulose, with tiny pits. Leaves erect-patent, lanceolate, 2.2-2.3 by 0.43 cm, carnose, grooved above, transversely rugulose, base half twisted, very shortly subpetiolate, apex unequally bilobulate. Inflorescences arising from the leaf axils, 1-flowered, very short, at the base enveloped in c. 0.37 cm long tubular scales; peduncle 0.13 cm long. Floral bract minute. Pedicel and ovary 0.35 cm long, clavate. Flower c. 0.8 cm long. Dorsal sepal oblong, 0.63 cm by 2.4 mm, concave, 5-nerved, apex obtuse. Lateral sepals ovate-oblong, falcate, 0.5 cm long, to the apex of the mentum 0.78 cm long, 2.4 mm wide, concave, 5-nerved, apex obtuse; mentum backwards pointing, slightly recurved, at an acute angle to the ovary, closed in front by the connate margins of the lateral sepals, 0.23 cm long, broadly obtuse. Petals narrowly oblong, falcate, 0.55 cm by 1.7 mm, concave, 3-nerved, apex obtuse. Lip 3-lobed near the apex, erect, lightly sigmoid, cuneate-spathulate, 0.58 by 0.17 cm, above the middle with an oblong callus with free margins; lateral lobes erect, broadly obliquely triangular, concave, erose-serrate; midlobe 5-angular-semiorbicular, 0.7 by 1.7 mm, subacuminate. Column dorsally compressed, 0.25 cm long, stigma suborbicular; column-foot at an acute angle to the ovary.
(after Smith, 1911).

Colours: Flower white.

Habitat: Terrestrial in open montane vegetation. Altitude 2570 m.

Flowering time in the wild: November.

Distribution: New Guinea (endemic).

Distribution in New Guinea: Papua (Jaya Wijaya and Jayapura Regencies).

Cultivation: Cool growing terrestrial.