Species Information - Dendrobium fruticosum

Dendrobium fruticosum Schuit. & de Vogel, Malesian Orchid J. 4 (2009) 104, fig. 5

Type: Eyma 5226 (holo L; isoAMES, BO, K)

Synonyms:

Rhizome much elongated, ascending-erect, to at least 35 cm long, sparsely branching, rooting mainly at the base. Pseudobulbs 3–5 cm apart, narrowly cylindrical, 3–5.5 by c. 0.25 cm, 1-leaved. Leaf narrowly (elliptic-)oblong, 2.5–3.5 by 0.45–0.7 cm; base cuneate-subpetiolate; apex obtuse, minutely bilobulate, mucronate, mucro slightly longer than the lobules. Inflorescences both adaxial and abaxial, solitary. Main basal bract tubular, 0.3–0.4 cm long. Peduncle 0.4 cm long. Median sepal patent, narrowly triangular-ovate, 0.38 by 0.2 cm; apex obtuse; 3-nerved. Lateral sepals 0.26 by 0.26 cm; free part broadly triangular-ovate; apex obtuse, patent; 3-nerved. Mentum cylindrical, 0.53 cm long; apical closed part c. 0.15 cm long and abruptly bent forwards through a right angle, its apex obtuse. Petals linear-elliptic, 0.38 by 0.09 cm; base decurrent on the column-foot for c. 0.1 cm, porrect to patent, 1-nerved; margins entire; apex obtuse. Lip 3-lobed, spathulate, 0.64 cm long; hypochile 0.44 cm long, of which c. 0.15 cm adnate to the column foot, 0.29 cm wide across the flattened lateral lobes, papillose, the lateral lobes entire, narrowly oblong, 0.14 by 0.04 cm, the apex obtuse; epichile fleshy, broadly transversely elliptic, 0.2 by 0.29 cm; margins entire; apex slightly emarginate, with a short obtuse mucro in the sinus; callus narrowly 3-angular in outline, indistinctly 3-ribbed, extending from the base of the epichilium to the apex, papillose. Column glabrous, 0.13 cm long; wings short bidentate; clinandrium entire, margin in the middle with a low tooth; column-foot densely pilose, 0.53 cm long. Anther cucullate, 0.05 by 0.09 cm; base emarginate; apex truncate, papillose; pollinia 0.06 cm long. Ovary and pedicel glabrous, 1.6–1.8 cm long, 6-winged. Fruit not seen.
(after Schuiteman & de Vogel, 2009)

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