Species Information - Dendrobium ischnopetalum

Dendrobium ischnopetalum Schltr., in K.Schum. & Lauterb., Nachtr. Fl. Deutsch. Schutzgeb. Südsee (1905) 153; Repert. Spec. Nov. Regni Veg. Beih. 21 (1923) t. 160, fig. 596.

Type: Schlechter 14631 (holo B, lost; iso K).

Synonyms:

• Diplocaulobium ischnopetalum (Schltr.) Kraenzl., in Engl.

Rhizome short, roots elongated, filiform, flexuose, glabrous. Pseudobulbs crowded, 1-leaved, slender, to the base ovoid-widened, 3-13 by 1.3 (at the base) to 0.2-0.3 cm (near the apex). Leaves linear to linear-oblong, 9-12 by 0.5-1 cm, apex obtuse, unequally bilobulate, coriaceous. Inflorescences arising in succession from the apex of the pseudobulb, 1-flowered. Pedicel and ovary 1.5-2 cm long, slender, glabrous. Flower resupinated, c. 6 cm wide. Dorsal sepal lanceolate, to the apex filiform-elongated, 3 cm long. Lateral sepals obliquely lanceolate, to the apex filiform-elongated, to the base much widened, 3 cm long; mentum obtuse. Petals linear, to the apex filiform-elongated, c. 2.8 cm long. Lip weakly 3-lobed in the middle, 1.2 by 0.6 cm (across the midlobe), with two keels extending from the base to a little below the apex, initially parallel, slightly diverging from the middle onwards, then abruptly converging distally, with a low ridge in between; lateral lobes short, obtuse; midlobe suborbicular with an obcuneate claw, apex abruptly acuminate. Column short, clinandrium with an acute median tooth; column-foot well-developed. Anther subglobose-cucullate, glabrous, in front truncate-sublobulate.
(after Schlechter, 1905).

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