Species Information - Dendrobium hymenocentrum

Dendrobium hymenocentrum Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912) 567; 21 (1923) t. 191, fig. 715.

Type: Schlechter 20000 (holo B, lost; iso AMES, BO, E, G, K, L, NSW, S).

Synonyms:

• Aporum hymenocentrum (Schltr.) Rauschert, Feddes Repert. 94 (1983) 439.
• Ceraia hymenocentrum (Schltr.) M.A.Clem., Telopea 10, 1 (2003) 291

Rhizome very short, roots elongated, filiform, flexuose, glabrous. Stems crowded, erect, laterally flattened, with one to three of the basal internodes swollen, often 8-ribbed, up to 60 cm long, in basal half or more densely many-leaved, bare in apical part. Leaves bilaterally flattened, lanceolate-ligulate, falcate, 2.5-5.5 by 0.5-0.7 cm, apex acute, coriaceous. Inflorescences lateral from the upper part of the stem, fasciculate, appearing in succession, 1-flowered. Pedicel and ovary 1 cm long, slender, glabrous. Flowers resupinated, c. 2 cm long, thin-textured. Dorsal sepal triangular-ovate, 0.9 cm long, apex acute to apiculate. Lateral sepals obliquely triangular-ovate, much widened at the base, 0.9 cm long, apex acute to apiculate; mentum spur-like, cylindrical, c. 1.6 cm long, obtuse. Petals obliquely oblong, c. 0.8 cm long, apex obtusely apiculate. Lip 3-lobed in front, 2 by 1.1 cm, with a short claw at the base, cuneate in basal part, with a straight narrow keel extending from the base to just below the base of the midlobe; lateral lobes rounded, minutely undulate-subcrenulate; midlobe surpassing the lateral lobes, incised, minutely apiculate. Column very short, clinandrium weakly 3-lobulate; column-foot ligulate, 1.6 cm long, thin-textured. Anther helmet-shaped, glabrous, in front truncate.
(after Schlechter, 1912).

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