Species Information - Dendrobium potamophilum

Dendrobium potamophilum Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912) 600; 21 (1928) t. 201, fig. 758.

Type: Schlechter 16482 (holo B, lost; iso AMES, BO, G, L, NSW, NY).

Synonyms:

• Grastidium potamophilum (Schltr.) Rauschert, Feddes Repert. 94 (1983) 452.

Rhizome very short, roots elongated, filiform, flexuose, glabrous. Stems crowded, erect, unbranched, 20-25 cm long, many-leaved. Leaf sheaths entirely covering the stem. Leaves erect-patent, oblong-ligulate, 4-7 by 1-1.8 cm, apex obtusely and unequally bilobulate. Inflorescences arising laterally from the stem, peduncle very short, 2-flowered; spathe short, laterally compressed, obtuse. Pedicel and ovary 0.8 cm long, glabrous. Flowers c. 2.5 cm across. Dorsal sepal oblong-ligulate, 1.4 cm long, glabrous, apex subacute. Lateral sepals falcate, a little widened at the base, 1.4 cm long, apex subacute; mentum short, obtuse. Petals subfalcate-ligulate, slightly widened to the apex, a little shorter than the sepals, apex obtuse. Lip 3-lobed in the middle, 0.7 by 0.6 cm, in basal half with sparse wart-like papillae, with a median strip of papillae extending from the base of the lip to below the apex of the midlobe; lateral lobes falcate-oblong, interior margin denticulate, apex obtuse; midlobe slightly longer, broadly ovate, margin incised-dentate, apex apiculate. Column short, clinandrium 3-lobulate, the lobules rounded; column-foot concave. Anther rounded-cucullate, in front truncate.
(after Schlechter, 1912).

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