Species Information - Dendrobium rhipidolobum

Dendrobium rhipidolobum Schltr., in K.Schum. & Lauterb., Nachtr. Fl. Deutsch. Schutzgeb. Südsee (1905) 151; Repert. Spec. Nov. Regni Veg. Beih. 21 (1923) t. 153, fig. 573.

Type: Schlechter 14116 (holo B, lost; iso BM, BR, K, P).

Synonyms:

• Flickingeria rhipidoloba (Schltr.) A.D.Hawkes, Orchid Weekly 2 (1961) 458.
• Desmotrichum rhipidolobum (Schltr.) A.D.Hawkes, Lloydia 20 (1957) 127.
• Ephemerantha rhipidoloba (Schltr.) P.F.Hunt & Summerh., Taxon 10 (1961) 106

Rhizome to 50 cm, pendulous, branching, stem-like, yellowish, roots elongated, filiform, flexuose, glabrous. Pseudobulbs widely spaced, 1-leaved, cylindrical, angled, 5-7 by 0.6-0.8 cm, rugose. Leaves oblong-ligulate, 9-15 by 2-3.5 cm, apex subacute, minutely bilobulate, coriaceous. Inflorescences arising from the apex of the pseudobulb, 1-flowered. Pedicel and ovary 0.8 cm long, glabrous. Flower 1.5-2 cm wide, ephemeral, fragrant. Dorsal sepal lanceolate to oblong, 0.9-1.1 cm long, apex acute to acuminate. Lateral sepals lanceolate, widened at the base, 0.9-1.1 cm by 6.3-7.3 mm (at the base), apex acute; mentum 0.4-0.5 cm long, obtuse. Petals obliquely linear-lanceolate to rhombic lanceolate, 0.87-1 by 2-3.5 mm, apex acute. Lip 3-lobed below the middle, 1.2-1.4 by 0.53-0.8 cm (across the lateral lobes), cuneate at the base, with 2 or 3 parallel keels extending from the base to a little below the apex, on the midlobe undulate; lateral lobes short, obliquely oblong to triangular-subfalcate, erect-patent, obtuse to subacute; midlobe cuneate-flabellate, 0.5-0.7 by 0.7-0.9 cm, with the lateral margins strongly undulate-plicate and irregularly lobulate, apex truncate to broadly retuse, apiculate. Column 0.27-0.35 cm long, clinandrium minutely denticulate, with a slightly larger tooth in the middle; column-foot 0.4-0.5 cm long. Anther rounded, in front emarginate, glabrous or ciliolate.
(after Schlechter, 1905).

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