Species Information - Dendrobium jadunae

Dendrobium jadunae Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912) 463; 21 (1923) t. 155, fig. 583.

Type: Schlechter 19332 (holo B, lost; iso G, L, S).

Synonyms:

• Diplocaulobium jadunae (Schltr.) A.D.Hawkes, Lloydia 20 (1957) 129.

Rhizome to 15 cm long, creeping, roots elongated, filiform, flexuose, glabrous. Pseudobulbs closely spaced, 1-leaved, cylindrical-ovoid, 6-angled, with its base appressed to the rhizome, ascending, 0.8-1.3 by 0.5-0.8 cm. Leaves ligulate, 1.3-1.8 by 0.35-0.55 cm, apex obtuse, minutely bilobulate, coriaceous. Inflorescences arising in succession from the apex of the pseudobulb, 1-flowered; spathe laterally compressed, c. 5 mm long, obtuse. Pedicel and ovary 1.2 cm, slender, terete, glabrous. Flower resupinate, c. 2.5 cm across. Dorsal sepal lanceolate, narrowed to the apex, 1.2 cm long, apex obtuse. Lateral sepals falcate, oblique, widened at the base, 1.2 cm long, apex obtuse; mentum conical, c. 4.5 mm long, obtuse. Petals linear, subfalcate, somewhat narrowed in the middle, c. 1 cm long, apex subacute; glabrous. Lip 3-lobed in the middle, 1.3 by 0.4 cm, cuneate-ligulate at the base, with 3 keels, the lateral keels extending from the base to halfway the midlobe, converging in the middle, then diverging again, the central keel extending from the base of the midlobe to a little below its apex; lateral lobes short, triangular, acute; midlobe elliptic, c. 6.5 mm long, margins slightly undulate, subacuminate. Column short, glabrous, clinandrium 3-lobulate, the lateral lobules small, irregularly sparsely dentate, the median longer; column-foot c. 4.5 mm long. Anther globose-cucullate, rounded in front, glabrous.
(after Schlechter, 1912).

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