Species Information - Dendrobium irinae

Dendrobium irinae Ormerod, Checkl. Papuasian Orch. (2017) 214, 481 (fig.).

Type: Ames cult. s.n. (holo AMES).

Synonyms:

Epiphytes. Roots, rhizome, stem and leaves not seen. Inflorescence fragment 12.5 cm long; peduncle fragment 5.7 cm long; peduncular scale leaf 1, tubular, obliquely truncate, 1.3 cm long; rachis sublaxly 10-12 flowered, 6.8 cm long; floral bracts ovate to ovate-lanceolate, 0.45-0.7 by 0.2-0.4 cm, the lowest one possibly subvaginate, suborbicular-peltate, thinly papyraceous, 1.2 by 0.9 cm. Pedicel and ovary narrowly terete-club-shaped, c. 2 cm long. Median sepal ligulate-lanceolate, 2.2 by 0.5 cm; apex acute; 5-nerved. Lateral sepals ligulate from an obliquely dilated base; apex acute; 5-nerved, 2.15 by 0.875 cm, median 0.3 cm wide, mentum conical, c. 0.75 cm long, with subacute apex. Petals not twisted, narrowly ligulate-oblanceolate, 2.4 by 0.32 cm; apex acute; 3-nerved. Lip weakly 3-lobed, oblong­ lanceolate, 2.55 by 0.8 cm; keels 3. low and narrow, starting near the base of the hypochile and petering out on the lower half of the epichile in a low thickened area; hypochile c. 1 by 0.78 cm, with short, obtuse lateral lobes; epichile oblong-lanceolate, c. 1.6 by, 0.6 cm, margins undulate, with acute apex. Column semiterete, broadly 2-dentate, 0.35 cm long; column foot 0.7 cm long.
(after Ormerod, 2017)).

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