Species Information - Dendrobium dockrillii

Dendrobium dockrillii Ormerod, Checkl. Papuasian Orch. (2017) 195, 474 (fig.).

Type: NGF 34022 (Dockrill) (holo A; iso BRI, CANB, K, L, LAE).

Synonyms:

Epiphytes, herbaceous. Roots and rhizome not seen. Stem slender, laxly leafy, compressed elliptic in section, fragment 14-15 by 0.1-0.2 cm, 0.05-0.10 cm thick; exposed part of internodes 0.3-0.8 cm long. Leaves linear-lanceolate, thin, 5.5-11.6 by 0.22-0.4 cm; leaf sheaths tubular, smooth, 1.1-2.3 cm long, its apex with a triangular, 0,1-0.25 cm long lobe with acute apex; apex with 2 minute obtuse lobes differing 0.1-0.3 cm in length. lnflorescence 2-flowered; peduncle 0.5 cm long; basal inflorescence scales: 1st transversely oblong, 0.1-0.2 by 0.2-0.23 cm, 2nd semi-elliptic, 0.55 by 0.18-0.2 cm, with obtuse apex; 3rd narrowly oblong, thin, papery, to 0.6 by 0.07 cm, with subacute apex. Pedicel and ovary club-shaped, 0.1 cm long. Median sepal linear-lanceolate, 3.8 by 0.4 cm; apex acute; 7-nerved. Lateral sepals in lower half obliquely ovate-lanceolate, upper half linear-lanceolate, 3.6 by 0.85 cm; mentum broadly rounded, 0.75 cm long. Petals linear-lanceolate, 3.5 by 0.16 cm; apex acute; 3-nerved. Lip 3-lobed, 1.4 cm long; hypochile 0.5 by 0.55 cm; inside with plate-like ridges and triangular to lanceolate projections; lateral lobes lanceolate to linear-lanceolate, 0.2-0.22 cm long (along inside margin), with acute apex, keels 3, plate-like, the outer two about as long as the hypochile, with irregularly angular upper margins, the median keel plate-like, higher than the lateral ones, gently curved above; epichile broadly clawed, dilating into an ovate-lanceolate lobe, 0.9 by 0.6 cm, its margin irregularly dentate and with long laciniae, in basal half upper surface with few scattered hair and irregularly dentate lamellae, in apical half upper surface with an oblong dense patch of long hair-like projections, median keel continuing as a thinner, lower keel that ends on the middle of the epichile in two linear-lanceolate projections, apex of epichile with parallel margins, its tip acute. Column semiterete, 0.45 cm long (without anther, in apical third each lower margin with a tiny, triangular, obtuse lobule; column foot gently incurved, concave, 0.67 cm long, inside median with a small convexity.
(after Ormerod, 2017)).

---