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Coelogyne susanae

Coelogyne susanae

Coelogyne susanae P.J.Cribb & B.A.Lewis, Kew Bull. 46 (1991) 317

Type: Wickison 40 (holo K)

Roots 0.2-0.3 cm diam. Rhizome 0.95-1.5 cm thick. Scale-covered part of the inflorescence-bearing young shoot 10-11.5 cm long. Pseudobulbs up to 2 cm apart, oblongoid, obtusely 4-angled when fresh, 6.8-17 cm long. Leaves two per pseudobulb, stiff herbaceous. Petiole 3-7 cm long. Blade linear-lanceolate, 32-45 by 6.5-8.7 cm; apex acuminate to cuspidate; main nerves 5-7. Inflorescence synanthous with the partially to entirely developed leaves, 2-18-flowered. Peduncle during flowering at the base enclosed by the petiole and scales of the young shoot, 7-41.5 cm long. Rachis (sub)erect, zigzag, 2.5-32 cm long; internodes 1.4-3.2 cm long, distinctly curved, incrassate, each with a swollen base bearing a flower. Floral bracts ovate-lanceolate, 4.1-6.7 by 1.4-1.5 cm, deciduous; apex acute; nerves 11-13. Flowers opening in succession, fragrant. Pedicel 0.5-0.9 by 0.25-0.32 cm; ovary 1.4-2.8 by 0.5-0.75 cm. Median sepal ovate-oblong, 5.0-6.7 by 1.7-2.3 cm; apex obtuse; nerves 13-15, the midrib a rounded keel 0.05-0.08 cm high. Lateral sepals ovate-lanceolate, 5.6-6.2 by 1.6-1.95 cm; apex acute; nerves 13-17, the midrib a rounded keel 0.05-0.08 cm high. Petals slightly recurved, 5.0-6.7 by 0.35-0.5 cm; apex acuminate; nerves 3, midrib centric. Lip 4.0-5.5 by 3.1-3.6 cm, nerves 15-19. Hypochile when flattened 1.8-2.3 by 3.1-3.6 cm; base attached over 1.6-2.7 cm, not saccate; lateral lobes in front obtuse, extending 0.1-0.4 cm in front, front margin at the base slightly irregularly erose, with obtuse sinus: apex not saccate; keels 11-13, each consisting of a row of irregularly shaped, elongate warts 0.1-0.2 cm high with papillae but without hairs on the basal quarter of the hypochile and a slightly elevated row with irregularly shaped horizontal ridges 0.12-0.2 cm high with papillae but without hairs on the apical parts of the hypochile, not widened along the crest, the 5 median keels parallel at the base of the hypochile and there 0.05-0.1 cm high, diverging on the apical half of the epichile, converging again on the basal half of the epichile, the 3 median keels developed on the hypochile and the basal half of the epichile, the 6-8 lateral keels only developed on the apical half of the hypochile, lower than the median keels. Epichile convex, when flattened elliptic to ovate to orbicular, 2.1-3.7 by 1.9-2.1 cm, with a broad, relatively long claw 0.02-0.07 cm in cross section; base broadly attached over 1.2-1.55 cm; apex retuse, slightly raised, with an acute apex with warts 0.03-0.05 cm high; margin slightly cruse, recurved; sides not to slightly pronounced as lateral lobes, with a few warts 0.008-0.1 cm high, centre 0.04-0.09 cm in cross section, margin 0.02-0.025 cm in cross section: keels 7-9, the 2 longest ones ending 1.2-1.5 cm from the apex of the epichile, on the claw identical with the keels on the hypochile, on the blade changing into a row of irregularly shaped, elongate warts with papillae but without hairs. Column 2.25-2.35 by 0.8-1.05 cm; hood with truncate apical margin, laterally notched where the wings are attached and above, the middle part rounded, recurved. Anther oblong bell-shaped in outline, 0.55-0.6 by 0.59-0.6 cm, near the place of attachment with a little elongate projecting apex; apex without notch. Pollinia obliquely ellipsoid, 0.25-0.32 by 0.15-0.17 cm; caudicle flattened, broadly triangular in outline, 0.15-0.18 by 0.15-0.35 cm. Stigma 0.4-0.6 by 0.6-0.7 cm; margin apex notched; rostellum 0.38-0.6 by 0.6-0.7 cm, with an obtuse apex with or without notch. Fruit not seen. (After Gravendeel and De Vogel, 1999).

Sepals and petals pale yellow green to creamy green with an orange or red brown lip and a white or pale yellow apex. Column whitish, brown on ventral surface.

Epiphyte in montane forest.

Malesia (New Guinea), Solomon Isl.

Papua New Guinea (New Britain)

Intermediate growing epiphyte.

Not known

  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Arethuseae
  • Subtribe Coelogyninae
  • Genus Coelogyne
  • Section Speciosae
  • Species Coelogyne susanae
  • Lewis, B.A. & P.J. Cribb, Orchids of the Solomon Islands and Bougainville (1991) 90, fig 18, pl. 5D
  • Gravendeel, B. & E.F. de Vogel, Blumea 44 (1999) 305, fig. 12, map 3, pl. 1l, 2d

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Coelogyne susanae

overview picture

Coelogyne susanae

Coelogyne susanae P.J.Cribb & B.A.Lewis, flower, photo N.E.G. Cruttwell, based on Cruttwell (9/90, PNG, Bougainville, Togerao)

Coelogyne susanae

Coelogyne susanae P.J.Cribb & B.A.Lewis, drawing N.H.S. Howcroft 113, from Crown Prince Ra.