Eulophia bicallosa (D.Don) P.F.Hunt & Summerh., Kew Bull. 20 (1966) 60
Basionym: Bletia bicallosa
Rhizome horizontal, fusiform-oblong, 5-5.5 cm long, consisting of a few internodes. Inflorescence straight, elongated, laxly many-flowered, peduncle 27-85 cm long, covered with partly tubular, acute sheaths, above decreasing in size, 0.5-2.5 cm long, rachis 10-30 cm long. Floral bracts ovate-lanceolate, acuminate, 5-nerved, 0.5-1.3 cm long, up to 0.43 cm wide. Flowers 3 cm diameter. Median sepal erect, apex recurved, oblong-elliptic, acute, or acuminate, strongly convex, nerves 5, dorsally somewhat prominent, 1.37 cm long, 0.5 cm wide. Lateral sepals divaricate, apex channelled, recurved, obliquely lanceolate, acute, at the base narrowed, convex, nerves 5, dorsally prominent, in total 1.6 cm long, 0.53 cm wide. Petals obliquely erect, apex recurved, obliquely obovate-rhombic, obtuse, sometimes shortly apiculate, convex, laxly undulate, nerves 3, dorsally subprominent, 1.1 cm long, 0.68 cm wide. Lip attached to the column-foot, shortly spurred, 3-lobed, inside strongly veined, with 2 parallel, glabrous ribs which are somewhat raised at the rounded apex and clearly shorter than the lateral lobes, extending from the base to the middle of the lip, in between with smaller or hardly developed ribs, with 3 rows of small warts extending from the middle of the lip to the centre of the mid-lobe. Lip when flattened 1.4-1.5 cm long, 1.2 cm wide; spur broadly conical, dorsally compressed, truncate-rounded, 0.17 cm long, 0.27 cm wide; lateral lobes erect, obliquely subovate-triangular, obtuse, convex, overtopping the column; mid-lobe transversely ovate or almost round, emarginate, convex, undulate, 0.47-0.63 cm long, 0.75-0.83 cm wide. Column slender, somewhat curved, dorsally compressed, apex dilated, dorsally grooved, 0.6 cm long, lobes of the clinandrium minutely crenulate, inside with a rib, filament subulate. Stigma large, half round, strongly saccate. Column-foot making an obtuse angle with the column, at almost right angles to the ovary, straight, flat, broader than the column, 0.3 cm long. Ovary 6-grooved, 1 cm long; pedicel more slender than the ovary, 1 cm long. (After Smith, 1909, as Eulophia versteegii J.J.Sm.)
Colours: Sepals and petals with brownish purple lines, lip green outside, inside with pale violet markings.
Habitat: Terrestrial in lowland grassland. Altitude 40-150 m.
Flowering time in the wild: September, October.
Distribution: Malesia (Peninsular Malaysia, Sumatra, Java, New Guinea, The Philippines), Asia (trop.), Australia.
Distribution in New Guinea: Papua (Indonesia); Papua New Guinea. See map: 293-8M.JPG
Cultivation: Warm growing terrestrial, keep in light position.