Home
Plants with subterranean or sometimes partly aerial corms/pseudobulbs; leaves thick-tissued to succulent, mature at anthesis, up to 650 x 20 mm; flowering stem 400-600 (-900) mm tall. Inflorescences becoming elongate and lax during anthesis, 10-30-flowered. Flowers: sepals pale green, petals yellow, lip yellow, side lobes with purple lines, crests deep yellow. Sepals reflexed; median sepal (8-) 11-13 (-20.6) mm long, elliptic, acute to acuminate; lateral sepals similar. Petals rotund-obtuse, spreading, 9.7-22.7 mm long. Lip 3-lobed, crests consisting of broad fleshy ridges, thickest on the convex part of the midlobe; sides of the midlobe somewhat deflexed, convex adaxially in the middle, apex incurved; side lobes erect, united with the mentum and the gynostemium base; mentum about 2h the length of the gynostemium; spur shortly conical, 1-3 mm long. Gynostemium 5-8 mm long.
Terrestrial, robust herb, with subterranean or partly aerial pseudobulbs, 0.4-0.9 m high. Leaves erect, somewhat succulent, 650 x 20 mm, mature at anthesis. Inflorescence elongate, lax, 10-30-flowered. Flowers with sepals pale green, petals yellow, lip yellow, side lobes with purple lines, crests deep yellow. Sepals reflexed; median sepal 11-13 mm long, elliptic, acute; lateral sepals similar. Petals rotund-obtuse, spreading, 10-23 mm long. Lip 3-lobed, crests with broad fleshy ridges on convex portion of midlobe, sides of midlobe deflexed, side lobes erect, adnate to mentum; mentum shorter than gynostemium; spur conical, 1-3 mm long. Gynostemium 5-8 mm long. Flowering time Oct.-Jan.
Geophyte mostly to 60 cm, with subterranean or partly exposed corms/pseudobulbs. Leaves ± succulent, fully developed at flowering. Flowers few to many, yellow, median sepal 11-13 mm long, lip crests of broad, fleshy ridges, spur conical, 1-3 mm long.
Terrestrial herb, up to 0.9 m high. Subcylindrical part of spur shorter than 1 mm. Midlobe of lip scarcely incurved, so that central convexity lies distant from column. Flowers with pale green sepals, petals and lip yellow.
Lip 12–24 mm long, difficult to flatten, 3-lobed; side lobes erect, attached to column at base; mid-lobe 10–20 mm long, convex with a crest of 3 rugulose, fleshy ridges; spur conical, 1–4 mm long.
Flowers variable in size; sepals green, sometimes tipped with brown, petals and lip bright yellow, the lip with red veins on the side lobes; column pale green.
Leaves 3–6, 15–65 × 0.6–3 cm, fleshy, not plicate, narrowly oblanceolate, absent or just starting to appear at flowering time.
Perennating organs subterranean, tuberous, 4–6 × 2.5–4 cm, irregularly conical; roots 1.2–3 mm in diameter, white.
Inflorescence laxly many-flowered; scape stout, purplish, with several sheaths.
Petals 11–20 × 8–22 mm, spreading, elliptic-ovate to suborbicular, obtuse.
Sepals 5–11 × 2–5 mm, ovate or elliptic, apiculate, reflexed.
Bracts 4–14 mm long, lanceolate.
Pedicel and ovary 12–23 mm long.
Terrestrial herb to 150 cm tall.
Column 4–6 mm long.
An orchid.
