Curcuma bicolor, Curcuma bicolor
Herb, 40-60 cm tall. Leaf elliptic, glabrous, base rounded to cordate, apex acuminate, 18-30 x 8-15 cm. Inflorescence terminal, 8-20 cm tall; bracts lanceolate, glabrous. Flower red; staminodes ovate, orange-yellow with red apex, 15x8 mm. Labellum 3-lobed, mid-lobe apex deeply bifid, orange-yellow with red apex, 16x12 mm. Anther 8 mm long; spurs conical, point forwards, apex acuminate, 3 mm long; crest thick, blunt, 1.5x1.5 mm. Ovary barrel-shaped, densely hairy, 5 mm long; stigma laterally open, ciliate, 1 mm wide. [1]
References
- , “New Curcumas from South-east Asia”, The New Plantsman, vol. 8, no. 4, pp. 207-217, 2002.
Main rhizome ovoid, white inside. Leafy shoot 40-60 cm tall; leaf-sheath glabrous, 12-30 cm long; ligule bi-lobed, ciliate, 3-8 mm long; petiole slender, glabrous, 2-25 cm long; blade elliptic, glabrous on both surfaces, base rounded to cordate, apex acuminate. Inflorescence terminal; bracts lanceolate, glabrous, apex acuminate. Calyx tubular, apex 3-teethed, densely hairy, split down one side 9 mm. Corolla tube hairy, 38 mm long; lobes 15 x 5-7 mm; dorsal one hooded, hairy at tip, apex acute-mucronate; lateral ones shallow concave, apex rounded, glabrous. Staminodes ovate, orange-yellow with red apex, apex obtuse, 15x8 mm. Labellum 3-lobed, mid-lobe apex deeply bifid, orange-yellow with red apex, glandular hairy on either side of midband, 16x12 mm. Anther spurs conical, point forwards, apex acuminate, 3 mm long; crest thick, blunt, 1.5x1.5 mm. Ovary densely hairy; stigma laterally open, ciliate.
Endemic to northern Thailand.
Similar to Curcuma stenochila Gagnep. but differs in staminodes and labellum red with yellow apex.
Subgenus Ecomata