Epiphytic, epilithic or terrestrial, glabrous herb. Stem ascending, 10-40 cm long; internodes winged or ridged below nodes, green or reddish. Leaves alternate; petiole 0.3-3 cm long, deeply grooved or winged; blade fleshy membranous or coriaceous, green above, often reddish brown beneath, elliptic or broadly elliptic or ovate, 4.5-13 x 2-5 cm, margin may be ciliate towards apex, apex acuminate, base acute, glabrous; 3-5(-7)-pli-or palmately veined. Inflorescence terminal or axillary, single or few together, erect; peduncle not slender, 0.3-1.5 cm long, green; spike 6-14 cm long, yellow; floral bracts rounded, glabrous, slightly glandular. Fruits laterally attached, globose-ovoid, reddish brown, apex oblique with subapical stigma.
Epiphytic, epilithic or terrestrial, glabrous herb. Stem ascending, 10-40 cm long; internodes winged or ridged below nodes, green or reddish. Leaves alternate; petiole 0.3-3 cm long, deeply grooved or winged; blade fleshy membranous or coriaceous, green above, often reddish brown beneath, elliptic or broadly elliptic or ovate, 4.5-13 x 2-5 cm, margin may be ciliate towards apex, apex acuminate, base acute, glabrous; 3-5(-7)-pli-or palmately veined. Inflorescence terminal or axillary, single or few together, erect; peduncle not slender, 0.3-1.5 cm long, green; spike 6-14 cm long, yellow; floral bracts rounded, glabrous, slightly glandular. Fruits laterally attached, globose-ovoid, reddish brown, apex oblique with subapical stigma.