Tuber whitish, globose to ellipsoid, 5-20 mm in diam. Leaf abaxially green or dark purple, adaxially pale to dark green and sometimes with purple or yellowish blotches, orbicular-cordate, 7.5-11 × 10-13 cm, plicate, pubescent primarily on veins, many veined, base cordate, apex acute; petiole-like stalk erect, purple or dark green, 1.5-3 cm. Inflorescence 12-20 cm, 2-flowered; peduncle dark green or purple, with 2 or 3 tubular sheaths; floral bracts lanceolate, 5-7 × 1-2 mm, apex acuminate. Flowers nodding, resupinate, usually opening widely; pedicel and ovary 10-14 mm, ridged. Sepals brownish yellow or purple with purplish red venation, spatulate, 15-25 × 2.5-4 mm, apex acute. Petals brownish yellow or purple with purplish red venation, linear-oblanceolate, 14-22 × 2.5-3 mm, apex acute; lip brownish tinged yellow at center and with purplish brown venation, or pale purple tinged dark purple at center and with purplish red venation, rhombic to ovate, 13-20 × 10-13 mm, spurless, obscurely 3-lobed above middle; lateral lobes erect and loosely enclosing column, small, rounded; mid-lobe subsquare or ovate, longitudinally folded at apex, apex truncate-obtuse when flattened or sometimes slightly emarginate; disk glabrous, with a ridge running from near base almost to apex of mid-lobe. Column white, 7-10 mm, apex dilated; stigma suborbicular. Fl. May-Jun. 2n = 20, 72, 108.
Home
