Hedychium villosum var. tenuiflorum Wall. ex Baker

Epiphytic perennial herbs. Leafy shoots 66–70 cm high, slanting or erect. Rhizomes 1.7–3 cm wide, pale green internally, slightly aromatic. Roots 0.6–12 mm wide, velamen type. Leaves 5–10 in number, at a distance of 4–8.5 cm, sessile; sheath 1.9–2 cm wide, green, margins pink, pubescent externally; ligule 2.9–3.4 × 1.3–1.6 cm, single-lobed, oblong, pale pink, densely pubescent externally, tip acute, margins and tip brown, early dried off; lamina 34–40 × 8–9 cm, elliptic-lanceolate, dark green above, pale green below, glabrous; midrib pubescent below, becomes glabrous towards tip; tip long acuminate; base obtuse; margin non-ciliate, translucent, pale pink tinged. Inflorescence 8.4–12.3 cm long, erect, lax, cylindrical. Bract 2.7–2.9 × 1.1–1.2 cm, one on each flower, convolute, lanceolate, boat-shaped, brown, non-tubular, leathery, easily dried before flowering, densely hairy or villose externally, hairs brown; margin ciliate towards tip; cincinnus 3–4 -flowered. Bracteoles 2.1–2.2 × 0.7–0.75 cm, lanceolate, brown, tubular, unilaterally split upto 9–10 mm, somewhat leathery, densely hairy or villose externally, hairs brown; margin ciliate towards time. Flower 11.8–12.2 cm long, white with red stamen, mildly fragrant, three-many opens at a time. Calyx 3.3–3.7 × 0.2–0.3 cm, pale green, pink tinged towards tip, tubular, unilaterally split up to 5–9 mm, lower 2/3 portion closely appressed to corolla tube, membranous, translucent, densely pubescent externally; tip easily dried while flowering, obscurely 2 or 3 -lobed. Corolla tube 5–5.2 cm long, 2–2.5 mm wide at mouth, straight, exceeding the calyx and bract, creamy white, translucent towards base, glabrous externally, hairy internally. Corolla lobes oblong, greenish white, glabrous, drooping from flower; tip non-pouched, margins non-ciliate, lobes 3-nerved; dorsal lobe 4.3–4.4 cm long; lateral lobes 4–4.1 cm long. Lateral staminodes 3.3–3.5 × 0.1–0.15 cm, linear, straight, linear, white with a slight yellow tinge at base; tip acute, rarely forked. Labellum 3.1–3.5 × 1.2–1.5 cm, oblanceolate, boat-shaped, white with a yellow tinge at base, sinus 1.9–2.2 cm deep, lobes ensiform, unequal; claw 4–4.5 mm wide at base. Stamen 5.8–6.5 cm long. Filament 5.3–6.3 cm long, straight, c. 1.5 mm wide at base, red, light red towards tip. Anther c. 3.5 × 2.5–3 mm, sagittate, brown, glandular hairy; connective red, glabrous, row of hairy at margin, tip prolonged in to a crest; crest c. 1 mm long, red, truncate or slightly notched at center, glabrous. Ovary 2.5–3 × 2–2.5 mm, barrel-shaped, pale green, densely pubescent externally. Style filiform, white, glabrous, pale pink spotted towards stigma. Stigma cup-shaped, margin ciliate, 2–5 mm exserted from anther. Epigynous glands two, 3.5–5.5 mm long, oblong-lanceolate, yellow, free at base, fused towards tip. Fruits 1–1.1 × 1–1.1 cm, globular, sericeous, slightly angular.

Northeastern India, Bangladesh, northern Myanmar, southern Yunnan and Guangxi provinces of China, Thailand, Vietnam, and Malaysia from 600 to 1800 m (Wu and Larsen 2000).