Dendrobium thyrsiflorum Rchb. F.: Stems erect or obliquely erect, cylindric, coarse, unbranched, several-noded, yellowish brown and shiny, with several longitudinal edges. 3-4 leaves alternate in the upper stem, leathery, oblong or oblong-lanceolate. Racemes lateral to upper leaves with old stems, drooping, 10-16 cm long, densely populated with many flowers, flowers spreading, thinly textured, sepals and petals white; petals suborbicular, 14 mm long, 12 mm wide, Apex obtuse, base with claws ca. 2 mm, with 7 veins and many branched veins, base notched with serrate teeth above margin; lip golden, semicircular triangular, 15 mm long, 19 mm wide, apex rounded Blunt, base with claw ca. 3 mm. Flowering from April to May.
Bulbose stems erect or obliquely erect, cylindric, coarse, 12-46 cm long, coarse 7-16 mm, base narrowed to narrowly cylindrical, unbranched, with segments, yellowish brown and shiny, numerous Longitudinal edge of the bar. Leaves 3-4, opposite each other at upper stem, leathery, oblong or oblong-lanceolate, 9-16 cm long, 2.4-5 cm wide, apex acute, Tuck into a ca. 6 mm long handle.
Racemes lateral to upper leaves with old stems, drooping, 10-16 cm long, densely many flowers, inflorescences basally 3-4-membered sheath; bracts pale white, papery, obovate, long 10 -15 mm, 5-13 mm wide, apex obtuse, cordate, oblong, pedicels and ovary pale white with purple stripes, 2.5-3 cm long; flowers spreading, thinly textured, sepals and petals white; Sepals ovate, ca. 1.5 cm, 8 mm wide, apex obtuse, entire, with 5 veins; lateral sepals slightly oblique ovate-lanceolate, 1.7 cm long, 7 mm wide, apex obtuse, entire, 5 veins; calyx capsule nearly spherical, width 4 mm.
Petals suborbicular, 14 mm long, 12 mm wide, apex obtusely rounded, base with claws ca. 2 mm, with 7 veins and many branched veins, base notched with fine serrations above margin; lip golden yellow, semicircular Shaped triangle, 15 mm long, 19 mm wide, apex obtuse, claw ca. 3 mm at base, densely short velor hair, abaxially sparsely vellus hair; claw forward with 1 inverted tongue; White, 4 mm long; pistil foot pale yellow, 4 mm long; cap white, flattened before and after the conical. Flowering from April to May.
Born on the trunk of a mountain forest at an elevation of 1100-1800. Production of southeastern Yunnan in southern China to the western (Pingbian, Jinping, Maguan, Menghai, Simao, Pu’er, Mojiang, King East, Cangyuan, Lancang, Mojiang, Tengchong area). Distributed in northeastern India, Myanmar, Thailand, Laos, Vietnam. Specimens collected from Myanmar.
Dendrobium thyrsiflorum Rchb. f. is a kind of hi-perennial herb, likes warm and humid, with annual rainfall of more than 1000 mm, half-shade half-sun environment, the average January temperature is higher than 8 ℃ in the subtropical forests grow in deep forests is better , Suitable for growing temperature of 15 to 28 degrees, suitable for growing air humidity above 60%, less demanding on soil fertility, wild and more in the loose and thick bark or trunk growth, and some also grow in the crevice. Is an aerial root, the main requirements of the root permeability is good, the best substrate to breathe air ventilation, in the appropriate temperature and humidity, fast growth, survivability is very strong. Spring and early summer each year, biennial stems on the section of the inflorescence, flowering stems grow into new stems into stems, autumn and winter into the dormant period.