Dendrobium is elegant, exquisite, bright, and fragrant. It is described as one of the "four great ornamental flowers".
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Dendrobium aurantiacum Rchb. f.

Morphological characteristics
Dendrobium aurantiacum Rchb. f. is a herbaceous plant, slender stems, cylindrical, usually 25-35 cm long, 2-4 mm thick, unbranched, with the majority of nodes; internodes 2.5-4 cm long, yellow or brown dry. Leaves leathery, linear or narrowly oblong, 8-10 cm long, 0.4-1.4 cm wide, apex obtusely and pitted or sometimes acute and slightly rounded on one side, base sheathing;
Inflorescences laterally erect, 0.5 cm long, basally nested 3-4 sheaths; sheaths proximally erect, lasts about 1 cm, usually 1-to 2-celled, sometimes 3-flowered; Papery, pale white, cup-shaped or tube-shaped, base shorter, gradually becoming longer and longer, 5-20 mm long; bracteoles membranous, pale white, boatlike, 1.2-1.3 cm long and 5 mm wide, Apex obtuse; pedicel and ovary ca. 3 cm; flowers orange-yellow, spreading; middle sepals oblong-elliptic, 2.3-2.5 cm long, 1.1-1.4 cm wide, apex obtuse, entire, with 5 veins; Round, as long as sepals and slightly narrower, apex obtuse, base slightly astigmatism, with 5 veins; calyx sac conical, ca. 6 mm.
Petals elliptic or broadly elliptic-obovate, 2.4-2.6 cm long, 1.4-1.7 cm wide, apex obtuse, entire, with 3 veins, lateral branches with main veins branched; lip nearly circular, 2.5 cm long , Ca. 2.2 cm wide, claw ca. 3 mm at base and sometimes with several red stripes on its inner surface, pistils embracing below the middle, densely hairy on the underside, irregularly serrated margin with no spots on the lip plate Pistil; rachis ca. 4 mm, with pistillate foot ca. 3 mm; cap narrowly conical, ca. 4 mm, smooth, anterior truncate. Flowering from May to June.
Growing habits
Dendrobium aurantiacum Rchb. f. is a kind of hi perennial herbs like hi, like in the warm, humid, annual rainfall of more than 1000 mm, half-shade half-Yang environment, the average January temperature above 8 ℃ in the growth of subtropical 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.