Dendrobium nobile lindl alias Name orchid, lofty beard, nobile stone, flat nobile, flat yellow grass, flat grass, perennial herbs are blindly commonly used precious Chinese herbal medicines. Hi growth in the warm, humid, half-shade half-Yang environment, annual rainfall of more than 1000 mm, air humidity greater than 80%, the average January temperature above 8 ℃ in the subtropical forests grow better, do not require soil fertilizer Very strict, mostly in the loose and thick wild bark or trunk growth, and some also grow in the crevice. Flowering from April to May. Stems erect, succulent hypertrophy, slightly flattened cylindric, 10-60 cm long, 1.3 cm thick, upper fold-folded, conspicuously constricted at base, unbranched, with multiple nodes, nodes sometimes slightly enlarged; nodes Between the number was inverted conical, 2-4 cm long, dry golden yellow.
Leaves leathery, oblong, 6-11 cm long, 1-3 cm wide, apex obtuse and unequal 2-lobed, basally with amplex sheath.
Racemes from above part of old stem with leaves or fallen leaves, 2-4 cm long, with 1-4 flowers; inflorescences stalk length 5-15 mm, base several layers of sheath; bracts membranous Ovate-lanceolate, 6-13 mm long, apex acuminate; pedicel and ovary lavender, 3-6 mm long; flowers large, white with lavender apex, sometimes entire purplish red or except lip plate A purple red patches, the rest are white; sepals oblong, 2.5-3.5 cm long, 1-1.4 cm wide, apex obtuse, with 5 veins; lateral sepals similar to the middle sepals, apex acute, Calyx sac conical, 6 mm long; petals ± obliquely broadly ovate, 2.5-3.5 cm long, 1.8-2.5 cm wide, apex obtuse, base shortly clawed, entire, with 3 strips Main veins and many branches; labellum broadly ovate, 2.5-3.5 cm long, 2.2-3.2 cm wide, apex obtuse, basal sides with purplish stripes and short narrow claw admission, the central below the two sides hold the pistil, Short edge of the eyelashes, densely covered on both sides of the villi, the central disc with a large reddish purple plaque; pistil green, 5 mm long, slightly enlarged base, with Color of the stem foot; anther cap purple, conical, dense fine papillae, with the front end edge irregular tines. Flowering from April to May.
Dendrobium nobile seed germination and seedling growth and growth under artificial conditions Dendrobium nobile seed is very small, powdery, length of 0.75 ~ 1.10 mm, width of 0.09 ~ 0.20 mm. Only under the light microscope can see its structure. Under wild conditions, only symbiotic germination with other bacteria, germination rate is very low. Artificial conditions to give rich nutrients and adapt to the light, temperature, water wet conditions, you can normal germination.
Dendrobium hi warm, humid, half-Yin and half-Yang environment, with an annual rainfall of more than 1000 mm, air humidity is greater than 80%, the average January temperature is higher than 8 ℃ in the subtropical forests grow better, soil fertilizer requirements Not very strict, wild and more in the loose and thick bark or trunk growth, and some also grow in the crevice.