Dendrobium violetum and Dendrobium ironum.

There are 1500 species worldwide. Except for a few species, they are all epiphytic orchids.Before 1980, only 57 species of Dendrobium plants were found in our country, and then 19 species of Dendrobium plants were found and named to enrich the dendrobium germplasm resources in our country, and now there are 76 species in ****.

China's Dendrobium species only accounts for about 5% of the world, but in history, its medicinal development and utilization in the world forefront, is an important common Chinese herbal medicine.

Expanded Information:

Racemes issuing from above the middle of leafy or deciduous old stems, 2-4 cm long, with 1-4 flowers; peduncle 5-15 mm long, basally sheathed by several tubular sheaths; bracts membranous, ovate-lanceolate, 6-13 mm long, acuminate at the apex; pedicel and ovary lavender, 3-6 mm long; flowers large, white with lavender apex.

Sometimes purplish red throughout or white except for 1 purplish-red patch on the labial disk; middle sepal oblong, 2.5-3.5 cm long, 1-1.4 cm wide, apex obtuse, with 5 veins.

Lateral sepals similar to middle sepals, apex acute, base skewed, with 5 veins; calyx capsule 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 main veins and many tertiary veins;

Baidu Encyclopedia - Dendrobium (Asparagus)