1, Dendrobium nobile: the stem is erect, the meat is stout, slightly flat and cylindrical, the upper part is somewhat folded, the base is obviously narrowed, unbranched, with many nodes, and sometimes the nodes are slightly enlarged; Internodes are more or less inverted cone-shaped and golden yellow after drying. Leaves leathery, rectangular, obtuse at the apex, unequally 2-lobed, and sheathed at the base.

2. Dendrobium candidum: the stem is upright, cylindrical, unbranched and multi-jointed, and 3-5 leaves above the middle are alternate; Leaves in two rows, papery, oblong-lanceolate, obtuse at the apex, slightly hooked, extending to the sheath supporting the stem at the base, and the edges and edges are often lavender; Leaf sheaths often have purple spots. When they are old, the upper edge comes loose from the stem and opens, leaving a 1 annular metallic gray gap between them.

Second, the distribution area

1, Dendrobium nobile: distributed in Taiwan Province Province, southern Hubei (Yichang), Hong Kong, Hainan (Baisha), western to northeastern Guangxi (Baise, Pingnan, Xing 'an, Jinxiu, Jingxi), southern Sichuan (Changning, Emei Mountain, Leshan) and other places.

2. Dendrobium candidum: It is distributed in southwest Anhui (Dabie Mountain), east Zhejiang (Yinxian, Tiantai and Xianju), west Fujian (Ninghua), north Guangxi (Tiane), Sichuan and southeast Yunnan (Shiping, Wenshan, Malipo and Xichou).

Third, the growth environment

1, Dendrobium nobile: Dendrobium nobile likes to grow in a warm, humid, semi-cloudy and semi-sunny environment, especially in subtropical deep forests with annual rainfall above 1000 mm, air humidity above 80% and average temperature above 8℃ in 65,438+10.

2. Dendrobium candidum: Born on semi-humid rocks in mountainous areas at an altitude of 1600 meters, Dendrobium candidum likes warm and humid climate and semi-cloudy and semi-sunny environment, and is not cold-resistant.

Baidu Encyclopedia-Dendrobium (Asparagaceae)

Baidu Encyclopedia-Dendrobium candidum (Orchidaceae Herb)