1、 Stem difference

The stem of Dendrobium is upright, slightly flat cylindrical, about 10-60 cm long and about 1.3 cm thick. The upper part will be slightly curved, and it will obviously narrow at the base. It has no branches and many nodes

The stem of Dendrobium candidum is cylindrical. Compared with the former, it is shorter and thinner, about 9-35 cm long and 2-4 mm thick. It also has no branches and many nodes, with internodes about 1.3-1.7 cm long

2、 Blade difference

The leaves of Dendrobium are leathery, oblong in shape, about 6-11 cm long and 1-3 cm wide. The apex is blunt and has two rows of unequal sides, and there is a sheath holding a stem at the base

The leaves of Dendrobium candidum are paper, oblong lanceolate, and not as wide as the former, about 3-7 cm long and 9-15 mm wide. Its leaf edges and middle ribs will be lavender, and its leaf sheath also has purple spots

3、 The difference between flowers

The flowers of Dendrobium are large, and the petals are oblique wide oval, white and with purple apex

The petals of Dendrobium candidum are yellow green and oblong lanceolate