What are the common types of Dendrobium?

Huoshan Dendrobium:

Huoshan Dendrobium is the most famous of the Dendrobium species. Its stem is cylindrical and curved into a wavy shape. There are about 2-3 fibrous roots at the bottom of the stem, which are usually called "dragon heads", and 2-3 leaves are left on them. It is commonly known as "Phoenix Tail". The surface of Dendrobium is yellow-green with deep lines, solid texture and relatively easy to break. The fault surface is relatively flat, powdery, with a slight odor and a relatively light taste.

Dendrobium officinale:

Dendrobium officinale is also known as earring dendrobium. It is mostly spring-shaped or spiral-shaped. It is the best among dendrobium species, and its surface is iron green. It grows in the dark places of cliffs, so it can be exposed to the spiritual energy of heaven and earth all year round and absorb the essence of the sun and the moon. It has been favored by royal nobles since ancient times and is a "magic herb" that saves people from danger.

Dendrobium nobile:

Dendrobium nobile is listed as one of the "Nine Great Immortal Herbs" in China, and is also known as the "Giant Panda in the Medical World" and is very precious internationally. This shows that the status of Dendrobium nobile cannot be underestimated. The stem of Dendrobium nobile is flat, wide in the middle and narrow on both sides. The golden or yellow-green surface is very shiny. It not only has medicinal value, but also has high ornamental value. It is one of the most precious orchids.