Dendritic fern, the trunk is 3-8m high, the terminal leaves are feathery, and the length is1-3m. The pinnae is rectangular, with 30-50 cm kohlrabi leaves. There are slightly blistering scales under the kohane axis and the main vein. The sac is born on the convex sac support at the bifurcation point of venules, and the capsule membrane is nearly spherical, and it cracks under the sac group when it matures.

Brief introduction of Dryopteris capitata;

Pteris, also known as tree ferns, ferns, spiny, spiny, spiny, spiny, spiny, spiny, spiny, spiny, spiny, spiny, spiny, spiny, spiny and spiny, appeared about 300 million years ago, before the appearance of dinosaurs1 When dinosaurs became extinct, they were prickly, prickly, prickly, prickly, prickly, prickly, prickly, prickly, prickly, prickly, prickly, prickly, prickly, prickly, prickly.

When dinosaurs lived 200 million years ago, tree ferns once spread all over the world, tall and lush. Due to geological changes, most of them have been extinct, buried underground and turned into coal, and only a few have survived. Because it is rare and precious, it is listed as a kind of protected plant by the state.

Besides being precious because of its long history, Pteris Pteris is the only woody fern that can grow into a tree, with a hollow and straight trunk and high overall ornamental value.

Pteris pinnatifida is very picky about the growth environment, so it is difficult to achieve artificial breeding. Because Dryopteris capitata has not fully adapted to terrestrial life, its breeding mode mainly depends on water flow. It requires the growing environment to be warm in winter and hot in summer, and the air humidity is high.