This is a marine aquatic plant that grows in the sea.

Gelidium, also known as sea jelly, red silk, phoenix tail, etc., is a type of red algae. It is completely transparent, like jelly, and has a refreshing, crisp and tender taste. It can be mixed with cold dishes or made into jelly. Gelidium is also the main raw material for refining agar. Agar, also known as agar, agar, and gelatin, is an important plant gum and a fibrous food. Agar can be used to make cold foods, jelly or microbial culture media. Gelidium is mainly distributed in waters such as Taiwan, Hainan and the Paracel Islands. Gelidium amansii (Gelidium amansii), class Rhodophyceae, Geliliaceae. The algae are purplish red or brownish red, flat and upright, with clusters of pinnate branches, the branchlets are opposite or alternate, and the ends of each branch are sharply pointed, generally 10-30cm high. Single axis type. There are many root-like filaments between cortical cells. Tetraconid sporangia are formed from terminal branches and divide in a cross-shaped pattern. The sperm sac and fruit cell are also formed from terminal branches. The fruit cyst protrudes on both sides, each with a small hole. The fruit sporangia are long club-shaped. It is a common species in the Yellow Sea, Bohai Sea and East China Sea of ??China. For food, it is also the main raw material for extracting agar gel. Growth environment:

1. Born on coral reefs 1-2m below the high dry tide line.

2. Born on coral reefs at a depth of 2-5m below the low tide zone. Perennial algae. The algae are upright and multi-branched, with rhizome-like anchors attached to the rocks at the bottom of the shallow sea, purple-red or dark red. The algal body is composed of epidermal cells, surface layer and pith. The epidermal cells are tightly arranged, the cortex and pith are relatively loose, and the cells are filled with colloid. Stone cauliflower is dioecious, with female and male gametophytes and four sporophytes in the algae. Appearance: