Acanthopeltis japonica Okamura

Japanese: ユイキリ(英語表記)Acanthopeltis japonica Okamura
Acanthopeltis japonica Okamura
A red alga (illustration) with a cylindrical body, alternate or forked branches, and a height of 10-20 cm. A symbiotic sponge lives on the surface of the body, resembling the skin of a bird's foot, hence the name Triashi or Tori noashi. This deep-sea seaweed is found on the Pacific coast west of the Kanto region, the northern coast of Kyushu, and the coast of the Korean peninsula, and is used as a raw material for agar and tokoroten. When fresh, it is dark red, but when dried, the body turns white due to the symbiotic sponge. It is classified as a member of the Agaraceae family, but the amount of agar contained in the dried alga is about 5% of the alga, which is much less than the 20-30% of Agar that is contained in Tengusa.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
体は円柱状で互生または叉(さ)状に分枝して高さ10~20cmになる紅藻(イラスト)。体の表面に海綿動物が共生し,その様子が鳥の足の皮膚を思わせるのでトリアシまたはトリノアシの別名がある。関東地方以西の太平洋沿岸,九州北岸,朝鮮半島沿岸等に分布する深所産の海藻で,寒天やところてんの原料にする。生時は暗紅色であるが,乾燥すると共生する海綿のために体は白色となる。分類上テングサ科に所属するが,含有する寒天量は乾燥藻体の約5%で,テングサの20~30%に比べはるかに少ない。

出典 株式会社平凡社世界大百科事典 第2版について 情報

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