Sea cypress (Macrorhynchia phoenicea)

Japanese: ウミヒノキ(海檜) - ウミヒノキ（英語表記）Macrorhynchia phoenicea

A coelenterate (Cnidaria) of the family Scutellaria in the class Hydrozoa. It is found from central Honshu southwards, attaching to rocks on the seabed at depths of several metres. It forms yellowish brown to dark brown, feathery colonies 10-30cm tall. Branches sprout out on the same plane from a single trunk, and many twigs grow alternately from the trunk and each branch. Each twig is regularly divided into nodes, and each node bears a hydropod. The hydropod is shaped like a teapot, attached to the stem on the back, with a mouth that opens diagonally upwards and three teeth on either side of the mouth rim and one on the back.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

ヒドロ虫綱ハネガヤ科の腔腸動物(刺胞動物)。本州中部以南に分布し，水深数mの海底の岩などに付着する。高さ10～30cmの黄褐色～暗褐色の羽状の群体になる。1本の幹から同一平面に左右に枝をだし，幹と各枝からは多くの小枝を互生する。各小枝は規則正しく節に分かれ，各節にヒドロ莢（きよう）をつける。ヒドロ莢は土瓶状の形をしていて，背側は茎に付着し，口は斜め上方に開き，口縁の左右に3個と背部に1個の歯がある。

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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