Holaxonia

Japanese: Holaxonia
Holaxonia

…The coenchyma consists of two layers, an inner and an outer one, with the outer layer containing scattered calcareous spicules, and the inner layer forming a hard shaft at the marrow. The shaft can be made of calcareous spicules or non-spicules consisting of gorgonine and traces of calcareous matter. The former are classified as the suborder Scleraxonia, and the latter as the suborder Holaxonia. Many of the colonies are beautifully colored in red, orange, or yellow, and because they are large, they are a main attraction in underwater scenery. …

*Some of the terminology that mentions "Holaxonia" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…共肉は内外2層よりなり,外皮層には石灰質の骨片がまばらにあり,内層は髄部に硬い骨軸を形成していく。骨軸には石灰質の骨片からなるものと,ゴルゴニンと微量の石灰質からなる非骨片質のものとがあり,前者を骨軸亜目Scleraxonia,後者を全軸亜目Holaxoniaとしている。群体の色彩が赤色,橙色,黄色など美しいものが多く,また大型なため海中景観をにぎわす主役になっている。…

※「Holaxonia」について言及している用語解説の一部を掲載しています。

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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