A genus of green algae belonging to the Violaceae family that grows like a thin orange carpet or spots on exposed areas such as rocks, bark, or wooden fences. If you pick up a part of it with tweezers and examine it under a microscope, you will see that the alga is a single-row filament with many branches, and the chloroplasts inside the cells contain many orange granules. Specially shaped cells with a spherical or elliptical shape are produced at the tip or side of the filament, which are asexual reproductive organs and produce many zoospores inside. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
岩上,樹皮上または板塀上など空中に露出した場所に,橙色の薄いじゅうたんを敷いたように,または斑紋のように生育する緑藻の1属で,スミレモ科に所属する。一部をピンセットなどでつまみとって検鏡すると,藻体は多くの分枝をもつ単列糸状体であり,細胞内の葉緑体には多数の橙色の顆粒(かりゆう)が含まれることがわかる。糸状体の先端または側部に球形ないし楕円形の特別な形状の細胞がつくられるが,これは無性生殖器官で,中に多数の遊走子がつくられる。
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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