A large moss of the Hypnaceae family (illustration). Distributed in East Asia, it is commonly found in low mountain areas throughout Japan, growing in colonies on the ground in sunny areas, on rocks, and at the base of tree trunks, forming fluffy yellow-green to pale green mats. The stems reach over 10 cm in length and produce many pinnate branches. The lower half of the leaves are broadly ovate, the upper half lanceolate, and curve sickle-shaped toward the rear. The midvein is short and unclear. The plant is dioecious, and sporophytes are quite rare. The capsule is cylindrical, curved, and inclined. The capsule teeth are arranged in two rows, one inside and one outside. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
ハイゴケ科の大型の蘚類(イラスト)。東アジアに分布し,日本全国の低山地に普通にみられ,日当りのよい地上,岩上,樹幹の基部などに群生し,黄緑色から淡緑色のふわふわしたマットをつくる。茎は長さ10cm以上に達し,多数の枝を羽状に出す。葉は下半部が広卵形,上半部は披針形で後方に向かって鎌形に曲がる。中央脈は短く不明瞭。雌雄異株で胞子体はかなりまれ。蒴(さく)は円筒状で湾曲し,傾斜する。蒴歯は内外2列に並ぶ。
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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