A delicate perennial herb of the Trillium family that grows in sunny grasslands (illustration). It is 10-30 cm tall, with a four-sided reddish-brown stem that branches creepingly at the base. The leaves are small, opposite, and alternate at the top of the stem, ovate to round, 6-10 mm long, and glabrous. The panicle is terminal, and many small, purplish-brown red bisexual flowers are borne on each branch in spikes. The flowers have four sepals and petals, and the sepals remain persistent even after flowering. The stigma of the pistil is four-lobed and densely covered with pale pink hairs. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
繊弱なアリノトウグサ科の多年草で,陽性の草地に生育する(イラスト)。高さ10~30cm,茎は四稜があり赤褐色を帯び,基部は匍匐(ほふく)分枝する。葉は小さく,対生し,茎の上部では互生するようになり,卵形から円形,長さ6~10mm,無毛。円錐花序を頂生し,多数の小さく,帯紫褐色の赤い両性花を各分枝に穂状につける。花は4枚の萼片と花弁を有し,萼片は開花後も宿存する。めしべの柱頭は4裂し,淡紅色の毛を密生する。
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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