Hime Ryukinka is shining on the flowerbed along the road. There are 9 petals that are shining and reflecting vi sunlight. Since 6 to 8 sheets are normal, so it is full of energy. Hime Ryukinka is an exotic species that looks exactly like Ryukinka, which grows naturally in Japan. Ryukink buds in spring, blooms from May to July, and in winter the above-ground part withers and goes through winter. On the other hand, Hime Ryukinka buds from autumn to winter, blooms from March to May, and in summer the above-ground part withers and sleeps. Hime Ryukinka blooms earlier, and it grows lush and green even during the winter. The plant height of Ryukinka is 15 to 50 cm, but that of Hime Ryukinka is 10 to 15 cm. Hime Ryukinka has strong fertility, and it seems that there are places in the United States that are shunned as harmful alien species.
道沿いの花壇に姫立金花(ヒメリュウキンカ)が光っています。キラキラと太陽光を跳ね返している花弁は9枚です。6枚から8枚が普通ですから、元気溢れているのです。姫立金花は外来種で日本に自生している立金花(リュウキンカ)にそっくりです。立金花は春に芽を出し、5〜7月に開花、冬は地上部が枯れて冬越します。一方、姫立金花は秋から冬に芽を出し、3〜5月に開花、夏は地上部が枯れて休眠します。姫立金花のほうが開花が早く、冬の間も青々と緑を茂らすわけですね。草丈も立金花は15〜50cmですが、姫立金花は草丈10~15cmです。姫立金花は繁殖力が強く、アメリカでは有害外来種として敬遠されている所もあるようです。