Veratrum japonica - Veratrum japonica

Japanese: バイケイソウ - ばいけいそう
Veratrum japonica - Veratrum japonica

A perennial plant of the lily family (APG classification: Liliaceae). The stem is thick, upright, and 1-1.5 meters tall. The leaves are broadly elliptical, stalkless, and 15-30 cm long. In July and August, the panicles produce numerous flowers in a large cluster. There are six perianths, each about 2 cm across and 1.2-1.5 cm long. There are six stamens, each shorter than the perianth. There are three short styles that bend outward. The fruit is a capsule with three chambers. The name comes from the fact that the flowers resemble plums and the leaves resemble Chinese orchids. It is found in Hokkaido, Kyushu, northeastern China, Ussuri, and the Kamchatka Peninsula. It grows in moist grasslands from low to high mountain zones. The closely related species, Kobaikeisou, is very similar to this species, but is smaller overall, with stamens longer than the perianth and a style that does not bend. It grows in the grasslands of deep and alpine mountains north of the Chubu region.

[Takemi Shimizu November 19, 2018]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

ユリ科(APG分類:シュロソウ科)の多年草。茎は太く、直立し、高さ1~1.5メートル。葉は広楕円(こうだえん)形で柄はなく、長さ15~30センチメートル。7~8月、円錐(えんすい)花序に多数の花を総状に開く。花被(かひ)は6枚で緑白色、径約2センチメートル、長さ1.2~1.5センチメートル。雄しべは6本、花被より短い。花柱は3本で、短く、外に曲がる。果実は蒴果(さくか)で3室からなる。名は、花がウメに、葉がケイランに似ることによる。北海道、九州、中国東北部、ウスリー、カムチャツカ半島などに分布する。低山帯から高山帯の湿った草地に生える。近縁種コバイケイソウは本種によく似るが、全体がより小さく、雄しべは花被より長く、花柱は曲がらない。中部地方以北の深山や高山の草地に生える。

[清水建美 2018年11月19日]

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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