Uematsusou - Uematsusou

Japanese: ウエマツソウ - うえまつそう
Uematsusou - Uematsusou

A small perennial plant of the family Pterygoceae (APG classification: Pterygoceae). It was named after its discoverer, Eijiro Uematsu. The stem is 6-10 cm tall, has one to four or five scale leaves, and bears three to nine flowers in a raceme at the top of the stem. The upper flowers in the inflorescence are male, and the lower flowers are female. It flowers from July to October. It grows in forests and lives a saprophytic life. It is distributed from the Chubu region of Honshu westward to Okinawa, the Izu Islands, and the Ogasawara Islands. It was thought to be unique to Japan, but it has been discovered to be the same species that is widely distributed in Southeast Asia.

[Takemi Shimizu October 19, 2018]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

ホンゴウソウ科(APG分類:ホンゴウソウ科)の小形の多年草。発見者の植松栄次郎にちなんで命名された。茎は高さ6~10センチメートル、1枚から4、5枚の鱗片葉(りんぺんよう)があり、茎頂の総状花序に3~9個の花をつける。花序の上の花は雄花、下の花は雌花である。花期は7~10月。林内に生え、腐生生活を行う。本州の中部地方以西から沖縄、伊豆諸島、小笠原(おがさわら)諸島に分布する。日本特産とされていたが、東南アジアに広く分布する種と同一であることが判明している。

[清水建美 2018年10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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