A perennial plant of the orchid family (APG classification: Orchidaceae). It grows a flower stalk from a spindle-shaped tuberous root to a height of 15-40 cm. It has one oval leaf near the center of the stem, and the upper leaves are smaller. Around July, it produces 3-10 sparse flowers on the terminal inflorescence. The flowers are pale green and about 1 cm in diameter. The lateral petals open to the left and right, and have a long, thin spur about 1 cm long. It grows on the forest floor, forest edges, and marshes of the subalpine zones of Hokkaido, Honshu, and Shikoku, and is distributed in the southern Kuril Islands and Sakhalin. The closely related P. takedae Makino looks very similar, but has a shorter spur, less than 4 mm long. [Ken Inoue May 21, 2019] A flower stalk grows from the tuberous root, and oval leaves grow near the center of the stem. Around July, the terminal inflorescence bears 3 to 10 sparsely scattered pale green flowers. ©Shogakukan Photo by Fujio Aoyama "> Yellow-throated Plover ©Kanzo Otawa "> Main species of the genus Psammophila (pictures of specimens) Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
ラン科(APG分類:ラン科)の多年草。紡錘状の塊根から花茎を伸ばし高さ15~40センチメートル。茎の中央付近に楕円(だえん)形の葉を1枚つけ、上部の葉は小さい。7月ころ、頂生する花序に3~10個の花をまばらにつける。花は淡緑色、径約1センチメートル。側花弁が左右に開き、1センチメートルくらいの細長い距(きょ)がある。北海道、本州、四国の亜高山帯の林床、林縁、湿原に生育し、南千島、樺太(からふと)(サハリン)に分布する。近縁のミヤマチドリP. takedae Makinoはよく似ているが、距が短く、4ミリメートル以下である。 [井上 健 2019年5月21日] 塊根から花茎を伸ばし、茎の中央付近に楕円形の葉をつける。7月ごろ、頂生する花序に3~10個の淡緑色の花をまばらにつける©Shogakukan 撮影/青山富士夫"> キソチドリ ©大多和鐘三"> ツレサギソウ属のおもな種類〔標本画〕 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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