Adenocaulon

...A perennial herb of the Asteraceae family that grows in the shade of trees and in moist valleys in mountainous areas (illustration). The underground stems are well developed. The stems are erect and 60-100 cm tall. The leaves concentrated at the bottom of the stem are triangular-cordate shaped and similar to those of butterbur, but the stalks have wings and the undersides are densely covered with white fluff. The flowering season is August to October. The flower head has 7-11 female flowers on the edge and 7-18 bisexual flowers inside. The corolla of each is small, 1.5-2 mm long. The female flowers bear fruit, but the bisexual flowers do not. The atrophic fruit is narrowly obovate, 6-7 mm long, and has many stalked glandular bodies in the upper half, but no pappus. ...

*Some of the terminology explanations that mention "Adenocaulon" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…山地の木陰や湿った谷間に生えるキク科の多年草（イラスト）。地下茎はよく発達する。茎は直立し，高さ60～100cm，茎の下部に集中する葉は三角状心形でフキの葉に似ているが，柄に翼があり，裏面に白綿毛が密にある。花期は8～10月。頭花には縁に7～11個の雌花があり，内に7～18個の両性花がある。いずれも花冠は長さ1.5～2mmと小さい。雌花は実るが，両性花は実らない。瘦果（そうか）は狭倒卵状で，長さ6～7mm，上半部分に多数の有柄の腺体があるが，冠毛はない。…

※「Adenocaulon」について言及している用語解説の一部を掲載しています。

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