...The pappus of the ray florets is shorter than that of the tubular florets. Erigeron philadelphicus L. (illustration), which flowers earlier than daisy fleabane, from April to July, is also a naturalized plant native to North America. Although it resembles daisy fleabane overall, it can be distinguished by its hollow stem, the stem leaves clasping the stem, and the flower heads that droop before blooming. *Some of the terminology that mentions "Erigeron philadelphicus" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…舌状小花の冠毛は筒状小花の冠毛に比べて短い。花期が4~7月とヒメジョオンより早いハルジオン(春紫菀)Erigeron philadelphicus L.(イラスト)も北アメリカ原産の帰化植物である。全体にヒメジョオンに似ているが,茎は中空で,茎葉は茎を抱いており,頭花は開花前にうなだれているなどで区別できる。… ※「Erigeron philadelphicus」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 |
>>: Erigeron alpinus (English spelling) Erigeronalpinus
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