出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2010/08/06 15:48 UTC 版)
A helophyte or limnodophyte is the phytosociologic definition of a biennial or herbaceous plant of which only the buds survive a harsh period, such as winter, e.g. sweet flag (Acorus calamus) or bulrush (Typha sp.).