牡丹蔓

Literally, “peony vine”, compound of 牡丹(ぼたん) (botan, “peony”) + 蔓(つる) (tsuru, “vine”). The tsuru changes to zuru as an instance of rendaku (連濁).

牡丹蔓(ぼたんづる) or 牡丹蔓(ボタンヅル) • (botanzuru) 

1. Clematis apiifolia

   Synonyms: 唐草 (karakusa), 笑草 (emigusa)

As with many terms that name organisms, this term is often spelled in katakana, especially in biological contexts (where katakana is customary).

• 先島牡丹蔓(サキシマ　ボタンヅル) (sakishima botanzuru)