noun
Japanese mugwort (Artemisia princeps)
Rare name for the plant more commonly known as 蓬 (よもぎ). The kanji 指燃草 is an uncommon spelling; the cross-reference to 蓬 indicates this is the same species.
See also: 蓬
「指燃草」は蓬の別名として古い文献に見られることがある。
The name 指燃草 can be found in old texts as an alternate name for mugwort.