Narthecium ossifragum sunan kimiyya ne don ƙaramin tsire-tsire na shekara wanda aka fi sani da asphodel bog. Nasa ne na dangin Nartheciaceae kuma asalinsa ce ga wuraren dausayi da bogi a Turai, gami da Burtaniya. Itacen yana da furanni masu launin rawaya mai haske, masu siffa ta tauraro waɗanda suke girma akan dogayen kusoshi, da kuma kunkuntar ganye masu kama da ciyawa. Sunan nau'in "ossifragum" yana nufin "mai karya kasusuwa" a cikin harshen Latin, yana nufin amfani da tsire-tsire na gargajiya a matsayin maganin karayar kashi.