noun
Yucca smalliana; Adam's needle
A species of yucca with narrow, thread-like filaments on the leaf margins. The Japanese name 糸蘭 literally means 'thread orchid', referring to the fibrous strands.
庭に糸蘭を植えたら、夏に白い花が咲いた。
When I planted a Yucca smalliana in the garden, white flowers bloomed in summer.