noun
Salix urbaniana (a species of willow)
A specific willow species; the name is a botanical term. Usually written in katakana.
オオバヤナギは湿地に生えるヤナギの一種です。
Salix urbaniana is a type of willow that grows in wetlands.
The name オオバヤナギ literally means 'large-leaf willow', from 大葉 (large leaf) and 柳 (willow). The exact derivation of the species name is uncertain.