| the plant family Salicaceae, characterized by deciduous trees and shrubs having simple, alternate leaves, hairy catkins of male and female flowers on separate plants, and capsular fruit, and including the aspen, cottonwood, poplar, and willow. |
| willow family | |
noun | |
| two genera of trees or shrubs having hairy catkins: Salix; Populus [syn: Salicaceae] |