‘柜属’ (guì shǔ) is a botanical term referring to the willow genus, Salix, which includes over 400 species of trees and shrubs—such as weeping willows, pussy willows, and osiers—commonly found near rivers, lakes, and wetlands. Though the character 柜 (guì) usually means 'cabinet' or 'wardrobe', here it is a phonetic loan character used solely for its sound; it carries no semantic connection to storage furniture. The second character 属 (shǔ) means 'genus' or 'category' in biological taxonomy, indicating a taxonomic rank just below family.

This term appears almost exclusively in scientific, academic, or horticultural contexts—such as botany textbooks, ecological surveys, or plant conservation reports—and is rarely used in everyday conversation. Native speakers typically refer to specific willow types by common names (e.g., 垂柳 chuíliǔ 'weeping willow') rather than the formal genus name. Understanding 柜属 helps learners recognize how Chinese adopts phonetic characters for Latin scientific nomenclature while retaining standard taxonomic suffixes like 属.