‘柜种’ (guì zhǒng) is a specialized botanical term referring to a specific variety or cultivar of willow tree. Though the character 柜 (guì) commonly means 'cabinet' or 'wardrobe', in this context it is a rare, archaic variant used historically in certain regional or technical plant nomenclature — particularly in older Chinese horticultural texts — to denote a particular type of willow, often distinguished by bark texture, growth habit, or leaf shape. The second character 种 (zhǒng) means 'kind', 'variety', or 'species', making the compound literally 'willow variety'.

This term is not used in everyday speech or modern standard botanical classification; instead, it appears mainly in historical records, local forestry documents, or academic studies of traditional Chinese plant taxonomy. Learners should recognize it as a niche technical term rather than a general vocabulary item. It’s important not to confuse 柜 with the more common 柳 (liǔ), the standard character for 'willow'; 柜种 does not mean 'cabinet variety' — the first character here functions purely as a phonetic or dialectal marker.