Botanical taxonomy:
科 (kē) = 'family' in plant/animal classification (above
属 shǔ 'genus', below
目 mù 'order'). Family names in Chinese are formed by appending
科 to a representative member — here
桑 (mulberry) for Moraceae. Same pattern:
蔷薇科 (rose family),
豆科 (bean/legume family).
