[mass noun](Botany)the condition (e.g. in primroses) of having styles of different lengths relative to the stamens in the flowers of different individual plants, to reduce self-fertilization (植)花柱异长(如樱草花)
派生 heterostylous adjective 语源
late 19th cent.: from hetero- 'different' + Greek stulos 'column' + -y