My preliminary results indicated that most representative species of Old World Gesneriaceae species are anisocotylous except European Gesneriaceae genus such as Ramonda and Haberlea.

• 目前结果显示除了欧洲苦苣苔类群 (含欧洲苣苔属及喉突苣苔属)以外绝大多数的旧世界苦苣苔物种都具有子叶不等大的现象。