Sect. oppositifoliae (Hand. -Mazz.) Chen et C. M. Hu (Primulaceae)
组3. 对生叶组——Sect. Oppositifoliae (Hand. -Mazz.) Chen et C. M. Hu in Act. Phytotax. Sin. 17: 30. 1979. ——Lysimachia sect. Apodanthera Hand. -Mazz. subsect. Oppositifoliae Hand. -Mazz. in Not. Roy. Bot. Gard, Edinb. 16: 75. 1928.
形态特征：茎草质，有狭翅，拱曲而后匍匐或鞭状伸长，叶对生。花黄色，单出或双出腋生；花药以顶端开张的侧缝开裂。蒴果脆壳质，瓣裂。
产地分布：本组有下列3种。