Effect of sampling strategy on estimation of fine-scale spatial genetic structure in Androsace tapete (Primulaceae), an alpine plant endemic to Qinghai-Tibetan Plateau Androsace erecta——A Newly Recorded Species of Primulaceae from Shaanxi Flavonoid glycosides from Androsace umbellata Molecular phylogeny and biogeography of Androsace (Primulaceae) and the convergent evolution of cushion morphology Karyotypical studies of 6 species of Androsace(Primulaceae)in China with reference to their systematic significance A Revision of the Genus Androsace L. in China (Cont.) Pollen morphology of Androsace (Primulaceae) and its systematic implications Variation of karyotype and ploidy of Androsace yargongensis (Primulaceae) in three population in Q-Z Plateau