Micromorphological characters of the seeds of Apocynum venetum and Poacynum hendersonii A COMPARATIVE ANATOMY OF DIFFERENT POPULATIONS ON APOCYNUM VENETUM AND POACYNUM HENDERSONII Simultaneous determination of rutin, hyperin, and isoquercitrin in leaves of Apocynum venetum and Poacynum hendersonii located in Xinjiang by HPLC