Studies on Karyotype of Sinojackia xylocarpa Hu and Observations on Its Meiosis of Pollen Mother Cell PRELIMINARY STUDIES ON THE FLORAL BIOLOGY, BREEDING SYSTEM AND REPRODUCTIVE SUCCESS OF SINOJACKIA HUANGMEIENSIS, AN ENDANGERED PLANT IN A FRAGMENTED HABITAT IN HUBEI PROVINCE, CHINA A new synonym in the genus Sinojackia (Styracaceae) The ecology of critically endangered Sinojakia sarcocarpa L. Q. Luo Sinojackia xylocarpa var. leshanensis (Styracaceae), a new variety from Sichuan, China Cryopreservation of Pollen from Eucommia ulmoides Oliv.and Sinojackia xylocarpa Hu In Vitro Culture and Plant Regeneration of Sinojackia xylocarpa Hu In Vitro Culture and Plant Regeneration of Sinojackia xylocarpa Hu Potential Risk of Hybridization in Ex Situ Collections of Two Endangered Species of Sinojackia Hu (Styracaceae)