A NEW DISTRIBUTION OF CORYLUS WANGII HU (BETULACEAE) IN SICHUAN PROVINCE, CHINA Validation of Two Names Betula jiulungensis (Betulaceae) and Rubia ovatifolia (Rubiaceae) Morphogenesis of Female Reproductive Organs in Carpinus turczaninowii and Ostryopsis davidiana (Betulaceae) Chromosome Numbers of Two Threatened Species of Betulaceae New records of higher plants from some provinces in China (I) Phylotranscriptomic analyses in plants using Betulaceae as an example Morphologyical anatomical studies on Betulaceae vessel element from Helongjiang Province, China A Study on Foliar Epidermis in Betulaceae Miocene Flora from Markam County and Fossil Record of Betulaceae Wind Pollination Characteristics of Styles in Betulaceae Carpinus insularis (Betulaceae), A New Species from Hong Kong, China Pollen Morphology of the Betulaceae Phylogeny and Phytogeography of the Betulaceae (to be continued) Tannins from Corylus heterophylla (Ⅲ) Lectotypification of Two Names in Betulaceae