辽宁中医药大学-- 药植名词解释( 英) 1. Annual ring(年轮)：the early wood and late wood arise alternate in a year,formed ~ 2. Pharmaceutical botany :pharmaceutical botany is utilizing common botany knowledge and method to study plants that possesses prevention and cure illness as well as health protection function. 3. Phloem ray(韧皮射线 ):the seondary ray located in phloem called phloem ray two parts of this is terned vascular ray维管射线4. Dorsi-ventral leaf（两面叶）：the lamina(叶片）has distinctions in appearance and structure between upper and lower surfaces and characteristic reticulate venation of dicotyls(双子叶植物 ) 5. Multiple epidermis(复表皮 ) : most species epidermis is only one layer cell ,but few species can be several layer cells termed multiple epidermis. 6. Rhytidome(落皮层 ):the older periderm(周皮 ) and inner dead tissue compound body separated by new periderm is called rhytidome. 7. Early wood(早材 )：in spring, the large thin wall xylem(木质部 ) ducting(导管) cell are formed，called early wood 8. Late wood :in autumn, the small ,thickened wall xylem ducting cells are formed called~ 9. Heart wood(心材 ): central part of xylem ,color heavy hard , contain many metabolish products. 10. Sap wood(心材 )：outside part of xylem ,color light, soft,conducting function. 11. Intra-fascicular cambium(束中形成层 ): between the xylem and phloem(韧皮部 ) groups,the vascular bundles include a region of potentially meristematic(分生细胞 ) cells formed ~ 12. Medullary ray (髓射线 ): it is called primary ray also ,a tissue region between vascular bundles(维管束 ) ,it connects the cortex(皮质 ) and pith(髓) in primary stems, consisting of parenchyma, it mainly cross transmission and storage. 13. root skin: in botany...
