The Anatomical Study of the Stem at Two Gymnosperme Species (Cryptomeria japonica Don, Ginkgo biloba L.)

摘要

In the present paper there is presented the study of 2 species from the Gymnospermae, one belonging to the Cycadopsida Class and the other one from the Coniferopsida Classs For the two species (Ginkgo biloba L., fam. Ginkgoaceae and Cryptomeria japonica, fam.Cupressaceae) there has been studied the stem from the anotomically point of view. There has been made cross section through the stem of the two species and there has been observation regarding the peridermis, the liber, the cambium at Cryptomeria japonica and the phelogene, central cylinder, the pheloderme, the cambium and the wood for Ginkgo biloba.