Anatomical studies of wood of Japanese Quercus II On subgenus Cvclobalanopsis

Shimaji, K.

Bull Tokyo Univ Forests 47: 125-143

1954


Accession: 030074188

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Abstract
Among the Japanese species of genus Quercus. the woods of seven representative species of subgenus Cvclobalanopsis. i.e. Q. acuta, Q. gilva, Q. myrsinaefolia, Q. paucidentata, Q. stenophylla, Q. glauca and Q. hondai were studied. Minute descriptions of the anatomical characteristics of the wood of each species are given. The ontogenetic development of the primary broad rays were investigated; they appeared similar in all species. The Japanese species of the subgenus Cvclobalanopsis are mono-typic in wood structure, while the wood of sections Ilex and Suber of subgenus Lepidobalands are common in their structure with those of subgenus Cvclobalanopsis. suggesting close relation between these two sections and the subgenus Cvclobalanopsis. The tracheary elements of Q. hondai are considerably more thin-walled. This feature may have some bearing upon the wood-technological characteristics of this species. A key to above seven species based on the wood structure characteristics is presented.