- Many species of the Fagaceae have been variously interpreted
on the basis, primarily of external morphological characteristics.
The objectives of this study are to elucidate generic and specific
characteristics of the wood of Fagaceae and to attempt to obtain evidence
regarding taxonomic relationships among some of the species
occurring in Taiwan that have been variously interpreted.
There are 45 species (Lin and Liu, 1965) of Fagaceae, subdivided
to seven genera, in Taiwan and 35 of these were obtained for
study. Detailed descriptions are provided for all species and differences
among species and genera are emphasized.
On the basis of comparative wood anatomy of the species
studied, several suggestions are made regarding relationships of
The wood anatomy of Pasania uraiana (Hay.) Schottky is very
similar to that of Castanopsis and quite different from the anatomy
of other species of Pasania or of Lithocarpus. The cupula is cuplike,
however, so that it differs in this important generic character
from Castanopsis. It probably should be treated under a distinct
genus, Limlia, as Masamune and Tomiya (1947) suggested.
The comparison of wood anatomy between Pasania dodoniaefolia
and Pasania formosana shows consistent differences. Pasania
dodoniaefolia shows distinct growth rings, homogeneous rays and
absence of crystals in the parenchyma cells. Pasania formosana
shows indistinct growth rings, heterogeneous rays and presence of
crystals in parenchyma cells. Since the morphological characters
are also somewhat different (Lin and Liu, 1965), they probably should
be treated as two distinct species.
Morphologically, Castanopsis carlesii var. sessilis is very
similar to Castanopsis carlesii, but is quite different with regard to
wood anatomy. Since Castanopsis carlesii var. sessilis has ring
porous wood, conspicuous growth rings and pore size transition
abrupt, while Castanopsis carlesii has diffuse porous wood, inconspicuous
growth rings, pore size transition gradual, these should be
considered as separate species and the original name, Castanopsis
stipitata should be recognized as the valid name.
The genera Lithocarpus and Pasania could not be separated
anatomically. These genera have been separated primarily on the basis of the cupula but they are very similar with regard to other
morphological characteristics. If both anatomy and external morphology
are considered, these should be treated as one genus, Lithocarpus.