Evolutionary biological studies of the diversity of the Asplenium unilaterale group.

本研究旨在利用各种方法，对单侧枫属的自然类群进行区分，并阐明它们之间的相互关系。在野外工作中观察了各树种的生态偏好。利用野外采集的材料和植物标本馆标本，定量分析了其各种性状的形态变异。三种黄家香、无影香、卡塔克香。在A. unilaterale sesu auctt中得到确认。在日本和台湾。细胞分类学研究表明，在A. unilaterale类群中存在有性无配子生殖的种，并且该类群具有特殊的基数x=39（大多数无尾亚纲物种的基数x=36）。酶电泳分析表明，在无配子的黄花蒿中存在遗传多态性，这部分是由于与有性种卡塔卡蒿的杂交所致。另一方面，对其非蛋白质氨基酸的分布规律和一些形态特征进行了详细的研究，特别是在根茎上。考虑到所有这些特征，用变换枝分类方法讨论了该类群种间的系统发育关系。

In this study it was intended to discriminate natural taxonomic groups within the Asplenium unilaterale group and elucidate interrelationships among them, using various kinds of methods. Ecological preference of each species was observed in field works. Morphlogical variations were examined by quantitative analysis of their various characters using materials collected in the field and herbarium specimens. Three species A. hondoense sp. nov., A. apogamum sp. nov., and A. cataractarum Ros. were recognized in A. unilaterale sesu auctt. in Japan and Taiwan. Cytotaxonomical studies showed that sexual apogamous species exist within the A. unilaterale group and also this group has peculiar basic number x=39 (most Aspleniacean species have x=36). Enzyme electrophoretic analysis showed that in apogamous specie A. hondoense, there exists genetic polymorphism that is due in part to hybridization with sexual speies A. cataractarum. On the other hand, the distribution pattern of some non-protein amino acids and some morphological characters especially on their rhizomes were examined in detail. Taking all these characters available into account, the phylogenetic relationship among the species of this group is discussed by the transformed cladistic method.