冠岳樹木園 所藏標本을 中心으로 한 國內 木本 植物의 分布地와 識別에 대해서(I) - 정선댕강나무와 털댕강나무의 실체 -

Abstract

Herbarium material of Kwanak Arboretum has been augmented by Dr. Tchang-Bok Lee and gis colleageues for th past forty years. Relatively few of the herbarium specimens have been , however, studied and cited thus far. Therefore, preserved and newly collected specimens of Kwanak Arboretum herbarium (SNUK) will have used to designate the location of each woody species in south Korea as a part of our long-term projects. We have been preparing taxonomic keys and maps of woody plants of south Korea. As a first project, we examined distribution and key diagnostics of genus Abelia (Caprifoliaceae) and considered their most appropariate taxonomic judgements. Hara(1983) recently considered A. coreana and A. insularis a variety and a form of Abelia biflora of southern China respectively. On the other hand, Lee(198636) reported an existence of Abelia dielsii of central and northern China in south Korea. The diagnostic character used to separate A. dielsii from A. biflora is a presence of pedicells coming out of a peduncle for two flowers. Unlike Hara's judgements, A. coreana show a strong coincidence in a presence of pedicells with A. dielsii. Although Lee recognized a difference between A. dielsii and A. coreana in point of a size of bract, the difference between A. dielsii and A. coreana is not great, and the number of intermediate is significant. Since Abelia dielsii is not to be distinguished from A. coreana, it is better that Abelia coreana is treated as a conspecific taxon of A. dielsii. Furthermore, Abelia insularis, which has no pedicells, looks very much like A. biflora, and thus may be reduced to infraspecific or conspecific status under A. biflora. Until examining specimens of A. biflora of China, however, A. insularis is tentatively treated as an independent taxon. A key to four Korean Abelia and a distribution map are provided here.