TITLE	A chemotaxonomic study of essential oils from the leaves of genus Clerodendrum (Verbenaceae) native to Taiwan
AUTHOR	J. Y. Hsiao Department of Botany, National Chung Hsing University, Taichung, Taiwan, Republic of China M. L. Lin Department of Botany, National Chung Hsing University, Taichung, Taiwan, Republic of China
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ABSTRACT	Fifty-four mature-leaf samples of nine Clerodendrum taxa native to Taiwan were collected from various locations on the island. Each sample was steam-distilled, and the resulting essential oil was analyzed by gas chromatography. The relationship among taxa was analyzed by cluster analysis of the gas chromatogram data (463 peaks). We assumed that peaks with the same retention time on different chromatograms were the same compound. The cluster analysis indicated a congruence between morphological and chemical relationships at the intraspecific level. All intraspecific taxa were linked as distinct clusters. At the interspecific level, there was congruence and discrepancy between morphological and chemical relationships. The results of the present study support the taxonomic treatment in which the white-flowered variant of C. paniculatum is recognized as a variety of the species. The results also support the existence of C. trichotomum var. fargesii and C. trichotomum var. ferrugineum as intraspecific taxa of C. trichotomum.
KEYWORD	Chemotaxonomy; Clerodendrum; Essential oils; Taxonomy; Verbenaceae;
ARTICLE INFO	Botanical Bulletin of Academia Sinica, Volume 36 Number 4 October 1995, page 247-251, 5 pages
PUBLISHER	Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan, Republic of China