淡黄金花茶归并种的形态特征比较及分类探讨

Comparisions of Morphological Characters of Some Camellia Species which were Reduced to Camellia flavida H.T.Chang and Discussion on their Taxonomic Status

在一些山茶属分类文献中,将弄岗金花茶Camellia longgangensis、毛籽金花茶、陇瑞金花茶处理为淡黄金花茶的异名,中华五室金花茶、直脉金花茶、多瓣金花茶、武鸣金花茶处理为变种-多变淡黄金花茶的异名;对这些被归并分类群做分类探讨。对它们15个居群的花、果实、种子、叶片形态进行研究。以花瓣合生高度、花色特征、子房室数、果皮厚度、种皮是否被毛、叶质及厚度与侧脉关系作为主要分类性状,并根据相似性将种群分为3个分类群组进行性状比较,分析变异,结果显示:除子房室数外其它主要分类性状在3个分类群组之间表现出明显分化。因此,认为将这些分类群归并作淡黄金花茶一个种是不恰当的。结合模式标本检查以及原始文献分析,作者建议将毛籽金花茶、陇瑞金花茶处理为弄岗金花茶的异名,把直脉金花茶、多瓣金花茶处理为中华五室金花茶的异名,并改种名为多变金花茶,两者与武鸣金花茶同为独立种。

In some Camellia classification literatures, C. longgangensis , C. ptilosperma and C. longruiensis were treated as synonyms of C. flavida, and C. quinqueloculosa , C. longgangensis var. patens, C. multipetala and C. wumingensis were treated as synonyms of C. flavida var. patens, the taxonomic status of these species was discussed in this paper. The morphological characters of flowers, fruits, seeds and leaves in the 15 populations of these species were studied. According to the similarity of the charac- ters, 15 populations were divided into three classification groups. Based on the data of prominent classi- ficational characters including corolla tube height, characteristics of flower color, locular number of ova- ries, pericarp thickness, with indumentum of the testa of seeds or not, the correlation between the tex- ture and the thickness of the leaves with the lateral nerves, etc, the morphological variations of samples from three groups were compared and analyzd. The results are as follows： The prominent classificational characters except locular number of ovaries among three groups show significant differentiations. There- fore, these species reduced as synonyms of C. flavida are unreasonable. After examining the type speci- mens and the original literatures, the authors suggest that C. ptilosperma and C. longruiensis are treated as synonyms of C. longgangensis, and C. longgangensis var. patens and C. multipetala are treated as syn- onyms of C. quinqueloculosa; both and C. wumingensis should be regarded as three independent species