Morphological Variation of Three Endemic Species of Callicarpa (Verbenaceae) in the Bonin (Ogasawara) Islands
Morphological Variation of Three Endemic Species of Callicarpa (Verbenaceae) in the Bonin (Ogasawara) Islands
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小笠原群岛三种紫珠（马鞭草科）特有种的形态变异
DOI：
10.1111/j.1442-1984.1986.tb00015.x
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发表时间：
1986
影响因子：
1.4
通讯作者：
N. Kawakubo
中科院分区：
文献类型：
--
作者：
N. Kawakubo
对小笠原群岛（七岛群岛和前岛群岛）的3种特有种Calligrapha的22个种群样本进行了9个叶性状的分析，以阐明其形态变异的现状。结果表明，这三个物种是明确可识别的，并有自己的变异模式。Callanipaglabra和C. nishimurae的变化相对较小，仅在千岛群岛适应有限的栖息地。因此，这些物种被视为特化物种。C. subpubescens在两个岛群中的分布较广，变异较大。本种在形态上在两个岛群之间有区别。在另外两个种没有分布的端岛群岛，也发现了几种C. subpubsecens与C.光滑的C.的subpubescens在Hahajima群岛的种群间比那些在Chichijima群岛。C. subpubescens在小笠原群岛内占据了各种生境，被认为是一个多样化的物种。
A total of 22 population samples of three endemic species of Callicarpa in the Bonin Islands (the Chichijima Islands and the Hahajima Islands) were examined for nine leaf characters to clarify the present status of morphological variations. Results showed that three species are distinetly recognizable and have their own patterns of variation. Callicarpa glabra and C. nishimurae were relatively less variable and adapted to limited habitats only in the Chichijima Islands. Thus these species were regarded as specialized species. C. subpubescens was more variable than the above two species and distributed widely in both of the two island groups. This species was morphologically differentiated between the two island groups. In the Hahajima Islands where two other species were not distributed, several plants of C. subpubsecens were similar to C. glabra. The populations of C. subpubescens in the Hahajima Islands were inter-populationally more variable than those in the Chichijima Islands. C. subpubescens occupied various habitats within the Bonin Islands and was regarded as a diversified species.