夏蜡梅属花粉形态的研究

本文首次报道了夏蜡梅(Calycanthus chinensis)花粉的扫描电镜观察结果,并与西美国蜡梅(C.occidentalis)、美国蜡梅(C.floridus)的作了比较,表明前者较为原始,后者比较进化,夏蜡梅属(Calycanthus L.)可能以夏蜡梅起源于东亚(中国),与从细胞学、形态学等得到的结果一致。鉴于夏蜡梅与西美国蜡梅、美国蜡梅在许多性状上的较大差异,作者认为以Sinocalycanthus chinensis (Cheng et S.Y.Chang) Cheng et S.Y.Chang为模式种的单型属Sinocalycanthus Cheng et S.Y.Chang也许应予确认。

SAUDY ON THE POLLEN MORPHOLOGY OF CALYCANTHUS L.

In the present paper it is reported that the pollen morphological characters of Calycanthus chinensis Cheng et S. Y. Chang were examined by scanning electron microscope for the first time and compared with that of C.ilordusf L. and C. occidentalis Hook. et Arnott (Table 1, Plate Ⅰ, Ⅱ). The comparison shows that the former was more primitive,the latter advanced, And Calycanthus might originate in Eastern Asia (China) from C. chinensis. The results were the same as the conclusions based on cytology, morphology and so on^1,2]. As the many differences among C. chinensis, C. floridus and C. occidentalis the author recognized that monotypic Sinocaly canthus Cheng et S. Y. Chang, whose type was S. chinensis (Cheng et S. Y. Chang) Chang et S. Y. Chang (=Calycanthus chinensis), would be admited perhaps.