Morphological studies on pollen grains and seeds of the Japanese Leguminosae

用电子显微镜观察了豆科植物的花粉形态和结构，并与近缘种进行了比较。抱茎槐（SophorafranchetianaDunn）是我国东南部九州南部和福建间断分布的一种罕见种，其花粉沟长，内孔大，中沟内覆被层为微沟或微沟，近沟处覆被层为扁平、规则或疣状，花粉粒的形态特征表明抱茎槐与其它种的分类关系较近（Hoshi & Ohashi，1989），对野豌豆属（Vicia）和槐属（Maackia）的所有日本本土种的花粉形态和精细结构进行了研究和描述（Ohashi，1990 a & B）。胡枝子属需要在鸡眼草属和Campylotropis之间有明确的界限。胡枝子属和鸡冠花属中发现了花蜜腺，但在Campylotropis中没有发现（Nemoto & Ohaslii，1988）。根据这一结果，在日本胡枝子属（可能有16种）中，描述了13种的花粉粒，并对这些分类群进行了比较研究（Oliashi，1990 c）。

Pollen morphology and structure of the Japanese Leguminosae were examined by electron nicroscopy, and the results were described with comparison to those of related species in this study. Sophora franchetiana Dunn is a very rare species occurring discontinuously in southern Kyushu and Fukien in southeastern China.Taxonomic relation of this species to others became clear by examining pollen grains which have long colpi, large endoapatures and characteristic structures of tecta which are microperforate or perforate in mesocolpium and perforate, regulate or verrucate near colpus (Hoshi & Ohashi, 1989).All the native Japanese species of Vicia and Maackia were examined and described in pollen morphology and fine structure (Ohashi, 1990 a & b). The genus Lespedeza needed its clear boundary between Kummerowia and Campylotropis. Floral nectaries were found in Lespedeza and Kummerowia, but not in Campylotropis (Nemoto & Ohaslii, 1988). This fact suggest Lespedeza,is distinct and is closer to Kummerowia than Campylotropis.Based on this results, among the native Japanese Lespedeza (may be 16 species), pollen graitis of 13 species were described, and comparative studies of these taxs were made (Oliashi, 1990 c).