在墨西哥时两个人都是在4年级退的学，现在都是居美外侨。
Both left school in the fourth grade in Mexico and are resident aliens in the United States.
结果表明，18个居群可划分为4类，它们分别对应于现知的4个分类学种，而与数值分类学研究中的Q分析结果基本一致；
The results suggest that the 18 populations could be classified into 4 groups corresponding to 4 taxonomic species. This is in conformity with the results of Q cluster analysis.
结果表明：该属植物种子微形态特征在种的水平上具有分类学意义；同种的不同地方居群间基本类型一致，但也存在一定程度的变异。
The results show that the seeds micro-morphological characteristics have taxonomic and significance at species level and there is little variation existing in different populations.
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