Dissertation Research: Systematics of Aralia (Araliaceae)

研究生温军女士将在俄亥俄州立大学托德·斯图西博士的指导下，准备对开花植物属约35种植物进行现代分类处理。该物种分布于整个北美和东亚，在历史生物地理学中提出了一个有趣的问题。有关形态和解剖学的新数据将从标本馆标本和即将在中国进行的新收藏中获得；这名学生已经在墨西哥和美国完成了野外工作。此外，染色体分析和花形态数据将被用来测试与相关属的关系，如五倍子属和石杉属。修订了该属的分类，提供了所有物种的一致划界和可靠的识别检索表，绘制了地理分布图，并总结了生态学和生殖生物学的知识，这将有助于进一步了解北半球分离植物分布的广泛格局。

Graduate student Ms. Jun Wen, under the faculty guidance of Dr. Tod Stuessy of Ohio State University, will prepare a modern taxonomic treatment of the estimated 35 species of the flowering plant genus Aralia. The species occur throughout North America and in eastern Asia, and present an interesting problem in historical biogeography. New data on morphology and anatomy will be acquired from herbarium specimens and from new collections to be made in China; field work has already been completed in Mexico and in the United States by the student. In addition, chromosome analyses and floral-morphological data will be used to test relationships with associated genera such as Pentapanax and Sciadodendron. A revised taxonomy of the genus, providing consistent delimitation of all species and reliable identification keys, mapping geographic distributions, and summarizing knowledge of ecology and of reproductive biology, will help further understanding of a widespread pattern of disjunct plant distribution in the northern hemisphere.