Graduate Program
Biological Sciences
Degree Name
Master of Science (MS)
Semester of Degree Completion
2013
Thesis Director
Gordon C. Tucker
Thesis Committee Member
Zhiwei Liu
Thesis Committee Member
Barbara S. Carlsward
Abstract
The genus Galeopsis L. of the family Lamiaceae, also known as hemp-nettle, grows naturally in Europe and Asia, with four species naturalized in North America. The number of real species is in doubt, because of conflict over whether certain taxa are species, subspecies, or synonyms. The genus consists of five to eight taxa. I studied flower and leaf size ratios to clarify the distinctions of taxa in Galeopsis. These data were analyzed statistically, using cluster analysis, Principal Components Analysis (PCA), and Analysis of Variance (ANOVA). The results indicated that although some measurements, such as leaf width in G. angustifolia, separated the species from others of the genus, some other character measurements did not provide such clear distinctions (e.g., leaf width in G. bifida and G. tetrahit).
Recommended Citation
Hughes, Michael T., "Morphometric Study of Variation in the Genus Galeopsis (Lamiaceae)" (2013). Masters Theses. 1177.
https://thekeep.eiu.edu/theses/1177
