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As a biology major at the University of Guelph I became interested in micromorphology through a course offered by the botany department. The course, microtechniques (17-414; BOT4140), introduced me to Scanning Electron Microscopy (SEM), specialized light microscopy, and Transmission Electron Microscopy.

Both SEM and light microscopy were used extensively during my Master's thesis (Floral Development of 10- and 20-stamen morphotypes of Crataegus section Douglasii). My thesis was conducted in the University of Toronto Department of Botany under the supervision of Dr. Timothy A. Dickinson. Tim introduced me to the use of morphometrics as a way to describe and quantify shape variation within developing flowers of Crataegus section Douglasii. The results of this research are published in the American Journal of Botany (Evans. and Dickinson. 1996)

Publications

Evans, RC, L Alice, CS Campbell, EA Kellogg & TA Dickinson. in prep. Characterization and phylogenetic utility of the "waxy" gene (GBSSI) in the Rosaceae.

Evans, RC & TA Dickinson. 1999. Floral ontogeny and morphology in subfamily Amygdaloideae (Rosaceae). International Journal of Plant Sciences vol. 160(5): 955-979.

Evans, RC & TA Dickinson. 1999. Floral ontogeny and morphology in subfamily Spiraeoideae (Rosaceae). International Journal of Plant Sciences vol. 160(5): 981-1012.

Evans, RC & TA Dickinson. 1996. Black-fruited North American Hawthorns. II. Early floral development of 10- and 20-stamen morphotypes. Amer. J. Bot. 83: 961-978.



Cicada minutes after "birth"



Magnolia flower (partially dissected) and fruit


Physocarpus fruits (follicles) and seeds


Raspberry (Rubus) flower and fruits


Strawberry (Fragaria) flowers


Rose (Rosa) flower and fruit (rose hip)



Before


After

All photographs on these pages copyright © Rodger Evans 1999.

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© 1999 Botany Department, University of Toronto.

Please send your comments to revans@maine.edu; last updated 1-November-99