Dr. Timothy A. Block

The John J. Willaman Chair of Botany

My research interests are in the flora of Pennsylvania and in GIS mapping of plant distribution.

Dr. Ann F. Rhoads

Senior Botanist

My research interests are focused on the floristics of Pennsylvania. I want to document the natural vegetation of the state and better understand historical and contemporary influences that have shaped the patterns of plant distribution we see today.

Dr. Michael B. Burgess

Postdoctoral Research Botanist

My current research focuses on the systematics and evolution of Amelanchier, a genus of the Rosaceae (Rose Family). Amelanchier is known for significant taxonomic complexity, and has long perplexed botanists. This complexity results from the interplay of apomixis (asexual seed production), polyploidy, and hybridization.

Emma Williams

The Eli Kirk Price Endowed Flora of PA Intern

Stephanie Wilson

The John J. Willaman & Martha Haas Valentine Endowed Plant Protection Intern