You don't want to miss this.

This Science Cafe is co-sponsored by the Gillespie Museum and the Institute for Water and Environmental Resilience.

The Gillespie Museum Science Café lecture series features interesting speakers presenting about a variety of STEM topics. Cultural credit available for Stetson students!


5:30PM - Social with appetizers and drinks on the Gillespie Museum porch, Museum open

6:00PM - Lecture begins in the RELC


Can't attend in person? Catch the presentation on Facebook Live! No sign in or sign up is necessary to attend virtually.

Science Café: Water Lettuce - Tourist or Cracker?

Water lettuce has one of the widest distributions of any aquatic plant but little is known about its native range. Until recently it was treated as an exotic invasive in Florida. Allen Dray, PhD and Paul Madeira, MS, ecologists at the USDA Invasive Plant Research Laboratory, will present their genetic research looking at the origins of water lettuce in Florida.

Paul is a molecular biologist for the USDA ARS Biological Control Laboratory and has been in the field of aquatic ecology for more than 40 years. His career has included work in species identification/ delineation in fungi, insects and plants; identification of the geographic origins of invasive species; predation on biological control agents; Host-range testing phylogenies; and NextGen population studies.


Allen has been studying the ecology of aquatic organisms for more than 40 years. His research has focused primarily on biological control of invasive species and the genetic ecology of populations. He has been with the USDA for 20 years and is the research leader of the Invasive Plant Research Laboratory. 

Gillespie Museum/RELC
234 E. Michigan Ave., DeLand, FL 32723
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Nov 09, 2023 05:30pm - Nov 09, 2023 07:00pm