He is currently an associate professor within the Department of Biological Science at Florida State University (FSU), and has been director of FSU's Robert K. Godfrey Herbarium since August 2003.
Ia sekarang adalah profesor asosiasi di Jurusan Ilmu Biologi di Florida State University (FSU), dan menjadi direktur Robert K. Godfrey Herbarium dari FSU sejak Agustus 2003.