American botanist at Milwaukee Public Museum (WI USA). Best known for his studies on the taxonomy of Isoetes, pteridophytes, and lycophytes.

Awarded BA from University of Missouri (USA) and his MA & PhD in botany from Southern Illinois University in Carbondale (IL USA).

1970-1971 served in the US Army, sergeant in the infantry in Viet Nam. Awarded a purple hear and a bronze star.

Began his career at MPM, was there for 30 years. Briefly moved to Old Dominion University in Norfolk, VA and then became a Program Officer at the National Science Foundation in Arlington, VA.

American botanist, evolutionary biologist.

1969 received BA in biology from University of Virginia (USA).

1969-1976 he taught middle school science and mathematics at various schools in Virginia (USA)

1973 received a MA in Secondary Education and another MA in biology in 1978 from the University of Virginia (USA). Received PhD in botany from Miami University (USA) in 1983. His PhD invovled the genetics of "Appalachian Asplenium complex."

Following his PhD, Werth went to teach at the University of Kansas. 1987 appointed associate professor and curator of RL Reed Herbarium in Biological Sciences at Texas Tech University.