Graminoids (Grasses, Sedges, Rushes) ID for Wetlands and Wetland Delineators

Course Overview

This course is designed for wetlands delineators and others needing to recognize and identify sedges, grasses, and rushes in wetlands, especially taxa likely to be seen in the field during wetland delineations. This course is relevant  throughout the United States, including Alaska, and will be taught live online via ZOOM using fresh and prepared, dried specimens (15-30) collected by Thomasson at wetlands and adjacent locations. Specimens will be sent to  participants 7-10 days prior to class for use/reference during and after the course. Participants will also receive a class notebook with exercises describing and reviewing relevant reproductive and vegetative terminology necessary  for identifying species of the Cyperaceae, Juncaceae and Poaceae in any geographic locality and a booklet with numerous, completely labeled, color images of many specimens used in class during live dissections. Participants will  also be sent items such as a mm ruler, dissecting needles and razor knife for use during and after the class.

20 Contact Hours, Instructor: Thomasson.


Tuition cost:

Your Course Includes

Fresh and Dried Specimens and Associated Booklet

Receive fresh and dried specimens and a booklet of color, labeled images illustrating essential graminoid features and characteristics for reference after the course.

Notebook and Dissecting Tools

Your instructor will provide a notebook that will assist you in learning graminoid features used to identify species in any geographic locality. You will also receive disseccting needles, a razor knife, and ruler for use during the class.

Instructor Interaction

The instructor will show live dissection of specimens during the class with ample opportunity for participsnts to ask questions. 

Frequently asked Questions

Where is the specific location or venue for this course?

This course will take place ONLINE via live instruction.

Does this course apply towards my certification program?

Your certificate of completion can be used to document instructional hours received in this topic. You should contact the specific certifying agency or association directly to find out how they will assess or credit this WTI course. Typically, our courses are accepted by all state and national certifying agencies and associations; however, you should confirm that with the specific certification program to which you are applying or renewing.

Course Location

Date Location Register by Location
May 22 – 24, 2024 ONLINE FULL – JOIN WAIT LIST



Dr. Joseph Thomasson is curator emeritus of the herbarium at the Sternberg Museum of Natural History in Hays, KS, and has taught plant identification courses for WTI since 2011. He has taught university courses in agrostology, dendrology and plant taxonomy for more than 30 years, and has conducted plant surveys for many government agencies and private companies.”