North Coast CNPS

Past events

Workshop: A Primer on Sedges: Saturday, March 17, 2018

Instructor: Gordon Leppig

Target Audience: Professional and student botanists, consultants, regulators, and ecologists. Participants should have knowledge of basic plant terminology and use of dichotomous keys.

Participants will gain proficiency in:

  • Basic sedge terminology, morphology, and ecology.
  • Keying terminology and techniques using The Jepson Manual, 2nd Edition and other references.
  • Sight recognition of some ecologically dominant sedges based upon habitat.
  • Appreciation for the beauty, diversity, complexity, and ecological value of sedges.
  • A richer understanding of some of northern California’s most common and rare sedges.

Registration and Cost: $100 for CNPS members; $130 for non-members.

Register: Fill in the form below.

The last day to register is February 28.

If you are not a CNPS member, go to to join now and save!

Description: This is an intensive introductory/intermediate course on sedge identification and keying with an emphasis on species occurring in Northern California and the Pacific Northwest. The workshop starts with an introductory review of sedge taxonomy, ecology, biogeography, and essential sedge keying terminology and morphology.  The rest of the day will be guided dissection and keying of specimens in the laboratory using a microscope and the Jepson Manual 2nd Edition.  Keying will be punctuated with guidance and commentary on keying groups and species characteristics. Many specimens will be available for review, dissection, and comparison. This workshop is geared for beginner and intermediate caricologists, but familiarity with keying plants in the Jepson Manual is required.  The emphasis will be on learning some of the most common and rare sedges in northern California.

Venue:  Humboldt State University, Arcata, CA.  Directions and additional information will be provided to registered participants about a week before the workshop.

Schedule: 9:00am to 5:00pm (1 Hr. lunch). Please arrive early to get setup.  

Materials Required: Please bring...

    • Quality dissecting equipment, including extra-fine forceps and a metric ruler
    • Hand lens
    • Notebook and writing implements
    • Lunch (or find lunch nearby in Arcata)
  • The Jepson Manual, 2nd Edition
  • Field Guide to the Sedges of the Pacific Northwest 1st or 2nd Edition (recommended)

Materials Provided: CNPS will provide handouts, diverse material for keying and comparison, and dissecting scopes. Coffee, tea, fruit, and baked goods will be available during the morning session.

About the Instructor:

Gordon Leppig is a Senior Environmental Scientist with the California Department of Fish and Wildlife and was for 10 years the HSU Vascular Plant Herbarium collections manager.  He has been a student of sedges for over 20 years and has previously taught plant workshops for CNPS, The HSU Natural History Museum, and the Jepson Herbarium.

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