Field Guides:

Plants

• Plants of the Pacific Northwest Coast: Washington, Oregon, British Columbia and Alaska by Jim Pojar and Andy MacKinnon
• Plants of Northern British Columbia by Andy MacKinnon, Jim Pojar, Ray Coupe
• Plants of Southern Interior British Columbia and the Inland Northwest by Roberta Parish, Ray Coupe, Dennis Lloyd
• Alpine Plants of the Northwest: Wyoming to Alaska by Jim Pojar and Andy MacKinnon
• Plants of Vancouver and the Lower Mainland by Collin Varner (2002)
• Wildflowers of the Pacific Northwest by Phyllis Gustafson and Mark Turner
• Medicinal Plants of the Pacific West by Michael Moore

Bryophytes (mosses and liverworts)

• Schofield, W.B. 2002. Field Guide to the Liverwort Genera of Pacific North America. University of Washington Press.
• Schofield, W.B. 1992. Some Common Mosses of British Columbia (2nd ed). Royal British Columbia Museum, Victoria

Fungi

• Mushrooms of the Pacific Northwest by Steve Trudell and Joe Ammirati
• All That the Rain Promises and More…: A Hip Pocket Guide to Western Mushrooms by David Arora

Floras:

Plants

• Illustrated Flora of British Columbia by BC Ministry of Sustainable Resource Management and the BC Conservation Data Centre, 8 volume series. (1998)
• Flora of the Pacific Northwest: An Illustrated Manual by C. Leo Hitchcock and Arthur Cronquist

Algae

• Keys to the Seaweeds and Seagrasses of Southeast Alaska, British Columbia, Washington, and Oregon by  Paul W Gabrielson and  Sandra C Lindstrom, Jan 2018.

• Marine Algae of California by Isabella A. Abbott and George J. Hollenberg (I think this is used by phycologists in BC / the PNW?)

Online Resources:

• E-Flora BC is a biogeographic atlas of the vascular plants, bryophytes, lichens, algae, fungi and slime molds of British Columbia.
• Flora of North America
• The Burke Museum in Natural History and Culture Herbarium 

Herbarium manuals for collecting and processing:

• Collecting and preserving plant specimens, a manual. Queensland Herbarium. 2016.
• Techniques and Procedures for Collecting, Preserving, Processing, and Storing Botanical Specimens. British Columbia Ministry of Forests. 1996.
• Field Techniques Used by Missouri Botanical Garden (1992)
• Preparation of Plant Specimens for Deposit as Herbarium Vouchers Florida Museum of Natural History (2020)

Online tutorial videos:

• Botany Foray 2012 – Jeannette Whitton – How to collect plants for the museum
  This short video give a glimpse of how botanists collect and press plants in the field.
• RBGE Herbarium: Basic Plant Collecting and Pressing