The following provides a list of references that I have or use for identification purposes.
Blouin, Glen. An Eclectic Guide to Trees, East of the Rockies. The Boston Mills Press. 2001
Brown, Lauren. Grasses, An Identification Guide. Lauren Brown. 1979
Brown, Lauren, Ted Elliman. Grasses, Sedges, Rushes, An Identification Gide. Yale University Press. 2020
Cobb, Boughton. A Field Guide to the Ferns. Houghton Mifflin Company. 1963
Great Plains Flora Association. Flora of the Great Plains. University Press of Kansas. Lawrence, Kansas. 1986, 1990
Harms, V.L. A. L. Leighton, M.A. Vetter. Rushes, Bulrushes & Pondweeds plus the remaining Monocots of Saskatchewan, Fascicle 6. Flora of Saskatchewan Association 2018
Harris, James G., Melinda Woolf Harris. Plant Identification Terminology. Spring Lake. 2001.
Hipp, Andrew L., Field Guide to Wisconsin Sedges. University of Wisconsin Press. 2008
Hosie, R.C. Native Trees of Canada, Fitzhenry & Whiteside Limited. 1979.
Jenkins, Jerry. Woody Plants of the Northern Forest, Quick Guide. Cornell University Press
Jenkins, Jerry. Sedges of the Northern Forest. Cornell University Press, 2019
Johnson, Derek, Linda Kershaw, Andy MacKinnon, Jim Pojar. Plants of the Western Boreal Forest & Aspen Parkland Lone Pine Publishing. 1995
Lahring, Heinjo. Water and Wetland Plants of the Prairie Provinces. Canadian Plains Research Centre. 2003
Leighton, Anna L. Sedges (Carex) of Saskatchewan, Flora of Saskatchewan Fascicle 3. Flora of Saskatchewan Association 2012
Leighton, Anna L., Vernon L. Harms. Grasses of Saskatchewan, Flora of Saskatchewan Fascicle 4. Flora of Saskatchewan Association 2014
Little, Elbert L. The Audubon Society Field Guide to North American Trees, Eastern Region. Alfred A. Knopf. 1986
Looman, J., K.F. Best. Budd's Flora of the Canadian Prairie Provinces Canadian Government Publish Centre. 1979.
National Audubon Society. Wildflowers of North America. Knopf 2023
Niering, William A. The Audubon Society Field Guide to North American Wildflowers Eastern Region. Alfred A. Knopf, Inc. 1983.
Oswald, Edward T., Frank H. Nokes. Field Guide to the Native Trees of Manitoba Manitoba Natural Resources Forestry. 1998.
Petrides, George A. A Field Guide to Trees and Shrubs. Houghton Mifflin Company. 1972
Scoggan, H.J. Flora of Manitoba National Museum of Canada Bulletin No. 140, 1957.
Scoggan, H.J. The Flora of Canada National Museums of Canada, Publications in Botany, No. 7(1-4), 1978.
Smith, Welby R. Sedges and Rushes of Minnesota. University of Minnesota Press 2019
Vance, F.R., J. R. Jowsey, J.S. McLean, F.A. Switczer. Wildflowers Across the Prairies Greystone Books. 1999
Conard, Henry S., Paul L. Redfearn. how to know the mosses and liverworts, WCB/McGraw-Hill. 1979
Ireland, R. R. Moss Flora of the Maritime Provinces. National Museums of Canada Publications in Botany No. 13. 1982.
Ireland, Robert R., Gilda Bellolio-Trucco. Syllogeus 62 Illustrated Guide to Some Hornworts, Liverworts and Mosses of Eastern Canada, National Museums of Canada. 1987
Jenkins, Jerry. Mosses of the Northern Forest, Quick Guide. Cornell University Press, 2020
Johnson, Derek, Linda Kershaw, Andy MacKinnon, Jim Pojar. Plants of the Western Boreal Forest and Aspen Parkland, Lone Pine Publishing, 1995.
McKnight, Karl B., Josheph R. Rohrer, Kirsten McKnight Ward, Waren J. Perdrizet. Common Mosses of the Northeast and Appalachians. Princeton University Press. 2013.
Pope, Ralph, Mosses, Liverworts, and Hornworts, A field guide to common bryophytes of the northeast.Cornell University Press. 2016
Vitt, Dale H., Janet E. Marsh, Robin B. Bovey. Mosses Lichens and Ferns of Northwest North America, Lone Pine Publishing. 1988
Brodo, I. M., Sharnoff, S. D., and Sharnoff, S. Lichens of North America. Yale University Press, 2001. (Also see updated Keys)
De Vries, Bernard. Getting to know Saskatchewan Lichens. Nature Saskatchewan, 2011
Hale, Mason E. how to know the lichens Wm. C. Brown Company Pub., 1979
Hinds, James W., Patricia L. Hinds. The Macrolichens of New England. New YorkBotanical Garden Press, 2007
Johnson, Derek, Linda Kershaw, Andy MacKinnon, Jim Pojar. Plants of the Western Boreal Forest and Aspen Parkland, Lone Pine Publishing, 1995.
McMullin, R. Troy. Lichens, The Macrolichens of Ontario and the Great Lakes Region of the United States. FireFly Books, 2023
McMullin, Troy, Frances Anderson. Common Lichens of Northeastern North America. New York Botanical Garden Press. 2014
Vitt, Dale H., Janet E. Marsh, Robin B. Bovey. Mosses Lichens and Ferns of Northwest North America, Lone Pine Publishing. 1988
Walewski, Joe. Lichens of the North Woods. Kollaath+Stensaas Publishing, 2007
Arora, David. Mushrooms Demystified. Ten Speed Press. 1979
Barron, George. Mushrooms of Ontario and Eastern Canada.Lone Pine. 1999
Groves, J. Walton. Edible and Poisonous Mushrooms of Canada. Agriculture Canada 1979
Miller, Orson K. Hope H. Miller. North American Mushrooms, A field guide to edible and inedible fungi. Falcon Guide, 2006
National Audubon Society. Mushrooms of North America. Knopf 2023
Schalkwijk-Barendsen, Helene M.E. Mushrooms of Western Canada. Lone Pine 1991
Since some keys are old and names change over time I use some of the following sources to cross-check or confirm synonyms and current names. Once names are confirmed I use images online from reputable sources for specific species.
Manitoba Plant List 2024 - Manitoba Conservation Data Centre
Flora of North America, Key to the Moss Genera of North America North of Mexico
A Perspective Oriented Guide for the Identification of North American Bryophyte Genera