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Vascular Plants of Jokers Hill

Updated: December 15, 2021

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King Township, Regional Municipality of York, Ontario
(second edition, revision 1)

Tubba Babar, C. Sean Blaney, and Peter M. Kotanen*

Department of Ecology & Evolutionary Biology
University of Toronto Mississauga
3359 Mississauga Road, Mississauga, ON
Canada L5L 1C6

Atlantic Canada Conservation Data Centre, P.O. Box 6416, Sackville NB, Canada E4L 1G6

*Correspondence author. e-mail: peter.kotanen@utoronto.ca

The first edition of this list was compiled by C. Sean Blaney and was published as an appendix to his M.Sc. thesis (Blaney C.S. 1999. Seed bank dynamics of native and exotic plants in open uplands of southern Ontario. University of Toronto. https://tspace.library.utoronto.ca/handle/1807/14382/). It subsequently was formatted for the web by P.M. Kotanen and made available on the Koffler Scientific Reserve website (http://ksr.utoronto.ca/), where it was revised periodically to reflect additions and taxonomic changes. This second edition represents a major revision reflecting recent phylogenetic and nomenclatural changes and adding additional species; it will be updated periodically.

This property was donated to the University of Toronto in 1995. This list is based on observations at this site by C.S. Blaney, P.M. Kotanen, and many others beginning in 1997; a partial list of contributors may be found in Blaney (1999). Care has been taken to include only species which have been identified with certainty, and numerous experts have assisted with observations and difficult identifications, notably P. Ball and M.T.J. Johnson (University of Toronto), T. Dickinson and J. Bull (Royal Ontario Museum), A. Reznicek (University of Michigan), and W. Wagner (United States National Herbarium). Voucher specimens have been collected for many difficult identifications. Approximately 160 species (indicated by †) are documented by specimens donated to the Royal Ontario Museum / University of Toronto herbarium (TRT); numerous additional species are represented in the Koffler Scientific Reserve on-site herbarium. The phylogenetic classification of ferns and allies follows the Pteridophyte Phylogeny Group (PPG I 2016: Journal of Systematics and Evolution 54, 563-603), classification for gymnosperms is based on Christenhusz et al. 2011 (Phytotaxa 19, 55-70), and classification for angiosperms follows the Angiosperm Phylogeny IV system (APG IV 2016: Botanical Journal of the Linnean Society 181, 1-20). Scientific and English nomenclature follow the Database of Vascular Plants of Canada (VASCAN) (https://data.canadensys.net/vascan/); VASCAN or the first edition of this list may be consulted for synonymy.

This list includes all species known to be growing outside of cultivation within the Koffler Scientific Reserve during the observation period. This includes a number of tree species which are questionably established, but nonetheless are widely planted on the property. Also listed are 13 native species found in land adjacent to the Jokers Hill property, but not yet found on the site (scientific name preceded by “*”). A total of 639 species and hybrids are listed; 450 taxa listed by VASCAN as native to Ontario (those listed in bold typeface) and 189 are considered non-native (listed in regular typeface). Not all listed species still may occur on-site (e.g., American Ginseng – not seen since 2008). Information on any additional species (preferably with photographs or specimens) would be welcomed by the authors.

Clicking on the latin binomial of each species will bring you to GBIF occurrence records for that species.