Native grasses was mentioned in another thread. This site is pretty descriptive:
http://www.usask.ca/agriculture/plantsci/classes/range/index.html
although not quite as user friendly unless you know the Latin Names.
http://www.agr.gov.sk.ca/DOCS/crops/forage_pasture/forage_management_production/msr6.asp?firstPick=Crops&secondPick=Forage/Pasture&pick=&child=1
- Above lists by a common name.
http://www.usask.ca/agriculture/plantsci/classes/range/index.html
although not quite as user friendly unless you know the Latin Names.
http://www.agr.gov.sk.ca/DOCS/crops/forage_pasture/forage_management_production/msr6.asp?firstPick=Crops&secondPick=Forage/Pasture&pick=&child=1
- Above lists by a common name.