Red Earth Seeds - Research Links
texaswildflowerpictures.com
foragingtexas.com
pbase.com (an Oklahoma List)
Oklahoma Vascular Plants Database
plants.usda.gov
hort.uconn.edu
wildflower.org/plants
garden.org/plants
woodyplants.cals.cornell.edu
davesgarden
discoverlife.org Online Key
USwildflowers.com
wildflower.org
gobotany.com
minnesotawildflowers
mywildflowers.com
wildflowers-and-weeds.com
kansas - kswildflower.org
Weeds in Japan - seed image database
Philipine/Chinese/English database