Fungi- http://mushroomobserver.org/
Apps:
Mushrooms ID North America- https://itunes.apple.com/US/app/id913987701?mt=8
Pictures of Texas Mushrooms- http://www.asergeev.com/pictures/k/Texas_mushrooms.htm
Texas Mushrooms: A Field Guide, Metzler and Metzler, UT Press, 2013
Mushrooms of the Gulf Coast States, Bessette, Bessette, and Lewis, UT Press, July 2019