Agrocybe praecox - Photographs of the Spring Agaric, its description and other information. - http://www.first-nature.com/fungi/id_guide/strophariaceae/agrocybe_praecox.htm
Bolbitius vittelinus - Several photographs and a description of the Egg Yolk Fungus. - http://www.first-nature.com/fungi/id_guide/strophariaceae/bolbitius_vittelinus.htm
Panaeolus semiovatus - Several photographs of this inedible species and an identification guide. - http://www.first-nature.com/fungi/id_guide/coprinaceae/panaeolus_semiovatus.htm
Gastrocybe lateritia - Article by Heather Hallen and Tom Volk on this fungus and its close relative Conocybe lactea, both of which are often found growing together on lawns. - http://botit.botany.wisc.edu/toms_fungi/sep2003.html
Conocybe - Photographs and information on this genus of about 58 species. - http://www-biol.paisley.ac.uk/bioref/Fungi_basidiomycetes/Conocybe.html
Agrocybe vervacti - Photograph and description of this species often found growing on lawns. - http://www.uoguelph.ca/~gbarron/GILL%20FUNGI/BROWN/agrocybe.htm