Alan Cressler:
Actinomycetes Bacteria Colonies, Lula Falls Cave, Lookout Mountain, Lula Lake Land Trust, Walker County, Georgia 2
Alan Cressler:
Actinomycetes Bacteria Colonies, Lula Falls Cave, Lookout Mountain, Lula Lake Land Trust, Walker County, Georgia 3
Alan Cressler:
Actinomycetes, La Guarida del Diablo, Habersham County, Georgia 1
Alan Cressler:
Actinomycetes, La Guarida del Diablo, Habersham County, Georgia 2
Alan Cressler:
Bacteria Colonies, Kaumana Cave, Kaumana Caves County Park, South Hilo District., Hawaii County, Hawaii 1
Alan Cressler:
Bacteria Colonies, Kaumana Cave, Kaumana Caves County Park, South Hilo District., Hawaii County, Hawaii 2
Alan Cressler:
Beggiatoa alba (possible identification) Well, 34G007, Saint Andrews Picnic Area, Jekyll Island, Glynn County, Georgia 1
Alan Cressler:
Beggiatoa alba (possible identification), Sulphur Spring, Blount County, Alabama 2
Alan Cressler:
Beggiatoa alba (possible identification), Sulphur Spring, Blount County, Alabama 5
Alan Cressler:
Beggiatoa alba (possible identification), Sulphur Spring, Blount County, Alabama 8
Alan Cressler:
Beggiatoa alba (possible identification), unnamed tributary of Severn Run, Central Sanitation Project, below the Step Pool Storm Conveyance (SPSC) system, near Benfield, Anne Arundel County, Maryland 1
Alan Cressler:
Beggiatoa alba (possible identification), unnamed tributary of Severn Run, Central Sanitation Project, below the Step Pool Storm Conveyance (SPSC) system, near Benfield, Anne Arundel County, Maryland 2
Alan Cressler:
Cryptobiotic soil crust, Natural Bridges National Monument, San Juan County, Utah 1
Alan Cressler:
Cryptobiotic soil crust, Natural Bridges National Monument, San Juan County, Utah 2
Alan Cressler:
Cryptobiotic soil crust, Natural Bridges National Monument, San Juan County, Utah 3
Alan Cressler:
Cryptocrystalline Iron Oxide, Riva 400 Site, Annapolis, Anne Arundel County, Maryland 3
Alan Cressler:
Leptothrix discophora (possible identification), DuPuis Wildlife and Environmental Area, South Florida Water Management District, Martin County, Florida 1
Alan Cressler:
Leptothrix discophora (possible identification), DuPuis Wildlife and Environmental Area, South Florida Water Management District, Martin County, Florida 2
Alan Cressler:
Leptothrix discophora (possible identification), DuPuis Wildlife and Environmental Area, South Florida Water Management District, Martin County, Florida 3
Alan Cressler:
Microcystis, Lake Okeechobee, Hendry County, Florida 1
Alan Cressler:
Microcystis, Rim Canal, Lake Okeechobee, Clewiston, Hendry County, Florida 1
Alan Cressler:
Microcystis, Rim Canal, Lake Okeechobee, Clewiston, Hendry County, Florida 2
Alan Cressler:
Nostoc commune, Cedar Glade No. 6, Chickamauga Limestone, Chickamauga and Chattanooga National Military Park, Catoosa County, Georgia 1
Alan Cressler:
Nostoc commune, Hiawassee Road Limestone Glade, Murray County, Georgia 1
Alan Cressler:
Nostoc commune, Hiawassee Road Limestone Glade, Murray County, Georgia 2
Alan Cressler:
Nostoc commune, Hiawassee Road Limestone Glade, Murray County, Georgia 3
Alan Cressler:
Sulfur-Oxidizing Bacteria, Sulphur Spring, Blount Springs, Blount County, Alabama 1
Alan Cressler:
Sulfur-Oxidizing Bacteria, Sulphur Spring, Blount Springs, Blount County, Alabama 2
Alan Cressler:
Sulfur-Oxidizing Bacteria, Sulphur Spring, Blount Springs, Blount County, Alabama 3
Alan Cressler:
Sulfur-Oxidizing Bacteria, Sulphur Spring, Blount Springs, Blount County, Alabama 4
