Alan Cressler:
Adiantum capillus-veneris, Maidenhair Spring, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Adiantum capillus-veneris, Maidenhair Spring, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 2
Alan Cressler:
Adiantum capillus-veneris, Maidenhair Spring, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 3
Alan Cressler:
Agave lechuguilla, Chihuahuan Desert, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Agave lechuguilla, Chihuahuan Desert, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 2
Alan Cressler:
Agave lechuguilla, Chihuahuan Desert, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 3
Alan Cressler:
Anemia mexicana, Oak Canyon, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Aphonopelma hentzi (likely identification), Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Argyrochosma microphylla, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Argyrochosma microphylla, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 2
Alan Cressler:
Blue Spring, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Blue Spring, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 2
Alan Cressler:
Canthon imitator (possible identification), Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 2
Alan Cressler:
Myriopteris scabra, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Chihuahuan Desert, Devils River Valley, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Chihuahuan Desert, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Chlosyne theona, on Eysenhardtia texana, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Devil's River, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Dolan Creek, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Dolan Falls, Devil's River, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Dolan Falls, Devil's River, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 2
Alan Cressler:
Dolan Falls, Devil's River, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 3
Alan Cressler:
Euglandina singleyana, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Eysenhardtia texana, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Eysenhardtia texana, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 2
Alan Cressler:
Fouquieria splendens, Chihuahuan Desert, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Helicina orbiculata, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Helicina orbiculata, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 2
Alan Cressler:
Herichthys cyanoguttatus, Dolan Creek, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Houstonia acerosa (Hedyotis acerosa), Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
