Acarospora spp. (on rocks, both yellow and brown species)
Aspcilia spp. (on rocks)
Buellia spp. (on rocks)
Caloplaca holocarpa (on Prosopis)
Caloplaca subsoluta (on rocks)
Caloplaca spp. (including squamosa and holocarpa group on rocks)
Candelina mexicana (common, on rocks – bright yellow-gold)
Candelaria concolor (on trees, esp. Prosopis)
Candelariella sp. (on rock, bright yellow)
Canoparmelia texana (on Prosopis and Acacia)
Chrysothrix candelaris (on Acacia)
Cladonia sp. (on soil)
Coccocarpia (seen only – couldn’t collect)
Collema cf. texanum (on shaded rocks)
Dermatocarpon cf. americanum (on rock)
Dimelaena oreina (common on rocks)
Flavopunctelia flaventior (on shaded rock in canyon, may be on tree)
Flavopunctelia praesignis (on trees)
Flavopunctelia soredica (common on Prosopis and Acacia)
Haematomma fenzalianum (white with red apothecia)
Heteroderma spp. (on trees and rocks)
Hyperphyscia syncolla (on trees)
Lecanora pseudistera (on rock)
Lecidella sp. (on rock)
Lepraria sp. (on rock)
Lepraria sp. (on bark)
Leptogium cf. azureum (on deeply shaded rocks in canyon)
Parmotrema austrosinense (common on both rocks and trees)
Parmotrema spp.
Peltula euploca (on rock)
Peltula farinosa (on vertical shaded rock)
Peltula impressa (on rocks)
Peltula obscurans (on soil)
Pertusaria moreliensis (on rock, in canyon)
Pertusaria tejocotensis (on rock, in canyon)
Pertusaria sp. (on rock)
Physcia caesia (on rock)
Physcia cf. mexicana (common on trees)
Physcia sp. (on rock)
Physconia sp. (on rock)
Placidium sp. (on rock)
Psora icterica (on soil)
Punctelia perreticulata (on trees)
Punctalia hypoleucites (on Acacia)
Pyxine petricola (on rocks)
Teloschistes chrysophthalmus (on cholla-Opuntia)
Usnea ambyloclada (on rocks)
Usnea cirrosa (on Acacia)
Usnea sp. (on shrubs)
Xanthoparmelia neopropaguloides (on shaded rock)
Xanthoparmelia spp. (probably X. mexicana & X. lineola – common on rock)