PS. 274. 27 May 2010. 2:40 PM. Facing east, Azimuth 70. Pasture 12B. Elevation 937 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, camera above witness. Mesquite alive, small shrubs mainly Krameria but some Calliandra. Ocotillo foreground and background. Cholla and pricky pear cacti. Ephedra right midground. Bouteloua aristidoides, Lehmann lovegrass, Rothrock grama, and tanglehead grasses. Fate of four large ocotillo present in 2007: left plant large in 1948 and alive in 2007 is now dead; left center plant alive now; right center plant remains large in 2010; and far right ocotillo was small in 1948 and now is alive and large. Breezy conditions. Compared to 2007, less grass, and more cholla and Calliandra and Krameria now. M. McClaran photographer, A. Dalke assistant.

PS. 274. 13 March 2016. 2:17 PM. Facing east, Azimuth 90.  Pasture 12B. Elevation 937 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, camera above witness. Mesquite alive, small shrubs mainly Krameria but some Calliandra. Ocotillo foreground and background. Blue palo verde present far right. Cholla and pricky pear cacti. Ephedra right midground. Bouteloua aristidoides, Lehmann lovegrass, Rothrock grama, and tanglehead grasses. Fate of four large ocotillo present in 2007: left plant large in 1948 and alive in 2007 is now dead; left center plant alive now; right center plant is now dead and fallen over; and far right ocotillo was small in 1948 and now is alive and large. Breezy conditions. Compared to 2010, cholla in front right fell over, less grass on road-side of the fence. M. McClaran photographer, K. Hawkes and D. Landreville assistants.

PS. 274. 14 March 2022. 3:34 PM. Facing east, Azimuth 90.  Pasture 12B. Elevation 937 m. ISO 125, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, camera above witness. Mesquite alive, small shrubs mainly Krameria but some Calliandra and few of those flowering. Blue palo verde present far right. Porophyllum and snakeweed present. Ocotillo foreground and background. Cholla and pricky pear cacti. Ephedra right midground. Bouteloua aristidoides, Lehmann lovegrass and threeawns grasses. Fate of four large ocotillo present in 2007: left plant large in 1948 is still dead; left center plant alive and larger than 2016; right center plant is still dead and fallen over; and far right ocotillo was small in 1948 and is alive and larger than 2016. Compared to 2016, three chollas in foreground have died, at least 4 new cholla plants, abundant annual grama grass (Bouteloua aristidoides) from wet summer 2021, added Porophyllum and snakeweed, and lost tanglehead and Rothrock grama. M. McClaran photographer, A. Gorlier assistant.

PS. 274. 27 May 2010. 2:35 PM. Facing south, Azimuth 150.  Pasture 12B. Elevation 937 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, camera above witness. Mesquite alive, small shrubs mainly Krameria and Calliandra with some Zinnia. Midground left is whitethorn acacia, blue paloverde, and catclaw acacia. Cholla, pricky pear, and barrel cacti. Ephedra right midground. Bouteloua aristidoides, Lehmann lovegrass, Rothrock grama, and tanglehead, annual threeawn grasses. Ephedra center distant with barrel cactus. Breezy conditions. One buffelgrass found in wash and pulled. Cholla skeleton in right foreground died between 2007-2010, and it appeared first in 1998 photo. Compared to 2007, less grass and less cholla, but more Calliandra and Krameria now. M. McClaran photographer, A. Dalke assistant.

PS. 274. 20 August 2024 11:30 AM. Facing south, Azimuth 165. Pasture 12B. Elevation 937 m. ISO 100, 35mm focal length, Canon 5D Mark IV Digital Camera. Witness present, camera above witness.  Species census in 40 m2 plot, starting 2 m from camera ending 8 m from camera, right and left boundaries follow the right and left edges of the camera view. The 12 species found in the plot were: Calliandra eriophylla, Machaeranthera tagetina, Portulaca suffrutescens, Aristida spp., Boerhavia coccinea, Chamaesyce florida, Panicum hirticaule, Bouteloua aristidoides, Chamaesyce capitellata, Krameria parvifolia, Opuntia fulgida, and Tidestromia lanuginosa.  M. McClaran photographer, A. Gorlier assistant.