Desert pave, no vegetation |
United States, Arizona |
1921-05-25 |
Same desert type, pave, no vegetation |
United States, Arizona |
1921-05-25 |
Veg. at back, Ironwood, Opuntia |
United States, Arizona |
1921-05-26 |
Ironwood, annuals on pave |
United States, Arizona |
1921-05-26 |
C.F. Marbut |
United States, Arizona |
1921-05-26 |
Desert pave, Covillea, Gaertneria |
United States, Arizona |
1921-05-26 |
Desert pave, Covillea, Gaertneria |
United States, Arizona |
1921-05-26 |
Desert pave, soil sampling |
United States, Arizona |
1921-05-26 |
Ironwood, Palo Verde, on desert |
United States, Arizona |
1921-05-26 |
Giant cactus, ironwood, Covillea |
United States, Arizona |
1921-05-26 |
View of desert toward mountains |
United States, Arizona |
1921-05-26 |
Carnegiea, cholla, Isocoma |
United States, Arizona |
1921-05-28 |
Detail of Carnegiea |
United States, Arizona |
1921-05-28 |
Original wall of Casa Grande ruins |
United States, Arizona |
1921-05-28 |
Casa Grande ruin |
United States, Arizona |
1921-05-28 |
Grinding stone, pottery at ruin |
United States, Arizona |
1921-05-28 |
Old compartment of ruin |
United States, Arizona |
1921-05-28 |
Old compound of ruins |
United States, Arizona |
1921-05-28 |
View near ruins, vegetation |
United States, Arizona |
1921-05-28 |
Flower of Carnegiea gigantea |
United States, Arizona |
1921-05-29 |
Detail of Carnegiea |
United States, Arizona |
1921-05-29 |
Cholla, Carnegiea, Isocoma, Covillea, typical of large areas |
United States, Arizona |
1921-05-29 |
Yucca elata on weed grass |
United States, Arizona |
1921-05-31 |
Over grazed desert grassland |
United States, Arizona |
1921-05-31 |
Alkali flat, no plants at all |
United States, Arizona |
1921-05-31 |
Alkali flat, no veg., white alkali |
United States, Arizona |
1921-05-31 |
Grassland with bear grass |
United States, Arizona |
1921-05-31 |
Grassland with bear grass |
United States, Arizona |
1921-05-31 |
Yucca, grassland reduced to weed grass stage |
United States, Arizona |
1921-05-31 |
View of grassland, Boutelouas |
United States, Arizona |
1921-05-31 |
Grassland, rocky hilltops |
United States, Arizona |
1921-05-31 |
Grassland, yucca, agave, bear grass |
United States, Arizona |
1921-05-31 |
Grass, Bouteloua hirsuta, general view |
United States, Arizona |
1921-05-31 |
Grassland with bear grass, Yucca |
United States, Arizona |
1921-05-31 |
Grassland with bear grass |
United States, Arizona |
1921-05-31 |
Yucca plants in fruit |
United States, Arizona |
1921-05-31 |
Prosopis in flower |
United States, Arizona |
1921-06-01 |
Yucca elata, Gutierrezia, grass |
United States, Arizona |
1921-06-01 |
Over grazed grassland with veg. |
United States, Arizona |
1921-06-01 |
Prosopis, Gutierrezia on Mojave loam |
United States, Arizona |
1921-06-01 |
Prosopis in bloom |
United States, Arizona |
1921-06-01 |
Pure Covillea |
United States, Arizona |
1921-06-02 |
Pure Covillea, 11 mi. south |
United States, Arizona |
1921-06-02 |
Panorama, alfalfa and grain fields with cottonwood along Valley. Covillea, desert shrub on hill, mountains beyond |
United States, Arizona |
1921-06-02 |
Panorama, alfalfa and grain fields with cottonwood along Valley. Covillea, desert shrub on hill, mountains beyond |
United States, Arizona |
1921-06-02 |
Panorama, alfalfa and grain fields with cottonwood along Valley. Covillea, desert shrub on hill, mountains beyond |
United States, Arizona |
1921-06-02 |
Cat's claw in bloom |
United States, Arizona |
1921-06-03 |
Apache teepee, soil alkali |
United States, Arizona |
1921-06-03 |
Teepee, cedar tree at right |
United States, Arizona |
1921-06-03 |
Poa, Bouteloua gracilis, yellow pine, Aspen, Douglas fir, near divide |
United States, Arizona |
1921-06-04 |