Bouteloua gracilis - lab studies |
United States, Arizona, Navajo Reservation |
1951-11-01 |
Copy of photo-Potato Day at A.S. & Rco. Demonstration Farm |
United States, Utah |
1951-08-31 |
Duplicate of E-3-1934 |
United States, Arizona, Saguaro National Monument |
1951-05-11 |
Duplicate of I-5-1926, Dudleya |
Mexico, Sonora |
1951-05-27 |
Duplicate of T-6-1935 |
United States, Arizona, Saguaro National Monument |
1951-05-11 |
Eurotia lanata - lab comparison of plants grazed, ungrazed |
United States, Arizona, Navajo Reservation |
1951-11-01 |
Here Oak is forest but floor has not yet passed to grasses |
United States, California, Hope Ranch |
1951-07-25 |
Lab study of Hilaria Jamesii |
United States, Arizona, Navajo Reservation |
1951-11-01 |
No grass in fore, but grassy hill visible at center, Here Oak is forest but floor has not yet passed to grasses |
United States, California, Hope Ranch |
1951-07-24 |
North slope of Pass, Umbellularia californica, Quercus etc |
United States, California, San Marcos Pass |
1951-07-12 |
Open stand of Quercus agrifolia |
United States, California, San Marcos Pass |
1951-07-12 |
Sporobolus airoides - lab study |
United States, Arizona, Navajo Reservation |
1951-11-01 |
This should be in line above, Oaks, grass etc. As cover opens and passes towards savanna |
United States, California, San Marcos Pass |
1951-09-12 |
Typical of Grama and Hilaria |
United States, Arizona, Navajo Reservation |
1951-11-01 |
Umbellularia californica, Quercus, etc. |
United States, California, San Marcos Pass |
1951-07-12 |