Sketch of The Flora of Death Valley, California
SINCE Death Valley, as shown by the published records of the Weather Bureau,2 is the hottest and dryest area known in the United States, and probably in the world, and since the observa- tions of the Death Valley Expedition showed that these extreme climatic conditions are reflected in its vegetable life, a description of this flora has an interest even greater than that incited by the average desert vegetation.
Cactus and Succulent Journal 1943-12: Vol 15 Iss 12
NOTES ON CACTI OUT OF DOORS
North Latitude 38°—23’—20”
West Longitude 122°
By F. B. Noyes
In this particular spot of our U. S. A., which lies on a shelf sloping south toward the Vaca Valley in Solano County, California, cacti have been grown out of doors for six years with considerable success. Several drought resistant trees and shrubs were also doing well until the wet winter of 1939-'40.
Then two of the best, Atriplex hymenelytra and Fremontia mexicana, succumbed to the excess moisture.
Contribution à l'étude de la végétation du grand bassin américain
During the winter of December, the studies I am pursuing on the phytogeography of the deserts of the Northern Hemisphere led me to travel through the southwest of Arizona, the great expanse of Gila Desert, which American geographers have called the "Gila Desert," but which European maps generally call the "Gila Desert." I have already determined elsewhere the principal plant formations found in this part of the Great Basin, and I will only briefly summarize my itinerary here before giving a list of the plants I was able to collect.
Titratable Acids in Opuntia ficus indica L.
Accumulation of acidity in spiny and spineless Opuntia joints jluctuated daily due to crassulacean acid metabolism (CAM) in Golan Height and coastal plain. The acidity reached higher concentrations in the young joints, especially during early morning hours, before the plants were exposed to sunlight. Changes in acidity were more pronounced in the chlorenchyma than in the water-accumulating tissues.