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Started for Lordsburg at 2:30 and colored in zone map as we went. Found nearly the whole set of Lower Sonoran zone plants continuous all the way in the valleys except on flats or basin bottoms where grass was the usual dominant vegetation. On dry mesas the Creosote, Mesquite, ephedra trifurcata?, Tessaria gluluosa?, and Yucca radiosa were the conspicuous species. At Lordsburg a more complete list of Lower Sonoran species was secured and a whole broad valley mapped as Lower Sonoran. Creosote bush is the dominant shrub over miles of dry mesa at Lordsburg & up several hundred feet above, even on gradual north slopes. It is even difficult to get many Upper Sonoran species for the north slopes of the Victorio & Pyramid Mts;, low, bare ranges with scarcely any vegetation. I merely left the north slopes blank as of probably Upper Sonoran one climate conditions

Transcription Notes:
Tessaria Glucosa?