Plate 20 
A. Flood-plain in Bear Cafion at 6,000 feet, with Pinus arizonica, Populus jamesii, an open carpet of 
summer-active herbaceous perennials, and Sporobolus confusus. 
B. Streamway in Bear Cafion at 6,000 feet, with Pinus arizonica, Juglans rupestris, and Vitis arizonica. 
