The vegetation of a desert mountain range as conditioned by climatic factors . SHREVE Plate 20. A. Flood-plain in Bear Canon at 6,000 feet, with Pinus arizonica, Populus jamesii, an open carpet ofsummer-active herbaceous perennials, and Sporobolus confusus.

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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1915