. Desert botanical laboratory of the Carnegie institution. Desert Botanical Laboratory of the Carnegie Institution; Botanical laboratories. Carn. Inst. Wash. Pi i-.' XIII. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Coville, Frederick V. (Frederick Vernon), 1867-1937; MacDougal, Daniel Trembly, 1865-1958. Washington, U. S. A. , The Carnegie institution

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