. Carnegie Institution of Washington publication. BRITTON AND ROSE, VOL III PLATE XII f. M. E. Eatou del. 1. Top of flowering plant of Ferocactus townsendianus. 2. Top of flowering plant of Ferocactus wislizeni. 3. Flower of Ferocactus diguetii. (All natural size.). 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington

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