. Contributions from the Botanical Laboratory of the University of Pennsylvania. Plants; Plants -- Pennsylvania. 132 CLARKâON WATER CONTENT 70 40 SO Ft. xercUa-T Rt o ClooJv Bt X â¢â¢ â¢â¢ KyJcleAY Rt O CJouiy. 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 University of Pennsylvania. Botanical Laboratory. Philadelphia : University of Pennsylvania Press

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