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SMITHSONIAN CONTRIBUTIONS TO KNOWLEDGE. 



PLANTJE WEIGHTIAN^ 





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TEXANO - NEO-MEXICAN JE 



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AN ACCOUNT OF A COLLECTION OF PLANTS 



MADE BY 



CHARLES WRIGHT, A. M., 



IN AN 



EXrEDITION FROM TEXAS TO NEW MEXICO, IN THE 



AND 



1849, 



CRITICAJL NOTICES AND CHAEACTERS OF OTHER NEW 



PT.ANTS FROM ADJACENT REGIONS, &c. 



BY 



ASA GRAY , ^. D., 



FISHER PROFESSOR OF NATURAL IIISTORY TN HARVARD UNlVERSnT. 



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PAKT I. 



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jft-TH-- 



WASHINGTON CITY: 



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PUBLISHED BY THE SMITHSONIAN INSTITUTION 



March, 1852. 



VOL. III. 



NEW YORK: G. P. PUTNAM. 



ART. 5 



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