Plantarum indigenarum et exoticarum icones ad vivum coloratae, oder, Sammlung nach der Natur gemalter Abbildungen inn- und ausländlischer Pflanzen, für Liebhaber und Beflissene der Botanik /.
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biodiversitylibrary.org/page/44260573
Plates prepared between the years 1849 and 1859, to accompany a report on the forest trees of North America
Washington,Smithsonian Institution,1891.
biodiversitylibrary.org/page/46924226
American journal of botany
Lancaster, Pa. :Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens,1914-
biodiversitylibrary.org/page/47199461