@book{bhlitem252570, title = {George Engelmann : botanical notebook 7 : Echinocactus, Echinopsis, and Cereus }, volume = {Box 4: Folder 12: Cereus: 1867-1882}, copyright = {Public domain. The BHL considers that this work is no longer under copyright protection.}, url = {https://www.biodiversitylibrary.org/item/252570}, note = {https://www.biodiversitylibrary.org/bibliography/139010}, publisher = {}, author = {Engelmann, George,}, year = {1867}, pages = {40}, keywords = {1809-1884|Botanical illustration|Cactaceae|Cereus|Echinocactus|Echinopsis|Engelmann, George,|North America|Plant collecting|}, }