Echinocactus platyacanthus in Mexiko - Ernst Stahl (Monatsschrift für Kakteenkunde, Jg. 12, Mai 1902)

A man in front of a giant barrel cactus (echinocactus platyacanthus, syn. Echinocactus ingens zucc. ) in mexico; photograph taken by the botanist ernst stahl, from the publication monatsschrift für kakteenkunde. Date: 1899 or 1900; 1902 (year of publication).