Exhibit Item 12

Echinocactus wislizeni
Current classification: Ferocactus wislizeni

Illustrator: Paulus Roetter
Steel Engraving by W. H. Dougal, Georgetown, D.C.

The Report on the United States
and Mexican Boundary Survey
Major William H. Emory, 1859
Vol. II "Botany of the Boundary. Cactaceae", Plate 25

From the Collection of Richard and Patricia Wiedhopf

Exhibit Item 13

Holacantha emoryi
Current classification: Castela emoryi

Illustrator Uncredited
Lithograph

The Report on the United States
and Mexican Boundary Survey
Major William H. Emory, 1859
Vol. II "Botany of the Boundary. General Botany", Plate 8

From the Collection of Richard and Patricia Wiedhopf