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Imagenes

Type specimen of Cyathea albidopaleata from the Smithsonian Institution, National Museum of Natural History, Department of Botany
Type specimen of Piper armatum from the Smithsonian Institution, National Museum of Natural History, Department of Botany
Mexia at table, 1937 | © California Academy of Sciences
Hikers looking at Mt. Lyell, Yosemite National Park (Calif.), circa 1919-1930 | © California Academy of Sciences