By Mathias, Mildred Esther, 1906- / Constance, Lincoln, 1909- . Genre s-pe--- / Botany / Peru / Umbelliferae . Names leaves / fruit / flowers / peru / apex and 4535 more

Genre Field Museum of Natural History / Periodicals / Natural history / Periodicals . Names american / anna / plants / america / mexico and 1469 more

By Dahlgren, B. E. (Bror Eric), 1877-1961 / (Adolf Carl), 1873-1939 . Genre n------ / s------ / America / Identification / Pictorial works . Names rio / venezuela / peru / american / mus and 11798 more

By Standley, Paul Carpenter, 1884-1963 . Genre s------ / nc----- / Rubiaceae / South America / Rubiaceae and 1 more . Names herb / mus / type / lata / peru and 4858 more

By Stolze, Robert G. . Genre cl----- / Cnemidania / Ferns / Latin America . Names cnemidaria / costa / rachis / type / basal and 2409 more

By Laufer, Berthold, 1874-1934 . Genre a-cc--- / Crickets / Orthoptera / China / Sound production by animals and 3 more . Names insects / china / op / cicada / flowers and 170 more

Genre Natural history / Periodicals . Names area / life / unidentified / american / areas and 2752 more

By Ponce de Leon, Patricio. . Genre Vascellum . Names incertae sedis / lycoperdon / gleba / type / herb and 243 more

Genre Field Museum of Natural History / Periodicals / Natural history / Periodicals . Names mexico / india / california / american / life and 1010 more

By Standley, Paul Carpenter, 1884-1963 . Genre n------ / s------ / Botany / America / Plants . Names mus / sp / folia / herb / type and 5567 more