TY - BOOK TI - Publication. Field Museum of Natural History Botanical series VL - v.4:no.2 (1919) UR - https://www.biodiversitylibrary.org/item/19736 PB - Field Museum of Natural History CY - Chicago PY - 1919 SN - 0096-2759 AU - Field Museum of Natural History. KW - America KW - Botany KW - Classification KW - Plants ER -