TY - ART TI - United States Exploring Expedition. During the year 1838, 1839, 1840, 1841, 1842 / Botany. Cryptogamia. Filices, including Lycopodiaceae and Hydropterides — Illustration, Filices. PL. 35 PY - 1854 UR - https://www.biodiversitylibrary.org/page/43553642 ID - page-43553642 ER -