Trelease, William, 1857-1945. The Piperaceae of Panama. By William Trelease. - Washington, Govt. Print. Off., 1927. - v, 15-50, vii-viii p. 25 cm. - Smithsonian Institution. U.S. National Museum. Contributions from the U.S. Herbarium. v. 26, pt. 2 . LCCN: agr27000431 Subjects--Topical Terms: Piperaceae.Botany--Panama. LC Class. No.: QK1 / .U5 vol. 26, pt. 2