title: Two new species and a new combination inProtium(Burseraceae) from Costa Rica.
abstract: Two new species ofProtium(Burseraceae) are described and illustrated:Protium aguilariisp. nov., from the Pacific slope of the Osa Peninsula, Puntarenas Province, Costa Rica; andProtium hammeliisp. nov., from wet forests on the Caribbean slopes of Nicaragua and Costa Rica. In addition,Protium brenesiicomb. nov., is proposed as a new combination based onTrichilia brenesii, a name that was based on a specimen collected with flowers in the mountains near San Ramón, Alajuela Province, Costa Rica. It is compared withProtium costaricense, a similar species with which it has been confused for more than 90 years. Finally, illustrations and specimen citations are provided for all the aforementioned taxa, and some others with which they have been confused.
authors.affiliation: Current address: Missouri Botanical Garden, P.O. Box 299, St. Louis, Missouri 63166-0299, USA.
authors.forename: Daniel
authors.initials: D
authors.lastname: Santamaría-Aguilar
authors.affiliation: Missouri Botanical Garden, P.O. Box 299, St. Louis, Missouri 63166-0299, USA, and University of Missouri-St. Louis, Biology Department, One University Blvd., Research Building, St. Louis, MO 63121, USA.
authors.forename: Laura P
authors.initials: LP
authors.lastname: Lagomarsino
keywords: Burseraceae; Costa Rica; Nicaragua; Protium; Sapindales; taxonomy