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Forestiera isabelae (Olaceae): A new species for Costa Rica

Abstract:

Forestiera isabelae Hammel & Cornejo, known from one small population near Montezuma on the Nicoya Peninsula of Costa Rica, is described. As a lowland coastal species with petals and relatively large leaves and fruits (9-17 X 4-6 cm and 15- 20 mm, respectively), it is easily distinguished from the two other Costa Rican species, both apetalous and from higher elevation. It is compared with and distinguished in detail from two other more closely related, recently described coastal species, F. cor- ollata Cornejo & Wallander from farther north in Mesoamerica (Mexico, Guatemala, and Belize) and F. ecuadoriensis Cornejo & Bonifaz from Ecuador.