Dear Pbser There is a book on Gesneriaceae from Costa Rica, written by Ricardo Kriebel Haehner, published by Editorial INBio (National Biodiversity Institute) of Costa Rica, plant description in English and Spanish, the link to buy it is the next http://securesitecr.com/editorialinbiolibreria/…. php? id_product = 91 & id_lang = 3 Greetings Fabio F