Manual de Plantas de Costa Rica 
mente con el Manual como coordinadores o 
asistentes, incluyendo a David Brunner, Karen 
Bynum, Maria Marta Chavarria, Dyala Flores, 
Luis Flores, Cristina Formoso, Elisa Horsch, 
Mary Merello, Diana Xochitl Munn-Estrada, 
Luther Raechal, Heidi Schmidt, Gilbert Solis y 
Gustavo Vargas. 
A Silvia Troyo, nuestra ilustradora, le de- 
bemos dar las gracias por mucho mas que sus 
excelentes dibujos. Silvia es autora de la mayo- 
ria de las ilustraciones hechas especificamente 
para el Manual y ha sido nuestra asistente y 
esencialmente nuestra editora en detalles de di- 
sefio. Las demas ilustraciones originales del 
Manual pertenecen a Alvaro Fernandez, para- 
taxOnomo; Chad Frick, colaborador voluntario; 
Francisco Hodgson, ilustrador independiente; 
Francisco (Pancho) Quesada, ilustrador y para- 
tax6nomo; y a la botanica Willow Zuchowski. 
Varios trabajos fueron de gran ayuda como 
fuentes interpretativas para la elaboracion de las 
ilustraciones, especificamente, The families of 
the monocotyledons (Dahlgren et al., 1985), 
Flora of Barro Colorado Island (Croat, 1978), 
Flora of Guatemala (Standley & Steyermark, 
1946-1977), Flora of Panama (Woodson & 
Schery, 1943-1981) y la serie Flora Neotropica 
Monographs; sin embargo, cualquier semejanza 
entre éstas y las ilustraciones del Manual seria 
mera coincidencia, debido a la naturaleza del 
material. 
También debemos darle las gracias al Marie 
Selby Botanical Gardens y a la Iowa State Uni- 
versity, por permitirnos utilizar ilustraciones 
suyas previamente publicadas de Orchidaceae y 
Poaceae, respectivamente. En todo caso, el 
Manual incluye los detalles respectivos de las 
fuentes y los autores de todas las ilustraciones. 
El Hunt Institute for Botanical Documentation, 
Carnegie Mellon University, Pittsburgh, PA, 
EUA, proporciono varias imagenes de botdani- 
cos para el capitulo sobre Historia, ademas dio 
su permiso para utilizar algunas ilustraciones de 
Poaceae previamente publicadas, pertenecien- 
tes a Agnes Chase. Fotos valiosas para el capi- 
tulo sobre Historia también se recibieron del 
Centro Cientifico Tropical, el Field Museum of 
Natural History y el Washington Biologists’ 
Agradecimientos/Acknowledgments XI 
ing David Brunner, Karen Bynum, Maria Marta 
Chavarria, Dyala Flores, Luis Flores, Cristina 
Formoso, Elisa Horsch, Mary Merello, Diana 
Xochitl Munn-Estrada, Luther Raechal, Heidi 
Schmidt, Gilbert Solis, and Gustavo Vargas. 
We are indebted to our illustrator, Silvia 
Troyo, for much more than her lovingly exe- 
cuted illustrations, whose current refinement is 
the result of continuing technical and intellec- 
tual effort. Silvia is the author of most of the il- 
lustrations done specifically for the Manual and 
has been our assistant, essentially our editor, in 
details of design. The remainder of the original 
illustrations are the work of former parataxono- 
mist and Manual illustrator Alvaro Fernandez, 
volunteer Chad Frick, free-lance illustrator Fran- 
cisco Hodgson, former parataxonomist and 
INBio illustrator Francisco (Pancho) Quesada, 
and colleague and botanist Willow Zuchowski. 
Published works were often of great help as in- 
terpretive sources in the construction of our 
original illustrations, specifically The families 
of the monocotyledons (Dahlgren et al., 1985), 
the Flora of Barro Colorado Island (Croat, 
1978), the Flora of Guatemala (Standley & 
Steyermark, 1946-1977), the Flora of Panama 
(Woodson & Schery, 1943-1981), and the Flora 
Neotropica Monographs series; however, any 
similarity between their and our final illustra- 
tions 1s coincidental, and a result of the nature 
of the material. 
For the Orchidaceae and Poaceae illustra- 
tions, we owe many thanks to The Marie Selby 
Botanical Gardens and Iowa State University, 
respectively, for granting permission to use pre- 
viously published illustrations in their posses- 
sion. Further details about sources and illustra- 
tors are provided, where pertinent, in the 
volumes containing the family treatments. The 
Hunt Institute for Botanical Documentation, 
Carnegie Mellon University, Pittsburgh, PA, 
U.S.A., provided a number of images of 
botanists for the History chapter, as well as per- 
mission to use certain previously published 
Poaceae illustrations by Agnes Chase. Valuable 
photos for the History chapter were also pro- 
vided by the Tropical Science Center, the Field 
Museum of Natural History, and The Washing- 
