BioStor
 | A monographic study of the West Indian species of Phyllanthus G L Webster (1957) Journal of the Arnold Arboretum 38: 295-373 |
 | Neotropical hylid frogs, genus Smilisca W E Duellman and L Trueb (1966) University of Kansas Publications. Museum of Natural History 17: 281-375 |
 | A checklist of the millipeds of Mexico and Central America H F Loomis (1968) United States National Museum Bulletin 266: 1-125 |
 | The genera of Pinaceae in the southeastern United States R A Price (1989) Journal of the Arnold Arboretum 70: 247-305 |