The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.

References

• 1996. database, The PLANTS Database
• 1996. database, NODC Taxonomic Code
• 2000. database, The PLANTS Database
• Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville.
• Breedlove, D. E. 1986. Flora de Chiapas. Listados Floríst. México 4: i–v, 1–246.
• CONABIO. 2009. Catálogo taxonómico de especies de México. 1. In Capital Nat. México. CONABIO, Mexico City.
• Correa A., M. D., C. Galdames & M. N. S. Stapf. 2004. Cat. Pl. Vasc. Panamá 1–599. Smithsonian Tropical Research Institute, Panama.
• D'Arcy, W. G. 1987. Flora of Panama. Checklist and Index. Part 1: The introduction and checklist. Monogr. Syst. Bot. Missouri Bot. Gard. 17: v–xxx, 1–328.
• Davidse, G., M. Sousa Sánchez, S. Knapp & F. Chiang Cabrera. (eds.) 2009. Cucurbitaceae a Polemoniaceae. Fl. Mesoamer. 4(1): 1–855.
• Dorr, L. J. 1995. II. Ericaceae subfamily Pyroloideae. Fl. Neotrop. 66: 28–53.
• Ericaceae of North America Update
• Fernald, M. 1950. Manual (ed. 8) i–lxiv, 1–1632. American Book Co., New York.
• García-Mendoza, A. J. & J. Meave del Castillo. 2011. Divers. Florist. Oaxaca 1–351. Universidad Nacional Autónoma de México, Ciudad Universitaria.
• Gleason, H. A. & A. J. Cronquist. 1991. Man. Vasc. Pl. N.E. U.S. (ed. 2) i–910. New York Botanical Garden, Bronx.
• Gleason, H. A. 1968. The Sympetalous Dicotyledoneae. vol. 3. 596 pp. In H. A. Gleason Ill. Fl. N. U.S. (ed. 3). New York Botanical Garden, New York.
• Hilty, J. Editor. 2013. Insect Visitors of Illinois Wildflowers.   World Wide Web electronic publication. illinoiswildflowers.info, version (05/2013)  
  See:   Abbreviations for Insect Activities,   Abbreviations for Scientific Observers,   References for behavioral observations
• Image metadata at Bioimages (http://bioimages.vanderbilt.edu/)
• Isotype: Rydberg, P. A. 1914. N. Amer. Fl. 29: 32.
• Kearney, T. H. & R. H. Peebles. 1960. Arizona Fl. (ed. 2) 1032 pp.
• Luteyn, J. L. & R. L. Wilbur. 2001. Pyrolaceae. En: Stevens, W.D., C. Ulloa, A. Pool & O.M. Montiel (eds.), Flora de Nicaragua. Monogr. Syst. Bot. Missouri Bot. Gard. 85(3): 2187.
• Luteyn, J. L. & R. L. Wilbur. 2005. Ericaceae. In Burger, W. (editor). Flora Costaricensis, 2005. Fieldiana, Bot., n.s. 45: 1–107.
• Luteyn, J. L. & R. L. Wilbur. 2010. Ericaceae. En: Manual de Plantas de Costa Rica. Vol. 5. B.E. Hammel, M.H. Grayum, C. Herrera & N. Zamora (eds.). Monogr. Syst. Bot. Missouri Bot. Gard. 119: 239–283.
• Molina Rosito, A. 1975. Enumeración de las plantas de Honduras. Ceiba 19(1): 1–118.
• Orrell T. (custodian) (2013). ITIS Regional: The Integrated Taxonomic Information System (version Apr 2011). In: Species 2000 & ITIS Catalogue of Life, 11th March 2013 (Roskov Y., Kunze T., Paglinawan L., Orrell T., Nicolson D., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Hernandez F., De Wever A., eds). Digital resource at www.catalogueoflife.org/col/. Species 2000: Reading, UK.
• Radford, A. E., H. E. Ahles & C. R. Bell. 1968. Man. Vasc. Fl. Carolinas i–lxi, 1–1183. University of North Carolina Press, Chapel Hill.
• SPECIMEN BASED RECORD. Published protolog data.
• Scoggan, H. J. 1979. Dicotyledoneae (Loasaceae to Compositae). Part 4. 1117–1711 pp. In Fl. Canada. National Museums of Canada, Ottawa.
• Small, J. K. 1933. Man. S.E. Fl. i–xxii, 1–1554. Published by the Author, New York.
• Standley, P. C. & L. O. Williams. 1966. Pyrolaceae. In Standley, P. C. & L. O. Williams (eds.), Flora of Guatemala - Part VIII, Number 2. Fieldiana, Bot. 24(8/2): 81–88.
• Stevens, W. D., C. Ulloa Ulloa, A. Pool & O. M. Montiel. 2001. Flora de Nicaragua. Monogr. Syst. Bot. Missouri Bot. Gard. 85: i–xlii,.
• Voss, E. G. 1996. Michigan Flora, Part III: Dicots (Pyrolaceae-Compositae). Cranbrook Inst. of Science, Ann Arbor.
• Wunderlin, R. P. 1998. Guide Vasc. Pl. Florida i–x, 1–806. University Press of Florida, Gainseville.