- ↑ database, NODC Taxonomic Code, 1996
- ↑ World Checklist of Gesneriaceae,
- ↑ Lamiales of North America Update, 2011
- ↑ database, The PLANTS Database, 2000
- ↑ database, The PLANTS Database, 1996
- ↑ U. S. Fish and Wildlife Service, 1996Endangered and Threatened Wildlife and Plants; Determination of Endangered or Threatened Status for Nineteen Plant Species From the Island of Kauai, Hawaii Federal Register, vol. 61, no. 198
- ↑ 7.0 7.1 Roskov Y., Kunze T., Orrell T., Abucay L., Paglinawan L., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Decock W., De Wever A., Didžiulis V. (ed) (2014). "Species 2000 & ITIS Catalogue of Life: 2014 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 26 Mayo 2014.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)
- ↑ (Canada);http://siit.conabio.gob.mx (Mexico) ITIS Global: The Integrated Taxonomic Information System
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