- ↑ Germplasm Resources Information Network (GRIN), 2011
- ↑ The International Plant Names Index (IPNI), 2007 - 2012
- ↑ 3.0 3.1 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". Ginhipos tikang han orihinal han 2017-04-29. Ginkuhà 2014-06-05.