- ↑ Focke, 1874 In: Bremen, Abh. 4: 157
- ↑ 2.0 2.1 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)
- ↑ "World Plants: Synonymic Checklists of the Vascular Plants of the World". Ginhipos tikang han orihinal han 2019-03-18. Ginkuhà 2014-06-07.