Nautilocalyx coccineus
Nautilocalyx coccineus in Brittonia 54: 352. 2003 sec. C. Feuillet & M.J. Jansen-Jacobs 2008
- Isotype: Guyana, Upper Potaro R. Region, upper slopes of Mt. Wokomung, Boom & Samuels 9186
- Holotype: Guyana, Upper Potaro R. Region, upper slopes of Mt. Wokomung, Boom & Samuels 9186