Nautilocalyx cordatus (Gleason) L.E. Skog in L.E. Skog & Steyerm., Novon 1: 217. 1991 sec. C. Feuillet & M.J. Jansen-Jacobs 2008
- ≡Episcia cordata Gleason in Bull. Torrey Bot. Club 58: 466. 1931
- Holotype: Tate 878
- Isotype: Tate 878
- Isotype: Tate 878 (US)
- =Centrosolenia hirsuta Benth. in London J. Bot. 5: 362. 1846
- ≡Episcia hirsuta (Benth.) Hanst. in Linnaea 34: 350. 1865
- Holotype: Guyana, Banks of R. Parama, Ro. Schomburgk s.n.