Nelsonia canescens (Lam.) Spreng. in Syst. Veg. 1: 42. 1824 sec. D.C. Wasshausen & al. 2005
- ≡Justicia canescens Lam. in Bot. 1: 41. 1791
- =Justicia nummulariifolia Vahl in Enum. Pl. 1: 122. 1804
- ≡Nelsonia nummulariifolia (Vahl) Roem. & Schult. in Syst. Veg. 1: 173. 1817
- Holotype: West in Herb. Vahl
- =Nelsonia campestris R. Br. in Prodr. 481. 1810
- Unknown type category: R. Brown s.n.
- =Nelsonia albicans Kunth in Humb., Bonpl. & Kunth, Nov. Gen. Sp., ed. qu., 2: 234. 1818
- Holotype: Colombia, Río Sinú near El Zapata, Humboldt s.n.
