Johnstonella costata (Brandegee) Hasenstab & M.G. Simpson Johnstonella costata (Brandegee) Hasenstab & M.G. Simpson in Syst. Bot. 37: 754. 2012 sec. Simpson & al. 2019≡Cryptantha costata Brandegee in Bot. Gaz. 27: 453. 1899 syn. sec. Tropicos 2013