Tillandsia exserta Fernald Tillandsia exserta Fernald in Bot. Gaz. 20: 537. 1895 sec. Espejo-Serna & López-Ferrari 2018=Tillandsia cinerea Mez, Monogr. phan. 9: 679. 1896 syn. sec. Espejo-Serna & López-Ferrari 2008