They are acaulescent or sometimes shortly caulescent plants, with a size of 6–8 cm high. The leaves are 4–9 cm long; with pods 0.6–1 cm wide, densely patent fabric; narrow triangular sheets, 0.3–0.4 cm wide, dense lepidotaindument, foliaceous bracts; compound inflorescence (of simple appearance due to the reduction of the spikes to 1 flower), with 1–3 flowers, primary foliaceous bracts, much longer than the spikes, floral bracts 3 cm long, longer than the sepals and covering them in the anthesis, ecarinated, inconspicuously nervate, glabrous, membranous, sessile flowers; sepals are 2 cm long, free, the posterior carinate, the anterior ecarinated; purple petals. Capsules are 2.5–4.5 cm long.[6]
Tillandsia: generic name that was named by Carl Linnaeus in 1738 in honor of the Finnish doctor and botanist Elias Tillandz (originally Tillander; 1640–1693).[8]
ionantha: epithet Latin meaning "with violet flowers"[9]
^Cáceres González, DA, K. Schulte, M. Schmidt & G. Zizka. 2013. Diversity and levels of endemism of the Bromeliaceae of Costa Rica - an updated checklist. PhytoKeys 29: 17-61.
^Davidse, G., M. Sousa Sánchez & AO Chater. 1994. Alismataceae to Cyperaceae. 6: i-xvi, 1-543. In G. Davidse, M. Sousa Sánchez & AO Chater (eds.) Fl. Mesoamer .. National Autonomous University of Mexico, Mexico City
^Morales Quirós, JF 2003. Bromeliaceae. In: Manual of Plants of Costa Rica, BE Hammel, MH Grayum, C. Herrera & N. Zamora (eds.). Monogr. Syst. Bot. Missouri Bot. Gard. 92: 297-375.
^CONABIO 2009. Taxonomic catalog of species of Mexico. 1. In Capital Nat. Mexico. CONABIO, Mexico City.