A plant of some mystery. Central American forms of concolor are still offered as acostae, as are some forms of fasciculata. In fact, I am not certain that anyone really knows what exactly Tillandsia acostae is. This species is now considered to be rhomboidea, though we also have that species and this one is different in some ways.
Our plants came from Costa Rica many years ago. At the time we showed the plants to Prof. Dr. Werner Rauh who gave us the name. Over the years we have never seen another ‘real’ acostae, and I guess we never will as it is now not recognized. It is a compact, stiff leaved plant with a dark orange, inflorescence with four or more branches that are almost oval in cross section. Rather slow growing but worth the wait!