Tillandsia x kolbii also known as T. scaposa or T. ionantha v. scaposa The cross between the genus and species (Tillandsia 'x' kolbii) means that this plant is of interspecific hybrid origin. (A hybrid between two species of Tillandsia)
Tillandsia x kolbii is a wonderful and easy to grow species very similar to the ionantha's, the difference between this species and the ionanthas is that the flower spike protrudes from the rosette. Tillandsia x kolbii does not like the full, full sun that ionantha's thrive so well in, and prefers a slightly more humid condition.
I have lovely flowering size plants on offer, mounted on drift wood.