The
most common of the tillandsias in cultivation, Tillandsia ionantha
is still one of the most attractive of the smaller species. If you buy
a trinket at a store, chances are that it is Tillandsia ionantha.
Normally green, it will turn bright red when it blooms in order to attract
hummingbirds to pollinate it. There are also many interesting clones,
cultivars, and hybrids of Tillandsia ionantha.