Tillandsia
straminea
is a contender for title of overall most spectacular Tillandsia.
The clone that we grow can become enormous--almost up to 90 CM across
after two or three generations! (This is one of the species for which
a single plant can get larger from one generation to the next when grown
in good, bright conditions. Of course, over the years, a giant clump
will develop as you can see in the photo. On top of all this, the flowers
are wonderfully scented and the plant produces many of them over many
weeks.