First it should be noted that there is no such thing as Tillandsia tomasellii officially. This taxa has been combined with xerographica and is for all practical purposes, that plant. However, it bears little resemblance to a ‘typical’ xerographica.
This plant more closely resembles Tillandsiafasciculata in general aspect, same basic shape, narrow, silvery leaves, etc. The inflorescence however does resemble xerographica, a tall, well branched spike of yellow. A possible hybrid? Maybe, but for now, we are keeping this plant with its old name.
By the way, our plants originated in Guatemala, not Oaxaca, Mexico where tomasellii was first found.