 However, the family is diverse enough to include the tank bromeliads, grey-leaved epiphyte "Tillandsia" species that gather water only from leaf structures called trichomes, and many desert-dwelling succulents.The largest bromeliad is "Puya raimondii", which reaches 3–4 m tall in vegetative growth with a flower spike 9–10 m tall, and the smallest is Spanish moss.Bromeliads are plants that are adapted to various climates.