 Varieties may have leaves with red, yellow, white and cream variations.Others may be spotted with purple, red, or cream, while others have different colors on the tops and botecies "Tillandsia cyanea" have a fragrance resembling that of clove spice.One study found 175,000 bromeliads per hectare (2.5 acres) in one forest; that many bromeliads can sequester 50,000 liters (more than 13,000 gallons) of water.