luxuriance

from WordNet (r) 3.0 (2006)

luxuriance
    n 1: the property of being lush and abundant and a pleasure to
         the senses [syn: {luxuriance}, {lushness},
         {voluptuousness}]

from The Collaborative International Dictionary of English v.0.48

Luxuriance \Lux*u"ri*ance\, n. [Cf. F. luxuriance.]
   The state or quality of being luxuriant; rank, vigorous
   growth; excessive abundance produced by rank growth.
   "Tropical luxuriance." --B. Taylor.
   [1913 Webster]