Clusia rosea, the autograph tree, copey, cupey, balsam apple, pitch-apple, and Scotch attorney, is a tropical and sub-tropicalplant species in the genus Clusia. The name Clusia major is sometimes misapplied to this species.
Description
Clusia rosea is a tree found in the Caribbean, including the Bahamas, Hispaniola, Cuba, Puerto Rico, and Florida. It is a hemiepiphyte, that is, it grows as an epiphyte on rocks or other trees at the start of its life and resembles a strangling fig. Just as a strangling fig it overgrows and strangles its host tree with its many aerial roots. The petals are pink to white. The upper leaf tissue registers 'writing' giving it the common name autograph tree. The tree produces a fleshy, light green but poisonous fruit; once the fruit has split, the seeds are favored by birds and other wildlife. Clusia species are normally dioecious, but in C. rosea, there are pistillate individuals only, and seeds are formed through agamospermy.
Cultivation
This plant is cultivated as an ornamental plant, for its flowers, foliage, and fruit. It is planted in gardens as a fruiting and ornamental tree in sub-tropical climates, and used as a houseplant in many climates.
Invasiveness
Clusia rosea has become a great threat to Sri Lanka, Hawaii, and many other tropical countries as an invasive plant. In Sri Lanka it is spreading rapidly on the mountains of the central hill country. It especially grows on rocks and rock outcrops where it forms dense thickets. Being a hemiepiphyte that resembles a strangling fig, it also sprouts on branches and trunks of native trees and rapidly overgrows and strangles them. It therefore poses a great threat to what little remains of the native submontane forests, and the uniquenative vegetation around rock outcrops, such as on the Hantana mountain range near Kandy. It is known as Gal Goraka or Gal Idda in Sinhalese. It is one of Hawaii's most invasive plants and grows in forests and open, disturbed areas in low elevations. It is spread by birds which eat its fruits.
Uses
The leaves were used to make playing cards in the West Indies. Some sign their autographs on the leaves and watch them grow. In Puerto Rico, in the past, parts of the plant were used to make game balls, to make tar and for firewood.
