Pineapple (Ananas comosus) is the common name for an edible tropical plant and also its fruit. It ia also found in some part of Kerala. In Malayalam this plant is called ‘Kaitha’.
Ecology: (Ananas comosus), fruit-bearing plant of the family Bromeliaceae, native to tropical and subtropical America but introduced elsewhere. The pineapple plant resembles the agave or some yuccas in general appearance. It has from 30 to 40 stiff, succulent leaves closely spaced in a rosette on a thick, fleshy stem. With commercial varieties, a determinate inflorescence forms about 15 to 20 months after planting on a flower stalk 100–150 mm (4–6 inches) in length. The originally separate light purple flowers, together with their bracts, each attached to a central axis core, become fleshy and fuse to form the pineapple fruit, which ripens five to six months after flowering begins. Fruits of commercial varieties range from 1 to 2 kg (2 to 4 pounds) in weight.