Lowlands
Tropical rainforests lie on the eastern half of Central America and typically have many tall, broad-leaved evergreen trees 130 feet (40 meters) or more in height, and 4-5 feet (1.2-1.5 meters) in diameter that form a dense canopy. Shade-seeking plants, such as palms, figs, ferns, vines, philodendrons, and orchids, form the forest undergrowth beneath the trees.
Epiphytes, such as orchids, ferns, bromeliads, and mosses, cling to the branches of the trees in a dense mat of vegetation these plants have no roots but grow by clinging to the trunks of trees and drawing moisture and nourishment from the air. Rain forest trees that are harvested for their commercial value include mahogany, kapok, cedarwood, tagua, ebony, and rosewood for making furniture, breadfruit, palm, and cashew, sapodilla, used to make latex, and the rubber tree. Many brilliantly colored flowers also grow in Central America. The most common of these are orchids (with close to a thousand species), heliconias, hibiscus, and bromeliads.
In the Caribbean lowlands, where the soil is porous and dry, extensive savanna grasslands with sparse forests of pines, palmettos, guanacastes, cedars, and oaks are found. Along the Caribbean coast (called the Mosquito Coast), mangroves and coconut palms flourish in swamps and lagoons.
Highlands
The central mountains and highlands of Central America are cooler than the coastal lowlands, and his vegetation there is mainly deciduous hardwood trees such as walnut, pine, and oak. The eastern slopes of the mountains have abundant rainfall. "Cloud forests" that are 5,000 feet (1,525 meters) above sea level are thick with evergreen oak, sweet gum, pine, and laurel, which grow to a height of about 65 feet (20 meters) and are festooned with ferns, bromeliads, mosses, and orchids.
On the western side of the mountains, facing away from the moist Caribbean winds and receiving rain only seasonally, vegetation is sparse and semiarid, and soils are poor and unproductive. Deciduous tropical forests dominate there, and vegetations characterized by evergreen herbs and shrubs, plumeria (frangipani), eupatorium pines, myrtles, and sphagnum mosses.
See also: European flora, North american flora
|
