The forests are rich in epiphytes, lianas, and creepers and clump-forming bamboo. The forests are multi-storeyed and rich in epiphytic flora and woody lianas. They are tropical evergreen trees, shrubs and lianas. "Aristolochia" is a genus of evergreen and deciduous lianas (woody vines) and herbaceous perennials. The understory was thick with lianas and ferns covering the forest floor. They are mostly perennial, herbaceous plants, shrubs, or lianas. Woody plants are usually either trees, shrubs, or lianas. Species of "Fallopia" grow as vines, lianas, shrubs or subshrubs. They are tuberous herbaceous perennial lianas, growing to or more tall. It comprises about 130 species of deciduous and evergreen shrubs, small trees and lianas. The order includes trees, bushes, lianas, and herbaceous plants. The genus is composed of mostly vigorous, woody, climbing vines / lianas. Most species are herbs or shrubs, but some are trees and lianas. The family includes many lianas, climbing by tendrils, by twining, or rarely, by aerial roots. It consists of some 30 species of trees, shrubs and tropical lianas.