Many orchids, bromeliads, ferns and mosses often grow as epiphytes. Mosses, ferns such as filmy ferns, and liverworts grow luxuriantly. These woodlands are home to lichens, mosses and ferns. There are many species of ferns, flowers, fungi, and mosses. Extensive swamps developed with mosses, ferns, horsetails and calamites. Many trees, shrubs, vines, ferns and other herbaceous perennials form clonal colonies naturally. Embryophytes include the vascular plants, such as ferns, conifers and flowering plants. It has several species of orchids, bamboos, ferns and other plants. Ginkgo trees, conifers, bennettites, horsetails, ferns and cycads were plentiful during this period. KNOX-like genes are also present in some algae, mosses, ferns and gymnosperms. In plants such as bryophytes, ferns, and a few others, spores germinate into independent gametophytes. In many plants such as bryophytes, ferns, and gymnosperms, egg cells are formed in archegonia. It may have eaten ferns, cycadeoids, seed ferns, horsetails, and algae. Trunks of palm trees and tree ferns are often used for building. Organic matter gradually accumulates, favoring the growth of herbaceous plants like grass, ferns and herbs.