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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Epidendroideae ： ウィキペディア英語版 Epidendroideae In plant systematics Epidendroideae is a subfamily of the orchid family, Orchidaceae. Epidendroideae is larger than all the other orchid subfamilies together, comprising more than 15,000 species in 576 genera. Most Epidendroid orchids are tropical epiphytes, typically with pseudobulbs. There are, however some terrestrials such as ''Epipactis'' and even a few myco-heterotrophs, which are parasitic upon mycorrhizal fungi. They typically contain the remaining orchids with a single, fertile anther ( = monandrous), which is also fully incumbent ( = strongly convex) to suberect (= ascending towards the edges). The anther form arises from column elongation or, as in the vandoids, from early anther bending. The incumbent anther forms a right angle with the column axis or is pointed backward in many genera. Most have hard pollinia, i.e. a mass of waxy pollen or of coherent pollen grains. The pollinia are with caudicle and viscidium or without. The stigma are entire or three-lobed; a beak is present. The apical part of the middle stigma lobe forms a stipe ( = pollinium stalk). The ovary is unilocular. The leaves are distichous or spiraling, growing on thickened stems. The Epidendroideae are difficult to classify. They have been divided in “lower epidendroids” and “higher epidendroids”. ==Description== Epiphytes are plants which grow above the ground, on top of other plants. They are not planted in the soil and are not parasitic (i.e. they do not feed on other plants; however some types still damage their host in various ways). By growing on other plants, the epiphytes can reach to the light better or where they can avoid struggling for light. Many mosses and lichens are epiphytes, as are approximately 10 per cent of all seed plants and ferns. Epiphytes are common in some groups of plants, such as ferns, mosses, Strangler figs, lichens, and algae. Over half of the 20,000 species of orchids are epiphytes. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Epidendroideae」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.