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Orchids (Orchidaceae family)(Chinese:兰花) are the largest and most diverse of the flowering plant (Angiospermae) families,with over 800 described genera and 25,000 species.Some sources give 30,000 species,but the exact number is unknown since classification differs greatly in the academic world.There are another 100,000+ hybrids and cultivars produced by horticulturists,created since the introduction of tropical species in the 19th century.The Kew World Checklist of Orchids includes about 24,000 accepted species.About 800 new species are added each year.Orchids,through their interactions with pollinators and their symbiosis with orchid mycorrhizal fungi,are considered by some,along with the grasses,to be examples of the most advanced (derived) floral evolution known. All orchid species are protected for the purposes of international commerce under CITES as potentially threatened or endangered in their natural habitat,with most species listed under Appendix II.A number of species and genera are afforded protection under Appendix I,including all Cypripedium,Mexipedium,Paphiopedilum,Phragmipedium,and Selenipedium species.Many other species are protected by both international and national legislation,and while hybrids are supposed to be specifically exempted,hybrid orchids are not allowed into the United States without a CITES permit.The reason that is given is that the authorities cannot distinguish the difference between hybrids and species.[citation ne
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Distribution Orchidaceae are cosmopolitan, occurring in almost every habitat apart from deserts and glaciers. The great majority are to be found in the tropics, mostly Asia, South America and Central America. They are found above the Arctic Circle, in southern Patagonia and even on Macquarie Island, close to Antarctica. The following list gives a rough overview of their distribution: tropical America: 250 to 270 genera tropical Asia: 260 to 300 genera tropical Africa: 230 to 270 genera Oceania: 50 to 70 genera Europe and temperate Asia: 40 to 60 genera North America: 20 to 25 genera [edit] Taxonomy Main article: Taxonomy of the Orchid family This family is totally recognised, and the APG II system of 2003 places it in the order Asparagales. The taxonomy of this family is in constant flux, as new studies continue to identify more classificatory elements. Five subfamilies are now recognised. The cladogram has been made according to the APG system: Apostasioideae: 2 genera and 16 species, south-western Asia Cypripedioideae: 5 genera and 130 species, from the temperate regions of the world, as well as tropical America and tropical Asia Monandrae Vanilloideae: 15 genera and 180 species, humid tropical and subtropical regions, eastern North America Epidendroideae: more than 500 genera and more or less 20,000 species, cosmopolitan Orchidoideae: 208 genera and 3,630 species, cosmopolitan [edit] Ecology A majority of orchids are perennial epiphytes, which grow anchored to trees or shrubs in the tropics and subtropics. Other species are lithophytes, growing on rocks or very rocky soil, or are terrestrial. Nearly all temperate orchids are terrestrial. Some orchids, like Neottia and Corallorhiza, lack chlorophyll and are unable to photosynthesize. Instead, these species obtain energy and nutrients by parasitising soil fungi through the formation of orchid mycorrhizas. The fungi involved include those that form ectomycorrhizas with trees and other woody plants, parasites such as Armillaria, and saprotrophs.[5] These orchids are known as myco-heterotrophs, but were formerly (incorrectly) described as saprophytes due to the belief that they gained their nutrition by breaking down organic matter. While only a few species are achlorophyllous holoparasites, all orchids are myco-heterotrophic during germination and seedling growth and even photosynthetic adult plants may continue to obtain carbon from their mycorrhizal fungi. [edit] Description Orchids are easily distinguished, as they share some very evident apomorphies. Among these: bilaterally symmetric (zygomorphic), many resupinate, one petal (labellum) is always highly modified, stamens and carpels are fused, and the seeds are extremely small.去维基百科（世界网）中找吧里面更全，受字数限制就不发上来了
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问题一：兰花的英文？ orchid 问题二：关于msn blog 这个星号只是代表该人的信息发生了更新，不单单是blog的更新，还包括个人信息什么的。 问题三：花朵的英文怎么写 Flowers azalea 杜鹃花 begonia 秋海棠 Brazil 巴西木 cactus 仙人掌 camellia 山茶花 carnation 麝香石竹(康乃馨) Chinese enkianthus 灯笼花 Chinese flowering crab-apple 海棠花 chrysanthemum 菊花 dahlia 大丽花 daisy 雏菊 datura 曼陀罗 epiphyllum 昙花 fringed iris 蝴蝶花 fuchsia 倒挂金钟 gardenia 栀子 India canna 美人蕉 ja *** ine 茉莉 lilac 丁香 lily 百合 mangnolia 木兰花 mangnolia 玉兰花 morning glory 牵牛(喇叭花) narcissus 水仙花 oleander 夹竹桃定orchid 兰花 pansy 三色堇 peony 牡丹 peony 芍药 phalaenopsis 蝶兰 rose 玫瑰 rose 月季 setose asparagus 文竹 touch-me-not (balsam) 凤仙花 tulip 郁金香 violet, stock violet 紫罗兰 water hyacinth 凤眼兰 问题四：所有的花的英语单词 orked hardnd would sta 问题五：关于花的英语单词 关于花的英语单词 azalea 杜鹃花 begonia 秋海棠 Brazil 巴西木 cactus 仙人掌 camellia 山茶花 carnation 麝香石竹(康乃馨) Chinese enkianthus 灯笼花 Chinese flowering crab-apple 海棠花 chrysanthemum 菊花 dahlia 大丽花 daisy 雏菊 datura 曼陀罗 epiphyllum 昙花 fringed iris 蝴蝶花 fuchsia 倒挂金钟 gardenia 栀子 India canna 美人蕉 ja *** ine 茉莉 lilac 丁香 lily 百合 mangnolia 木兰花 mangnolia 玉兰花 morning glory 牵牛(喇叭花) narcissus 水仙花 oleander 夹竹桃 orchid 兰花 pansy 三色堇 peony 牡丹 peony 芍药 phalaenopsis 蝶兰 rose 玫瑰 rose 月季 setose asparagus 文竹 touch-me-not (balsam) 凤仙花 tulip 郁金香 violet, stock violet 紫罗兰 water hyacinth 凤眼兰 问题六：花的英文单词 flower flower flower 问题七：浇花的英语单词 浇花 water flowers water the flowers; watering the flowers; water the flower 例句 1 他提了一桶水去浇花。 He took a bucket of water to water the flowers. 2 你已经浇花了吗？不，我没有。 Have you watered the plants No, I haven't. 3 别忘了带雨伞，我也许会在今天浇浇花。 Don't forget your umbrella, I might water the plants today. 4 你必须浇花。 You must water flowers. 5 我的工作是每天浇花。 My work is waters flowers every day. 6 我们可以用洗过脸的水用来浇花或者冲厕所。 We can water flowers or clear the toilet with the wash-face water. 7 我是不是要用水浇花？ Shall I water the flowers? 8 你怎麽可以忘了浇花呢？ How could you forget to water the flowers? 9 让你浇花你却把花盆打了，啥都干不好，成事不足败事有余！ Let you water the flowers, but you broke the flowerpot, can't you do anything right? Provided by gt 10 昨天下午浇花了。 The flowers were watered yesterday afternoon. 11 你用你的眼泪浇花的时候，泉水就用不上啦。 You don't WANT spring water; you want to water it with your tears. 12 我看到你的广告了，我想问问你是否提供浇花的服务。 I came across your ad and was wondering if watering the flowers is something you do. 13 我们可以在花园里浇花。 We can water the flowers in the garden. 14 若是给他一个浇花壶，再加一把剪子，他就会忘情地泡在自家的花房里，悠游于那数百株品种各异姹紫嫣红的兰花中。 With watering can and clippers, he would potter in his greenhouse among hundreds of varieties of orchids. 15 奶奶和赛丽在浇花。 Grandma and Sally are watering the flowers. 16 我外出度假的时候，我邻居帮我浇花。 My neighbour helped to water my plants while I was away on holiday. 17 谁在和李雷一起浇花？约翰。 Who is Li Lei watering the flowers with? Jonh. 18 你本不必浇花的，因为天要下雨了。 You shouldn't have watered the flow......>>
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