Orchid: monocotyledons, at least more than 750 species, more than 20000 species, widely distributed in the world, but chiefly tropical area。
Chinese 166 genera, 1019 species, the South and the north are produced in Yunnan, Taiwan, and Hainan Island is the most prosperous, the most for viewing, a few such as Dendrobium, Gastrodia elata, Bletilla striata, medicine。
For the perennial herb, Lu Sheng, epiphytic or saprophytic herb; Han is climbing lianas; terrestrial and saprophytic often with rhizomes or tubers, often with pseudobulbs epiphytic (modified stem, dilated into various shapes, fleshy) and hypertrophy and root is aerial roots。
Orchid Any member of the orchid family (Orchidaceae), among the largest families of plants, estimated to contain up to 35,000 species。
Orchids are monocots; their flowers have inferior ovaries, three sepals, and three petals。 They are distinguished by the differentiation of one petal into a labellum, and the fusion of pistil and stamens into the column。
Pollen is usually contained in pollinia, that is, bundles that are removed intact by pollinators, usually insects or sometimes birds。
Self-pollination and asexual reproduction without fertilization also occur。 The combination of lip and column structure, flower color, fragrance, and other factors may limit the range of pollinators。
Differing pollination mechanisms often provide barriers to cross-pollination between related species。 Each flower can produce large quantities of seeds, with numbers in the millions in some tropical species。
Seeds are minute, with undifferentiated embryo and no endosperm。 Germination and establishment depends on symbiotic mycorrhizae that provide nutrients and water。
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兰花是中国十大名花之一，古时把好的文章称为兰章，把情深意厚的好友称为兰友，或兰谊，因此兰花成了人间美好事物的象征。。。。 希望能够帮到你
答：兰花兰花属兰科，是单子叶植物，为多年生草本。高20一40厘米，根长筒状。叶自茎部簇生，线状披针形，稍具革质，2至3片成一束。兰花是中国传统名花，是一种以香著称的...详情>>
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