Taxonomy of cycas in china : current status and perspective 中国苏铁属植物的分类学研究现状与展望
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Karyotypes and karyotypical evolution in five cycas species of china 5种国产苏铁的核型和核型进化
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Status quo amp; amp; protection countermeasure on guangxi wild sago plam resources 广西野生苏铁资源现状与保护对策
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Cycads and ginkgo have motile sperm , unlike gnetophytes and conifers , which produce pollen 苏铁和银杏具活动精子可区别于买麻藤和松柏类，它们不产生花粉。
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They expected to find evidence of well - known late cretaceous vegetation such as conifers and cycads 他们原本期望发现晚白垩世时期著名植物如针叶树和苏铁存在的证据。
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An attractive fern , at first glance it looks like a plant of cycad and it is very suitable for cultivation as bonsai 本种主干直立，羽叶婆娑，极似苏铁类植物，具有重要的观赏价值，适合作盆景。
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There are four widely different living groups : the cycads , ginkgo , conifers , gnetophytes , and several fossil groups 分为四个不同的类群：苏铁类、银杏类、松柏类、买麻藤类植物以及一些化石类群。
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Coralloid roots a type of root regularly produced by cycads , which contains symbiotic nitrogen - fixing cyanobacteria in root nodules , giving the roots a knobbly coral - like appearance 珊瑚状的根：由苏铁类植物产生的一种类型的根，根瘤中含有共生的固氮蓝细菌，使根形成珊瑚状的有节的形状。
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25 species and 3 variations of 6 genus , about 16 percents of zamiaceae in the family , were introduced to xiamen botanical garden since 1975 to enrich the cycad diversity in china 摘要厦门植物园自1975年至今已引种保存泽米铁科6属25种和3个变种，约占世界泽米铁科植物种类的16 % ，丰富了我国的苏铁目植物资源。
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A valid export permit issued by a competent authority of the exporting country is required . the more commonly traded artificially propagated endangered plant species include cacti , aloes , pitcher plants , venus fly - trap , cycads , cyclamens and orchids 本港较常见买卖的人工培植濒危植物物种，有仙人掌、芦荟、猪笼草、捕蝇草、苏铁、兔仔花及兰花品种等。
