景观植物-桫椤-Alsophila spinulosaWallex HookR. M. T--紫天网|设计产业互联网站

描述

桫椤
桫椤（学名：Alsophila spinulosa (Wall. ex Hook.) R. M. Tryon），别名蛇木，是桫椤科、桫椤属蕨类植物，有“蕨类植物之王”赞誉。桫椤是能长成大树的蕨类植物，又称“树蕨”。桫椤的茎直立，中空，似笔筒，叶螺旋状排列于茎顶端。是目前已经发现的唯一的木本蕨类植物，极其珍贵，堪称国宝，被众多国家列为一级保护的濒危植物，有“活化石”之称。桫椤是古老蕨类植物，可制作成工艺品和中药，还是一种很好的庭园观赏树木。
桫椤是极少数一些木本种类其中的一种。生于林下或溪边荫地，产于中国大陆的西藏贵州赤水及南方各地，在尼泊尔、印度锡金、不丹、印度、缅甸、泰国、越南、菲律宾及日本南部也有分布。
据中新网2019年4月11日发布消息显示，云南省普洱市西盟县查获一起非法运输珍贵濒危植物制品案，缴获国家二级保护植物桫椤制品700多千克，抓获犯罪嫌疑人一名。

形态特征
桫椤茎干高达6米或更高，直径10-20厘米，上部有残存的叶柄，向下密被交织的不定根。叶螺旋状排列于茎顶端；茎段端和拳卷叶以及叶柄的基部密被鳞片和糠秕状鳞毛，鳞片暗棕色，有光泽，狭披针形，先端呈褐棕色刚毛状，两侧有窄而色淡的啮齿状薄边；叶柄长30-50厘米，通常棕色或上面较淡，连同叶轴和羽轴有刺状突起，背面两侧各有一条不连续的皮孔线，向上延至叶轴。 [2]
叶片大，长矩圆形，长1-2米，宽0.4-1.5米，三回羽状深裂；羽片17-20对，互生，基部一对缩短，长约30厘米，中部羽片长40-50厘米，宽14-18厘米，长矩圆形，二回羽状深裂；小羽片18-20对，基部小羽片稍缩短，中部的长9-12厘米，宽1.2-1.6厘米，披针形，先端渐尖而有长尾，基部宽楔形，无柄或有短柄，羽状深裂；裂片18-20对，斜展，基部裂片稍缩短，中部的长约7毫米，宽约4毫米，镰状披针形，短尖头，边缘有锯齿；叶脉在裂片上羽状分裂，基部下侧小脉出自中脉的基部；叶纸质，干后绿色；羽轴、小羽轴和中脉上面被糙硬毛，下面被灰白色小鳞片。 [2]
孢子囊群孢生于侧脉分叉处，靠近中脉，有隔丝，囊托突起，囊群盖球形，膜质；囊群盖球形，薄膜质，外侧开裂，易破，成熟时反折覆盖于主脉上面。
寓意
据说桫椤在1.8亿年前就出现了，和恐龙一样，同属“爬行动物”时代的两大标志，但经过漫长的地质变迁，桫椤逐渐灭亡，仅有少部分地区才有，而且桫椤的生长周期级长，生长速度慢，见证过沧海桑田的变化，因具有长寿的寓意。

如果需要植物采购可以联系，电话15889638076。也可以去客服官方淘宝店铺和微信公众号，随时欢迎家联系。真实植物购买、设计、养护联系客服。Dieffenbachia picta Lodd Also known as Dai fenye, it is an evergreen shrub like herb with thick and fleshy stems and a plant height of 1.5m. There are many horticultural varieties, and the patterns on the leaves of different varieties are different. Like warm, humid and semi cloudy environment. Not resistant to cold and drought. Conventional propagation is usually divided into plants and cuttings, but mainly cuttings. Native to South America. It is widely cultivated in tropical cities of Guangdong and Fujian in China. Young plants and small potted plants can be placed on the desk and windowsill for viewing. Medium sized potted plants can be placed in the corner of the living room and the edge of the sofa as decoration, making the room full of natural vitality. When it is used to place public places with low brightness, evergreen flowers and leaves still grow normally and green leaves.

The moral of evergreen flowers and leaves

"Evergreen flowers and leaves" is a warm and cheerful person. Because its leaves are bright and vigorous, it will give people a clear and lively feeling. It is suitable for giving it to their friends, colleagues or people who encounter setbacks. It represents the hope that the other party can face everything bravely. It can be placed indoors during maintenance.

2. Health and longevity: evergreen flowers and leaves is a kind of evergreen, which can be heard from its name. The leaves always remain emerald green and look vibrant, implying health and longevity. I hope people can always be healthy and free from disease. Evergreen flowers and leaves is very suitable for the elderly at home. I wish the elderly health and longevity, longevity, eternal health and youth.

3. Auspiciousness and wishfulness: Although evergreen is a foliage plant, it can also blossom. Its flowering is relatively rare, and the moral is also very good. It symbolizes that it can bring good luck. It can be placed at home and carefully maintained to promote flowering, which is a good omen.