檢視桤木属的原始碼

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| style="background: #008080" align= center|  '''<big>桤木属</big> '''

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[[File:U=1108483882,4146582021&fm=15&gp=0.jpg|缩略图|居中|[https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=1108483882,4146582021&fm=15&gp=0.jpg 原图链接][https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E6%A1%A4%E6%9C%A8%E5%B1%9E&step_word=&hs=0&pn=7&spn=0&di=16510&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=1108483882%2C4146582021&os=1266577899%2C2400204643&simid=3510899432%2C137332691&adpicid=0&lpn=0&ln=409&fr=&fmq=1615948040490_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined&copyright=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=15&oriquery=&objurl=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%3A%2F%2Fa1.att.hudong.com%2F26%2F58%2F01300001186065130309580930157_140.jpg%26refer%3Dhttp%3A%2F%2Fa1.att.hudong.com%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Djpeg%3Fsec%3D1618540887%26t%3D1ba283d565ddb86c37b5e6df45988b29&fromurl=ippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3Bkwthj_z%26e3Bv54AzdH3Foth15vAzdH3FfrAzdH3Fq6AzdH3Fitfp56yAzdH3Fej6ft5g_z%26e3B15%3Fej6%3D8n%26itft1jg%3D1vXvDAFpRAn%2C%2CVXAXxl1AEFXA&gsm=8&rpstart=0&rpnum=0&islist=&querylist=&force=undefined来自 百度 的图片]]]

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桤木属（学名：Alnus Mill.）落叶乔木或灌木；单叶，互生。

花单性，雌雄同株；[[小苞片]]多为4枚，较少为3或5枚。[[果序]]球果状；果苞木质，鳞片状，宿存，每个果苞内具2枚小坚果。

小坚果小，扁平，具或宽或窄的膜质或厚纸质之翅；[[种子]]单生，具膜质种皮。40余种，分布于亚洲、非洲、欧洲及北美洲，最南分布于南美J洲的秘鲁。