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[[File:123223U=3362372468,1774983270&fm=15&gp=0.jpg|缩略图|居中|[https://baiketimgsa.sogoubaidu.com/PicBooklet.vtimg?relateImageGroupIdsimage&quality=80&size=b9999_10000&sec=1606906144523&di=6387886670c1b5d2ccccb3caa6941325&lemmaIdimgtype=91514110&nowsrc=httpshttp%3A%2F%2Fpic2Fg.baikehiphotos.sosobaidu.com%2Fp2Fbaike%2Fw%253d268%2Fsign%2F201202283De5d17938510fd9f9a017526f1d2cd42b%2F20120228153238-20348498712F5882b2b7d0a20cf43f84a89b76094b36acaf9959.jpg&type=1#simple_0 原图链接][https://baikeimage.sogoubaidu.com/v9151411search/detail?ct=503316480&z=0&ipn=d&word=%E8%A5%BF%E5%BA%B7%E9%87%8E%E9%9D%92%E8%8C%85&step_word=&hs=0&pn=0&spn=0&di=120&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=3362372468%2C1774983270&os=355958842%2C443223434&simid=4197114005%2C771974555&adpicid=0&lpn=0&ln=5&fr=&fmq=1606896061099_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=http%3A%2F%2Fa.hiphotos.baidu.com%2Fbaike%2Fpic%2Fitem%2F6159252dd42a28341449323259b5c9ea15cebf1f.htm jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fkwthj_z%26e3Bkwt17_z%26e3Bv54AzdH3Ftpj4AzdH3F%25Eb%25Ac%25BF%25Ec%25BA%25B0%25El%25b0%25bE%25El%25lD%25ld%25Eb%25bC%25bcAzdH3Fla8b9aa&gsm=1&rpstart=0&rpnum=0&islist=&querylist=&force=undefined 来自 搜狗 百度 的图片]]]

圆锥花序紧密，长14-22厘米，宽2-3厘米，分枝长1-5厘米，粗糙，直立或斜向上升，自基部即生小穗；小穗长5-6毫米，草黄色；两颖近等长或第二颖稍短，披针形，先端渐尖，背部粗糙，常具1脉，第二颖基部具3脉，中脉粗糙，有时具小刺毛；外稃长3.5-4.5毫米，微粗糙，顶端微齿裂，基盘两侧的柔毛长1-1.5毫米，芒自稃体背下部1/3处伸出，长5-7毫米，近中部膝曲，芒柱扭转；内稃膜质， [[ 平滑 ]] ，稍短于外稃，具2脉；延伸小穗轴长1.5-2毫米，与其所被柔毛共长3.5-4毫米；花药线形，长2.5-3毫米。花果期7-9月。