二年(nian)生(sheng)草本,被粉霜。矮且粗壯(zhuang)一年(nian)生(sheng)莖(jing)肉質,不(bu)分(fen)枝,綠色(se)或(huo)(huo)灰綠色(se)。基生(sheng)葉多數(shu),質厚,層(ceng)(ceng)層(ceng)(ceng)包(bao)裹成球狀體,扁球形,直徑(jing)10-30厘(li)米或(huo)(huo)更大,乳白色(se)或(huo)(huo)淡綠色(se);二年(nian)生(sheng)莖(jing)有(you)分(fen)枝,具莖(jing)生(sheng)葉。
基(ji)生葉及下部(bu)莖生葉長(chang)(chang)圓狀(zhuang)倒卵形(xing)(xing)(xing)(xing)至圓形(xing)(xing)(xing)(xing),長(chang)(chang)和寬達(da)30厘(li)米。頂端圓形(xing)(xing)(xing)(xing),基(ji)部(bu)驟(zou)窄(zhai)成極短有寬翅的葉柄,邊緣有波狀(zhuang)不顯明(ming)鋸(ju)齒(chi);上(shang)部(bu)莖生葉卵形(xing)(xing)(xing)(xing)或長(chang)(chang)圓狀(zhuang)卵形(xing)(xing)(xing)(xing),長(chang)(chang)8-13.5厘(li)米,寬3.5-7厘(li)米,基(ji)部(bu)抱(bao)莖;最(zui)上(shang)部(bu)葉長(chang)(chang)圓形(xing)(xing)(xing)(xing),長(chang)(chang)約(yue)4.5厘(li)米,寬約(yue)1厘(li)米,抱(bao)莖。
總狀花(hua)序頂(ding)(ding)生及腋生;花(hua)淡黃(huang)色,直(zhi)徑2-2.5厘(li)(li)米(mi)(mi)(mi);花(hua)梗(geng)長(chang)(chang)7-15毫(hao)米(mi)(mi)(mi);萼片(pian)直(zhi)立(li),線狀長(chang)(chang)圓(yuan)(yuan)形(xing),長(chang)(chang)5-7毫(hao)米(mi)(mi)(mi);花(hua)瓣寬(kuan)橢(tuo)圓(yuan)(yuan)狀倒(dao)卵(luan)形(xing)或近圓(yuan)(yuan)形(xing),長(chang)(chang)13-15毫(hao)米(mi)(mi)(mi),脈紋(wen)顯明,頂(ding)(ding)端微缺,基部驟變窄(zhai)成爪,爪長(chang)(chang)5-7毫(hao)米(mi)(mi)(mi)。長(chang)(chang)角(jiao)果(guo)(guo)圓(yuan)(yuan)柱形(xing),長(chang)(chang)6-9厘(li)(li)米(mi)(mi)(mi),寬(kuan)4-5毫(hao)米(mi)(mi)(mi),兩側稍(shao)壓扁,中脈突出,喙圓(yuan)(yuan)錐形(xing),長(chang)(chang)6-10毫(hao)米(mi)(mi)(mi);果(guo)(guo)梗(geng)粗,直(zhi)立(li)開展,長(chang)(chang)2.5-3.5厘(li)(li)米(mi)(mi)(mi)。種(zhong)子球形(xing),直(zhi)徑1.5-2毫(hao)米(mi)(mi)(mi),棕色。花(hua)期4月,果(guo)(guo)期5月。
甘藍(lan)營(ying)養(yang)元素很(hen)豐(feng)富如優質蛋白,纖維素,礦物質,維生素等(deng)等(deng),吃紫甘藍(lan)可以補(bu)充營(ying)養(yang),強身健體。