分布于(yu)中國廣西上金(jin)縣,生于(yu)山谷石灰巖石邊(bian)。
攀援草本。莖(jing)圓(yuan)柱形(xing),橄欖色,上部(bu)有(you)傘房狀(zhuang)(zhuang)(zhuang)分(fen)枝,枝開展,具(ju)細條(tiao)紋,被(bei)灰色短(duan)(duan)柔毛(mao),雜有(you)腺(xian)體,下(xia)(xia)部(bu)的(de)枝長達16厘(li)米(mi),節間4-5厘(li)米(mi);葉硬紙質,中部(bu)葉披針狀(zhuang)(zhuang)(zhuang)橢(tuo)圓(yuan)形(xing),長8-9厘(li)米(mi),寬2-2.5厘(li)米(mi),頂端尖(jian),基(ji)部(bu)楔(xie)(xie)狀(zhuang)(zhuang)(zhuang)尖(jian),緣(yuan)或中部(bu)以上有(you)不明顯的(de)具(ju)短(duan)(duan)小(xiao)尖(jian)的(de)疏(shu)細齒,羽(yu)狀(zhuang)(zhuang)(zhuang)脈(mo),側脈(mo)明顯,向邊緣(yuan)綱結,上面(mian)(mian)下(xia)(xia)凹,下(xia)(xia)面(mian)(mian)凸起(qi),上面(mian)(mian)綠色,下(xia)(xia)面(mian)(mian)稍(shao)淡,兩面(mian)(mian)被(bei)糙(cao)短(duan)(duan)毛(mao),下(xia)(xia)面(mian)(mian)雜有(you)腺(xian)點;葉柄長3-5毫米(mi),密(mi)被(bei)短(duan)(duan)柔毛(mao);上部(bu)葉長圓(yuan)形(xing),橢(tuo)圓(yuan)狀(zhuang)(zhuang)(zhuang)長圓(yuan)形(xing)或狹(xia)卵形(xing),長達2厘(li)米(mi),寬0.9厘(li)米(mi),頂端尖(jian)或稍(shao)鈍,基(ji)部(bu)楔(xie)(xie)形(xing),全緣(yuan),最上部(bu)葉小(xiao),近無柄。
頭狀(zhuang)(zhuang)(zhuang)花(hua)(hua)序盤狀(zhuang)(zhuang)(zhuang),具(ju)(ju)短或無花(hua)(hua)序梗(geng),單生(sheng)或2-3個(ge)簇(cu)生(sheng),花(hua)(hua)序梗(geng)長(chang)(chang)(chang)(chang)(chang)達6毫(hao)米(mi)(mi)(mi),具(ju)(ju)卵狀(zhuang)(zhuang)(zhuang)披針(zhen)形(xing)(xing)(xing)(xing)的(de)(de)苞(bao)(bao)片;總(zong)苞(bao)(bao)鐘(zhong)狀(zhuang)(zhuang)(zhuang)圓(yuan)(yuan)柱(zhu)形(xing)(xing)(xing)(xing),長(chang)(chang)(chang)(chang)(chang)5-5.5毫(hao)米(mi)(mi)(mi),寬3-4毫(hao)米(mi)(mi)(mi);總(zong)苞(bao)(bao)片5-6層(ceng),外層(ceng)卵形(xing)(xing)(xing)(xing),長(chang)(chang)(chang)(chang)(chang)1.5-2毫(hao)米(mi)(mi)(mi),頂(ding)端稍尖,中層(ceng)卵狀(zhuang)(zhuang)(zhuang)長(chang)(chang)(chang)(chang)(chang)圓(yuan)(yuan)形(xing)(xing)(xing)(xing),長(chang)(chang)(chang)(chang)(chang)2.5-3毫(hao)米(mi)(mi)(mi),內層(ceng)長(chang)(chang)(chang)(chang)(chang)圓(yuan)(yuan)形(xing)(xing)(xing)(xing),長(chang)(chang)(chang)(chang)(chang)約(yue)(yue)(yue)4毫(hao)米(mi)(mi)(mi),頂(ding)端鈍,背(bei)面及邊(bian)緣被(bei)疏柔(rou)毛,常雜(za)有(you)腺;花(hua)(hua)托(tuo)平(ping),徑約(yue)(yue)(yue)1毫(hao)米(mi)(mi)(mi),具(ju)(ju)小窩(wo)孔;外圍的(de)(de)雌花(hua)(hua)1層(ceng),約(yue)(yue)(yue)7個(ge),舌(she)(she)狀(zhuang)(zhuang)(zhuang),管部(bu)圓(yuan)(yuan)柱(zhu)形(xing)(xing)(xing)(xing),長(chang)(chang)(chang)(chang)(chang)約(yue)(yue)(yue)2.5毫(hao)米(mi)(mi)(mi),舌(she)(she)片極小,頂(ding)端具(ju)(ju)不明顯的(de)(de)3雌齒;花(hua)(hua)柱(zhu)分枝線形(xing)(xing)(xing)(xing),頂(ding)端鈍;央(yang)的(de)(de)兩性花(hua)(hua)少數(shu)(約(yue)(yue)(yue)3個(ge)),花(hua)(hua)冠黃色(se),管狀(zhuang)(zhuang)(zhuang),長(chang)(chang)(chang)(chang)(chang)4.5-5毫(hao)米(mi)(mi)(mi),管部(bu)圓(yuan)(yuan)柱(zhu)形(xing)(xing)(xing)(xing),檐部(bu)狹鐘(zhong)狀(zhuang)(zhuang)(zhuang),具(ju)(ju)5個(ge)不等(deng)長(chang)(chang)(chang)(chang)(chang)的(de)(de)裂片,裂片線狀(zhuang)(zhuang)(zhuang)披針(zhen)形(xing)(xing)(xing)(xing),內彎,外面2裂片長(chang)(chang)(chang)(chang)(chang)1.6毫(hao)米(mi)(mi)(mi),內面的(de)(de)裂片長(chang)(chang)(chang)(chang)(chang)約(yue)(yue)(yue)1毫(hao)米(mi)(mi)(mi);瘦(shou)果長(chang)(chang)(chang)(chang)(chang)圓(yuan)(yuan)狀(zhuang)(zhuang)(zhuang)倒卵形(xing)(xing)(xing)(xing),長(chang)(chang)(chang)(chang)(chang)1.5毫(hao)米(mi)(mi)(mi),兩面具(ju)(ju)2肋,被(bei)疏微毛;冠毛淡黃白(bai)色(se),糙毛狀(zhuang)(zhuang)(zhuang),長(chang)(chang)(chang)(chang)(chang)4.3毫(hao)米(mi)(mi)(mi)。花(hua)(hua)期10月。
該種外(wai)形,特(te)別是分枝體態(tai)及總片質地酷似(si)斑鳩菊(ju)屬的某些種類,但(dan)花的結(jie)構(gou)完全(quan)不(bu)同。
異裂(lie)菊尚(shang)未栽培(pei)研究。可用種子繁殖。
異裂菊是(shi)中國特有(you)的(de)寡種屬,分布區極狹窄(zhai),數(shu)量稀少,必須(xu)加強保護,以(yi)免滅絕。保護該種,對研(yan)究菊科某(mou)些類群的(de)分類有(you)一定的(de)科研(yan)價值。