Bristles of involucre obviously branched above base .
总苞明显上面分枝基部的刚毛。
Inflorescence without a campanulate involucre , bracts spirally arranged .
没有一钟状的总苞的花序,苞片螺旋状排列。
Inflorescence terminal or axillary , densely capitate ; peduncle long or short ; involucre present ; bracts caducous , small .
花序顶生或腋生,密头状;花序梗长或短;总苞宿存;苞片早落,小。
Flowers enclosed by a calyxlike involucre ; fruit globose , obovoid , oblong , fusiform , or terete , sometimes ribbed , without sticky glands .
花被萼片状的总苞包围;果球状,倒卵球形,长圆形,纺锤形,或者圆柱状,有时具肋,无粘性腺体。
Inflorescences mostly terminal , less often axillary , of cymes , umbels , or verticils , sometimes 1-flowered or fasciculate , often grouped into panicles ; bracts often inconspicuous , sometimes forming calyxlike involucre , or large and brightly colored .