1.Inflorescence paniculate. Flowers bisexual. Pedicel slender, articulate below middle, articulation distinct.
花序圆锥状花两性花梗纤细，中部以下具节，节明显。
2.Inflorescence racemose or paniculate, terminal ones slender, glabrous, subtended by persistent, gradually enlarged bracts.
总状的花序或圆锥状，纤细的顶生的，，被包着在以前宿存，逐渐放大苞片。
3.Stem stout, pubescent, paniculate-branched, lower branches alternate, upper branches verticillate, often purplish red.
茎粗壮，短柔毛，分开，下部分枝互生，上部分枝轮生，通常紫红色。
4.Inflorescences terminal or axillary, racemose or paniculate, sometimes clustered in leaf axils, often bracteate or bracteolate.
圆锥花序顶生或腋生，总状或圆锥状，有时在叶腋簇生，具苞片的通常或。
5.Stem solitary, erect, paniculate-branched, lower branches alternate, upper branches verticillate.
茎单生，竖立，分枝，下部分枝互生，上部分枝轮生。
6.Inflorescences terminal and axillary, spicate, often paniculate, axes lengthening in fruit, densely gray pubescent.
花序顶生和腋生，穗状，通常圆锥状，轴在果期变长，密被灰色的短柔毛。
7.Inflorescences terminal, paniculate or racemose-paniculate.
花序顶生，圆锥状或者总状花序。
8.Inflorescences various, from single flowers to umbellate, corymbose, racemose or cymose-paniculate.
花序各种各样，从单花到伞形花序，伞房花序，总状花序或者聚伞状圆锥花序。
9.Inflorescences paniculate, rarely capitate.
花序圆锥状，很少头状。
10.Inflorescences containing male and female flowers, paniculate, with few short branches, longer than petioles.
花序包含雄和雌的花，圆锥状，具很少短枝，长于叶柄。