Whole terminal inflorescences dense clusters of sessile flowers; axillary inflorescences, if any, usually sessile clusters on main stems, rarely pedunculate clusters of sessile flowers.

• 整个顶生的花序无梗花的紧密的簇生；腋生的开花，如果有的话，通常无柄的群在主茎上，很少无柄的花的有花序梗的群。(12