usually elongate cluster of flowers along the main stem in which the flowers at the base open first
raceme详细解释
ra.ceme n.Botany （名词）【植物学】 An inflorescence having stalked flowers arranged singly along an elongated, unbranched axis, as in the lily of the valley.总状花序：一种花序，花心大约等长的花梗沿一条延长的，不分叉的轴线单向生长，如山谷百合 来源：Latin racômus [a bunch of grapes] 拉丁语 racômus [一串葡萄]
