ADJ (of plants) having twice as many stamens as petals, esp with the stamens arranged in two whorls (植物)具外轮对萼雄蕊的
diplostemonous stamen[植] 外轮对萼雄蕊
ADJ(形容词) (of plants) having twice as many stamens as petals, esp with the stamens arranged in two whorls (植物)具外轮对萼雄蕊的