smaller of the two types of spore produced in heterosporous plants; develops in the pollen sac into a male gametophyte
microspore详细解释
mi.cro.spore n.Botany （名词）【植物学】 The smaller of two types of spores that give rise to a male gametophyte.小孢子：两种孢子中较小的一种，其产生一雄性配子体 【引伸】 mi.crospo.ric 或 mi.crospo.rous
