元;Simple ovary, the placentation is brink.The ovules are campylotropous.The ovule is bitegmic and crassinucellate.The megaspore archesporium is initiated from sub-epidermis of nucellus.
摘要矮沙冬青子房
心皮1室，边缘胎座，弯
，具双被、厚心。
词条纠错
X
megaspore
n. 大孢子,(种子植物的)
囊
囊声明：以上例句、词性
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相似单词
megasil, megasoma, megasome, Megaspaera, megasporangium, megaspore, megasporocyte, megasporogenesis, megasporophyll, megass,
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