The Development of Magnolia and Liriodendron, Including a Discussion of the Primitiveness of the Magnoliaceae

Abstract

Are there differences between binucleate and bicellular pollen? It is a study about all development ovule to fruit in Magnolia virginiana. The megaspore mother cell by two successive divisions, produce 4 megaspores, of which the innermost is functional. The mature embryo sac is 8 nucleate type and fertilization probably occurs as usual. The endosperm is cellular and is abundant in the mature seed.. Therea is a discussion about origin of ovule and there is a similar theory that Friedmann