One is rose, Rosaceae plants. Gymnosperms have no real flowers, reproductive organs formed in the flowering period is called cones, namely strobile. Gymnosperms The Sporophyl (sporophyll) are aggregated into strobiliform (strobiliform) into Thyrsiflorum (cone).

Thyrsiflorum Form

These consist of hypocotyls, ovules, bracts And, ovuliferous scale development consists of short branch.

Thyrsiflorum classification

The Ye Qiu (starninate strobilus) is also called ( Megasporangia A). The megaspore mother cell After meiosis to produce 4 Megaspore Only stay away from. Micropyle 1 end megaspore develops into the female gametophyte.