1. The ovules are hemitropous, with 2 integuments, tenuinucellate and the archesporial cell functions directly as the mega-spore mother cell. 胚珠是半球形的，有2个被膜，腱鞘状，而原孢子细胞直接作为大孢子母细胞起作用。
2. There are 2 ovules at the base of the ovuliferous. 珠鳞基部近轴面着生2个胚珠；
3. Pollen is usually blown to other trees and fertilizes their ovules. 花粉通常会被风吹到其它树上使其受精。
4. Most angiosperm ovules possess two integuments, while gymnosperms usually have only one. 大多数被子植物的胚珠有两层珠被，而裸子植物通常只有一层。
5. The fiber induction and development from cotton ovules of fiber mutants in vitro were studied and analyzed. 离体诱导不同类型的纤维突变体胚珠纤维发育，研究纤维突变体离体纤维发育的情况。
