The ovule is bitegminous and tenuinucellate.The archesporial cell locates under the nucellus epidermis, which develops into fuctional megasporocyte.

原细胞位于珠心表之下，直接起大母细胞的功。

The carpel is homologous with the megasporophylls of certain spore-bearing vascular plants (pteridophytes) and the ovuliferous scales of gymnosperms.

心的维管植物（羊齿类）还有具胚珠的裸植物的大叶是同源的。

Macrospore metrocyte of Pinus sylvestris var. mongolica developed to female gametophyte containing female gamete-egg by a series of changes.

摘要樟松大母细胞经一系列变化，发育成雌配体。