Ferns grow in shady and moist places.

齿类生暗潮湿的地方。

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

心皮能产生孢子的维管（齿类）还有具胚珠的裸子的大孢子叶是同源的。