羊齿类

Ferns grow in shady and moist places.

羊齿类植生长在阴暗潮湿地方。

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

心皮和能产生孢子维管植（羊齿类）还有珠子植孢子叶是同源。