小羽片

xiǎo yǔ piàn
  • pinnule;pinulus
小羽片小羽片
小羽片[xiǎo yǔ piàn]
  1. 囊群椭圆形,由4~10个孢子囊组成,着生于小羽片背面,位于中脉的两侧;

    The sori are borne on the abaxial surface of the pinnule , arranged in two rows parallel to the midvein , elliptic , and composed of 4-10 round sporangia .