Sori borne near the costule, indusium spherical, membranous.
孢子囊群靠近中脉著生;囊群盖球形, 膜质.
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Sori borne along the longitudinal veins and the reflexed edges of the ultimate segments of pinnules.
孢子囊沿能育叶裂片的纵脉两侧著生,并为裂片反卷的边缘所覆盖.
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Part of abaxial face of pinna , showing small scale and sori ( fallen indusia ) .
羽片远轴面的一部分,表示囊群盖已脱落的 孢子囊 群及小鳞片.
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How do ferns reproduce? Locate and describe three kinds of sori from three kinds of ferns.
说明 羊齿植物 的繁殖方法,从三种羊齿植物中找出其胞子囊群并描述其特徵及功能.
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Sori hemispheroid , in 2 - 3 series on each side along the costales, without indusium.
孢子囊群圆形,沿中脉两侧各排成2-3行, 无囊群盖.
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