Sori borne near the costule, indusium spherical, membranous.
孢子囊群靠近中脈著生;囊群蓋球形, 膜質(zhì).
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Sori borne along the longitudinal veins and the reflexed edges of the ultimate segments of pinnules.
孢子囊沿能育葉裂片的縱脈兩側(cè)著生,并為裂片反卷的邊緣所覆蓋.
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Part of abaxial face of pinna , showing small scale and sori ( fallen indusia ) .
羽片遠(yuǎn)軸面的一部分,表示囊群蓋已脫落的 孢子囊 群及小鱗片.
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How do ferns reproduce? Locate and describe three kinds of sori from three kinds of ferns.
說(shuō)明 羊齒植物 的繁殖方法,從三種羊齒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.
孢子囊群圓形,沿中脈兩側(cè)各排成2-3行, 無(wú)囊群蓋.
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