Indusium The flap of tissue, derived from the placenta, that encloses the developing sporangia in the sorus of a fern.
囊群:是一种起源于胎座(应为叶表皮译者)片组,在蕨类植物孢子囊群中正在发育孢子囊上。
Indusium The flap of tissue, derived from the placenta, that encloses the developing sporangia in the sorus of a fern.
囊群:是一种起源于胎座(应为叶表皮译者)片组,在蕨类植物孢子囊群中正在发育孢子囊上。
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