Bract scale The structure found in large numbers in the female cone of gymnosperms, each bearing an ovuliferous scale in its axil.
苞鳞:在裸子雌球
量存在
结构,每个苞鳞都包含一个珠鳞。
Bract scale The structure found in large numbers in the female cone of gymnosperms, each bearing an ovuliferous scale in its axil.
苞鳞:在裸子雌球
量存在
结构,每个苞鳞都包含一个珠鳞。
The carpel is homologous with the megasporophylls of certain spore-bearing vascular plants (pteridophytes) and the ovuliferous scales of gymnosperms.
心皮和产生孢子
维管
(羊齿类)还有具胚珠
裸子
孢子叶是同源
。
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