Bract scale The structure found in large numbers in the female cone of gymnosperms, each bearing an ovuliferous scale in its axil.

在裸子植物的雌球果中大量存在的结构，每个苞鳞都包含一个珠鳞。

The smaller the canopy density of a forestis, the less the male cones are, and the smaller the ratio of male cones to female cones is.

林分组成对球花量的影响不明显。立地条件对球花量的影响显著。