sorus
['sɒrəs]
n.
（尤指蕨类植物的叶子下方、菌类或苔藓类植物所长的）孢子堆，囊群;
例句:
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Each dot is called a sorus and consists of many sporangia mounted on stalks.
每个圆点称为一个囊群,由许多长在柄上的孢子囊组成.
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Each sorus is made up of clusters of structures called sporangia that contain spores for reproduction.
来自SA