Linked from
The 9 pages that link to Sorus, each with the reason it gives.
SporangiumNarrower topic: A fern sorus groups many sporangia into a visible reproductive patch.
FernBroader topic: Its placement and appearance often reveal where a fern makes spores.
FrondBroader topic: Sori are visible reproductive structures on many fertile fronds.
AspleniaceaeRelated: The position and shape of sori help distinguish many Asplenium species.
PteridophyteBroader topic: Many ferns group their sporangia into visible sori.
BrackenBroader topic: Bracken produces spores in sori along the margins of its fronds.
DryopteridaceaeRelated: Dryopteridaceae commonly bears sori on the lower surfaces of its fronds.