sorus
noun
so·rus
| \ ˈsȯr-əs
\
\
plural sori\ ˈsȯr-ˌī
, -ˌē \
, -ˌē \
Definition of sorus
: a cluster of plant reproductive bodies: such as
a
: a cluster of sporangia on the underside of a fertile fern frond
b
: a mass of spores bursting through the epidermis of the host plant of a parasitic fungus
c
: a cluster of gemmae on the thallus of a lichen
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