Enter a clue or pattern or both:
The Clue
Spore clusters (4 letter answer)
The Answer
SORI
Tags
Notes
The answer SORI is seen occasionally, appearing about once every 800 puzzles.
Related Clues
Spores
Clusters of spores
Fern clusters
Fern spores
Clusters of cells on ferns
Fern fruit dots
Fern spore clusters
Ferns' spore cases
Spore-case clusters
Spore clusters on ferns
Definition
SORUS as a noun:
1. a spore-producing structure in certain lichens and fungi
2. cluster of sporangia usually on underside of a fern frond