Answer:

sori

Answer	Crossword Clue
SORI	Spore clusters
SORI	Fern parts
SORI	Fern spore-class clusters

SORI	Fruit dots.
SORI	Spore cases on a fern frond.
SORI	Fruit dots on ferns.
SORI	Spore cases on a fern.
SORI	Fern dots.
SORI	Fruit dots of ferns.
SORI	Spore cases.
SORI	Fern spores.

SORI	Spore clusters on ferns.
SORI	Spore cases on ferns.
SORI	Spores.
SORI	Fern clusters.
SORI	Fern clusters
SORI	Fern spores
SORI	Clusters on ferns
SORI	Fruit dots

SORI	Plant clusters
SORI	Fruit dots on ferns
SORI	Fern fruit dots
SORI	Fern spore clusters
SORI	Clusters of cells on ferns
SORI	Spores
SORI	Ferns' spore cases
SORI	Spore-case clusters

SORI	Spore clusters on ferns
SORI	Clusters of spores

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.