Crossword Clue:

THYRSE a type of flower cluster also THYRSUS

AnswerCrossword Clue
RACEMEFlower cluster whose name can also be read as a challenge
CYMEType of flower cluster
UMBELA flower cluster
UMBELFlower cluster, as on a carrot
UMBELFlower cluster, as on a carrot plant
UMBELA flower cluster, such as Queen Anne's lace.
RACEMEFlower cluster on a single stem, as in the honey locust