umbellule

noun
um·​bel·​lule | \ˈəmbəˌlül, -əlˌyül;ˌəmˈbel(ˌ)yül\
plural -s

Definition of umbellule 

: a secondary umbel in a compound umbel

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History and Etymology for umbellule

New Latin umbellula, diminutive of umbella

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