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|Noun||1.||genus Roystonea - a monocotyledonous genus of West Indian feather palms|
liliopsid genus, monocot genus - genus of flowering plants having a single cotyledon (embryonic leaf) in the seed
Arecaceae, family Arecaceae, family Palmaceae, family Palmae, palm family, Palmaceae, Palmae - chiefly tropical trees and shrubs and vines usually having a tall columnar trunk bearing a crown of very large leaves; coextensive with the order Palmales