umbrella plant

(noun) rhizomatous perennial herb with large dramatic peltate leaves and white to bright pink flowers in round heads on leafless stems; colonizes stream banks in the Sierra Nevada in California. Synonyms: umbrella plant, Indian rhubarb, Darmera peltata, Peltiphyllum peltatum.

(noun) late blooming perennial plant of shale barrens of Virginia having flowers in flat-topped clusters. Synonyms: umbrella plant, Eriogonum allenii.

(noun) African sedge widely cultivated as an ornamental water plant for its terminal umbrellalike cluster of slender grasslike leaves. Synonyms: umbrella plant, umbrella sedge, Cyperus alternifolius.