Umbrella plant (Cyperus alternifolius). Called Umbrella palm, Umbrella papyrus and Umbrella sedge also. Another scientific name is Cyperus involucratu Stock Photo - Alamy
Cyperus Umbrella Pond marginal Plant! Indoor plant or outdoor, can grow to 6ft! | eBay
Umbrella Plant Care - Growing Cyperus Umbrella Plants Indoors