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Cyperus grayioides
Also called Mohlenbrock's Umbrella Sedge, Umbrella Sedge
Cyperus grayoides is a species of sedge known as Illinois flatsedge and Mohlenbrock's umbrella sedge. It is endemic to the United States, where its distribution extends from Illinois through Missouri and Arkansas to Texas and Louisiana.
This perennial herb grows from a network of tuberous rhizomes, producing clumps of triangular stems up to 35 to 48 centimeters tall. The gray-green leaves are up to 25 centimeters long. The inflorescence is a cluster of several rounded spikes containing many spikelets.
Cyperus absconditicoronatus · Cyperus acholiensis · Tapertip flatsedge · Cyperus afroalpinus · Cyperus afrodunensis · Cyperus afromontanus · Cyperus afrovaricus · Inflatedscale flatsedge · Cyperus ajax · Cyperus alaticaulis · Cyperus albopilosus · Cyperus albopurpureus
Text excerpted from the Wikipedia article Cyperus grayoides by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
