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Cyperaceae
Cyperus

not marked as a favorite taxon Cyperus erythrorhizos Muhlenberg. Common name: Redrooted Flatsedge. Phenology: Jul-Dec. Habitat: Marshes, ditches, shores, mud flats. Distribution: Massachusetts west to North Dakota and Washington, south to n. Florida, Louisiana, Texas, Arizona, California, and Mexico (Baja California, Tabasco, Tamaulipas).

Glossary (beta!)

ID notes: This species is frequently confused with C. odoratus, with which it is often closely associated. The neatly quadrangular spikelets with tiny (≤ 1.5 mm), closely imbricate scales (vs. terete, jointed spikelets with > 2 mm, loosely spaced scales) easily distinguish even depauperate plants of C. erythrorhizos at a glance.

Origin/Endemic status: Native

Synonymy ⓘ: = Ar, C, Can, ETx1, F, FNA23, G, GrPl, GW1, Il, K1, K4, Mex, Mi, Mo1, NcTx, NE, NS, NY, Pa, POWO, RAB, Tat, Tn, Tx, Va, W, WH3, WV; > Cyperus erythrorhizos Muhlenberg — S; > Cyperus halei Torr. ex Britton — S. Basionym: Cyperus erythrorhizos Muhlenberg 1817

Links to other floras: = Cyperus erythrorhizos - FNA23

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: OBL
  • Eastern Mountains and Piedmont: FACW
  • Great Plains: OBL
  • Midwest: OBL
  • Northcentral & Northeast: OBL

Heliophily ⓘ: 9

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image #1 of Cyperus erythrorhizos© Bruce A. Sorrie | Original Image ⭷
image #2 of Cyperus erythrorhizos© Erik Danielson source | Original Image ⭷
image #4 of Cyperus erythrorhizos© Gary P. Fleming | Original Image ⭷
image #5 of Cyperus erythrorhizos© Keith Bradley | Original Image ⭷
image #10 of Cyperus erythrorhizos© Radford, Ahles and Bell | Original Image ⭷

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Horticultural Information

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