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Cyperaceae
Cyperus

not marked as a favorite taxon Cyperus acuminatus Torrey & Hooker ex Torrey. Common name: Pointed Flatsedge. Phenology: May-Oct. Habitat: Wet meadows or depressions, especially in glades, barrens, or woodlands over limestone; also ditches and sidewalk cracks. Distribution: IL west to ND, south to w. LA, TX, and n. Mexico (COA, NLE, TAM); disjunct from WA to s. CA; disjunct eastward at scattered localities in VA, NC, GA (Echols 2007), TN, KY, and OH (where probably native), and NY and NH (where probably introduced).

Glossary (beta!)

ID notes: The combination of pseudolateral inflorescences, spikelets in glomerulate heads, and excurved-mucronate scale apices is diagnostic. Forms of C. surinamensis with erect bracts may superficially resemble C. acuminatus, but lack excurved scale apices and usually have taller, densely antrorsely scabridulous culms.

Origin/Endemic status: Native

Synonymy ⓘ: = Ar, C, Can, ETx1, F, FNA23, G, GrPl, GW1, Il, K4, Mex, Mi, Mo1, NcTx, NE, NS, NY, Pa, POWO, Tn, Tx, W, Carter (1990); = n/a — RAB, Tat. Basionym: Cyperus acuminatus Torr. & Hook. ex Torr. 1836

Links to other floras: = Cyperus acuminatus - FNA23

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Wetland Indicator Status:

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

Heliophily ⓘ: 8

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image #1 of Cyperus acuminatus© Aidan Campos source | Original Image ⭷
image #2 of Cyperus acuminatus© Aidan Campos source | Original Image ⭷
image #3 of Cyperus acuminatus© Aidan Campos source | Original Image ⭷
image #4 of Cyperus acuminatus© Paul Marcum source | Original Image ⭷
image #6 of Cyperus acuminatus© Paul Marcum source | Original Image ⭷

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Horticultural Information

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