Copy permalink to share

Cyperus compressus Linnaeus. Common name: Poorland Flatsedge. Phenology: Jul-Sep. Habitat: Sandy fields, disturbed areas. Distribution: Pantropical and warm temperate, north in North America to s. NY, s. OH, s. IL, and e. TX, the northern extent of the native range uncertain. Reported for s. IN by Bill Thomas (pers.comm., 2022).

ID notes: Occasionally mistaken for a member of subgenus Pycreus. The dark black, obviously trigonous achenes and mucronate scales distinguish it easily under a hand lens.

Origin/Endemic status: Native

Synonymy ⓘ: = Ar, Bah, C, ETx1, F, FNA23, G, GW1, Il, K4, Mex, Mo1, NcTx, NS, NY, Pa, POWO, RAB, S, Tat, Tn, Tx, Va, W, WH3. Basionym: Cyperus compressus L. 1753

Links to other floras: = Cyperus compressus - FNA23

Show in key(s)

Show parent genus | Show parent in key(s)

Wetland Indicator Status:

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

Heliophily ⓘ: 9

Your browser does not support SVGs

Hover over a shape, letter, icon, or arrow on the map for definition or see the legend.

image of plant© Jay Horn source | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Jay Horn source | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Jay Horn source | Original Image ⭷
image of plant© Jay Horn source | Original Image ⭷
image of plant© Radford, Ahles and Bell | Original Image ⭷

Feedback

See something missing or incorrect about Cyperus compressus? Let us know here:

  1. Please include your name and if possible, email in case when need to clarify what you wrote.
  2. If you opt out of including email, please be as specific as possible (e.g., which photo is incorrect?)
  3. Please do not submit questions asking to identify plants or about horticultural topics (e.g., how do I control an invasive plant in my garden?). Instead, those questions can be submitted here for the Carolinas region only.
  4. Please do not send us feedback about unkeyed species as this work is ongoing.
  5. Please allow time for flora edits to show in our next data release. We greatly appreciate your feedback but may require extra time to research complicated taxonomic issues.

Horticultural Information

NCBG trait

Intro:

Stems:

Leaves:

Inforescence:

Flowers:

Fruits:

Comments:

Height:

plant sale text:

bloom table text:

description:

stems:

leaves:

inflorescence:

flowers:

fruits:

comments:

cultural notes:

germination code:

native range:



0 unsaved edits on this page.