Calflora: Cyperus difformis

Cyperus difformis L.

variable flatsedge

Cyperus difformis, a monocot, is an annual herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.

Communities:	weed, species characteristic of disturbed places, wetland-riparian
Habitat:	disturbed [Walker]
Wetlands:	Occurs almost always under natural conditions in wetlands [U.S. Fish & Wildlife Service.]
Elevation:	between 328 and 1640 feet
Family:	CYPERACEAE
Related:	See a list of other species in the genus Cyperus found in California.

Name Status:

Accepted by TJM2 + PLANTS + JM93

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Distribution by County:

See a detailed Distribution Grid of this plant in California.

A shaded county indicates that there are ocurrence records of this plant within the county.

Hover the mouse over the map to see county names. Click to view records from that county.

	There are specimen records from this county in an herbarium.
	There are documented records, vouchered or confirmed by an expert.
	There are reported records.
	There are reported records available indirectly (eg. in botanical literature).

Records by County, with approximate record counts in the form: TOTAL / CCH. Click county name to view records.

Alameda: 1 / 1 CCH Butte: 50 / 45 CCH Contra Costa: 1 / 1 CCH Colusa: 10 / 10 CCH Fresno: 2 / 2 CCH Glenn: 9 / 5 CCH Imperial: 1 / 1 CCH Kern: 4 / 3 CCH Los Angeles: 15 / 14 CCH Madera: 5 / 4 CCH Merced: 10 / 8 CCH Marin: 3 / 1 CCH Napa: 4 / 1 CCH Nevada: 1 / 1 CCH Orange: 1 / 1 CCH Plumas: 1 / 1 CCH Riverside: 15 / 15 CCH Sacramento: 10 / 6 CCH Santa Barbara: 8 / 7 CCH San Bernardino: 5 / 5 CCH San Benito: 2 / 0 CCH Santa Cruz: 1 / 1 CCH San Diego: 6 / 5 CCH San Francisco: 3 / 1 CCH San Joaquin: 1 / 0 CCH San Mateo: 1 / 0 CCH Sonoma: 3 / 1 CCH Stanislaus: 4 / 4 CCH Sutter: 10 / 8 CCH Tehama: 11 / 9 CCH Tulare: 1 / 1 CCH Yolo: 3 / 2 CCH Yuba: 3 / 3 CCH

CCH: records provided by the participants of the Consortium of California Herbaria.

Information about Cyperus difformis from other sources:

Photos on Picasa / Flickr / Google Images
website references on Google
USDA PLANTS Profile (CYDI4)
Nursery availability and horticultural info (what grows with this plant?) on CNPLX
2012 Jepson Manual Treament from the Jepson Herbarium,
University of California, Berkeley
Original Publication citation. on the International Plants Names Index
Search efloras.org (Flora of North America)
Search the Lady Bird Johnson Wildflower Center Native Plant Database