NameThatPlant.net: Cyperus rotundus

Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Commelinids: Poales

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Cyperus rotundus FAMILY Cyperaceae Go to FSUS key

Dig deeper at SERNEC, a consortium of southeastern herbaria.

Check out EDDMapS.org to see where this has been reported.

Read more about Purple Nutsedge at Vascular Plants of North Carolina.

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Cyperus rotundus FAMILY Cyperaceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)

Cyperus rotundus

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 23 (2002)

Cyperus rotundus

SYNONYMOUS WITH Floristic Synthesis of North America (Kartesz, 1999)

Cyperus rotundus

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 030-01-018:

Cyperus rotundus FAMILY Cyperaceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)

Cyperus rotundus

COMMON NAME:
Purple Nutsedge, Nutgrass, Cocograss

To see larger pictures, click or hover over the thumbnails.

image of Cyperus rotundus, Purple Nutsedge, Nutgrass, Cocograss

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_cyro_001_lvd

USDA / Selected Weeds of the US. 1970 swus_page_099

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Cyperus rotundus FAMILY Cyperaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Cyperus rotundus FAMILY Cyperaceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Cyperus rotundus

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 23
Cyperus rotundus

SYNONYMOUS WITH Floristic Synthesis of North America (Kartesz, 1999)
Cyperus rotundus

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 030-01-018:
Cyperus rotundus FAMILY Cyperaceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Cyperus rotundus

424

Grass, Sedge, or Rush
Perennial

Habitat: Gardens, fields, disturbed areas, per Weakley's Flora

Non-native

Common (uncommon in NC Piedmont, rare in Mountains)

map
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.

LEAVES:
Simple
Mostly basal

FLOWER:
Spring/Summer/Fall
Superior ovary
Bisexual

FRUIT:
Spring/Summer/Fall
Reddish
Nutlet

TO LEARN MORE about this plant, look it up in a good book!

“To learn how to observe and how to distinguish things correctly, is the greater part of education, and is that in which people otherwise well educated are apt to be surprisingly deficient. Natural objects, everywhere present and endless in variety, afford the best field for practice; and the study when young, first of Botany, and afterwards of other Natural Sciences, as they are called, is the best training that can be in these respects. This study ought to begin even before the study of language. For to distinguish things scientifically (that is, carefully and accurately) is simpler than to distinguish ideas. And in Natural History the learner is gradually led from the observation of things, up to the study of ideas or the relations of things.” — Asa Gray, in How Plants Grow: A Simple Introduction to Structural Botany

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