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Cyperus rotundus

Bernice Puahi Bishop Museum · CC BY-NC · GBIF · full resolution

BISH 436296Botany

Cyperus rotundus

Purple nutsedge

As recorded: Cyperus rotundus L.

Plantae › Tracheophyta › Liliopsida › Poales › Cyperaceae

Collected by: Herbst, D.R.; Takeuchi, W.N.Derral R. Herbst →Wayne N. Takeuchi →
Collector number: 6336
Date: June 29, 1980
Locality: Sand Island
Island: Midway Atoll
Region: Hawaii, United States
Identified by: Herbst, D.R.; Sohmer, S.H.; Wagner, W.L.Derral R. Herbst →Seymour H. Sohmer →Warren L. Wagner Jr. →
Record type: Preserved specimen

157 Bishop specimens of Cyperus rotundus · collected 1893–2022Species page ›

Cyperus rotundus observed alive in Hawaiʻi

This specimen was collected in 1980. Since 2000, iNaturalist observers have recorded 129 research-grade sightings in the wild, most recently on 2026-10-19.

Cyperus rotundus observed 2026-10-19

2026-10-19

Pokole St, Honolulu, HI, US

(c) jordan loftin, some rights reserved (CC BY-NC)

Cyperus rotundus observed 2026-10-18

2026-10-18

Dole St + Hale Aloha Rd, Honolulu, HI 96822, USA

no rights reserved

Cyperus rotundus observed 2026-10-12

2026-10-12

Waialua, HI 96791, USA

no rights reserved

Cyperus rotundus observed 2026-10-03

2026-10-03

Kalanianaole Hwy + Kuliouou Rd, Honolulu, HI 96821, USA

no rights reserved

Cyperus rotundus observed 2026-09-24

2026-09-24

Hawaii, US

(c) makastner, some rights reserved (CC BY-NC)

Cyperus rotundus observed 2026-09-08

2026-09-08

Kauai County, US-HI, US

(c) Rowan Willow, some rights reserved (CC BY-NC)

Observations and photos from iNaturalist, shown only when openly licensed.

Cite this specimen

Cyperus rotundus. BISH 436296. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956514517. Accessed via explore.bishopmuseum.org/specimens/bish/436296.

Record sources

GBIF occurrence 5956514517 ↗
Data license: CC_BY_NC_4_0
Last harvested October 26, 2026