Cyperus rotundus

As recorded: Cyperus rotundus L.

Plantae › Tracheophyta › Liliopsida › Poales › Cyperaceae

Collected by: Whistler, W.A.
Collector number: W3429
Date: May 20, 1976
Locality: Trail from Taulaga to the Brachish water lagoon
Island: Swains Island
Region: American Samoa
Record type: Preserved specimen

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

Collected the same day

On May 20, 1976, Whistler, W.A. also collected 20 other specimens.

Cyperus rotundus observed alive

This specimen was collected in 1976. Since 2000, iNaturalist observers have recorded 3,651 research-grade sightings in the wild, most recently on 2026-10-27.

2026-10-27

N First St, Midlothian, TX, US

(c) Sam Kieschnick, some rights reserved (CC BY)

2026-10-26

Maple St, Denton, TX, US

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

2026-10-26

Country Lake Park, Hialeah, FL, US

(c) James K. Wetterer, some rights reserved (CC BY-NC)

2026-10-26

E Saint Francis Ave, Alton, TX, US

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

2026-10-25

Bastrop

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

2026-10-25

MGC3+V9, El Radar, 70902 Puerto Ángel, Oax., México

(c) Angie Judith, some rights reserved (CC BY-NC)

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

Cite this specimen

Cyperus rotundus. BISH 430438. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956466956. Accessed via explore.bishopmuseum.org/specimens/bish/430438.

Record sources

GBIF occurrence 5956466956 ↗
Data license: CC_BY_NC_4_0
Last harvested October 26, 2026