Bernice Puahi Bishop Museum · CC BY-NC · GBIF · full resolution
Cyperus difformis
As recorded: Cyperus difformis L.
Plantae › Tracheophyta › Liliopsida › Poales › Cyperaceae
- Collected by
- Hosaka, E.Y.
- Collector number
- 4216
- Date
- June 17, 1936
- Locality
- Makaha Valley, Reservoir
- Island
- Oʻahu
- 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
Collected the same day
On June 17, 1936, Hosaka, E.Y. also collected 13 other specimens.
Ammannia coccinea
Botany
Ammannia coccinea
Botany
Ammannia coccinea
Botany
Bothriochloa pertusa
Botany
Cyperus difformis
Botany
Cyperus difformis
Botany
Digitaria setigera
Botany
Echinochloa crus-galli
Botany
Echinochloa crus-galli
Botany
Eclipta alba
Botany
Eclipta alba
Botany
Eragrostis cilianensis
Botany
Eriochloa procera
Botany
Cyperus difformis observed alive in Hawaiʻi
This specimen was collected in 1936. Since 2000, iNaturalist observers have recorded 21 research-grade sightings in the wild, most recently on 2026-08-07.
2026-08-07
Salt Lake Bl + Kalaloa St, Halawa, HI 96701, USA
no rights reserved
2026-05-24
Hilo, HI 96720, USA
(c) rathbunjon, some rights reserved (CC BY-NC)
2026-02-12
Hawaii, US
(c) Andrew Evans, some rights reserved (CC BY-NC)
2025-08-24
United States
(c) Tara Severns, some rights reserved (CC BY)
2024-12-28
Waipahu, HI 96797, USA
no rights reserved
2024-11-15
Kahekili Hwy + Ahaolelo Rd, Hawaii 96744, USA
no rights reserved
Observations and photos from iNaturalist, shown only when openly licensed.
Cite this specimen
Cyperus difformis. BISH 446892. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956156850. Accessed via explore.bishopmuseum.org/specimens/bish/446892.
Record sources
- GBIF occurrence 5956156850 ↗
- Data license: CC_BY_NC_4_0
- Last harvested October 26, 2026