Bernice Puahi Bishop Museum · CC BY-NC · GBIF · full resolution
Carex wahuensis
Oahu Sedge
As recorded: Carex wahuensis subsp. rubiginosa (R.W.Krauss) T.Koyama
Plantae › Tracheophyta › Liliopsida › Poales › Cyperaceae
- Collected by
- Gustafson, R.
- Collector number
- 1089
- Date
- July 13, 1978
- Locality
- N Hilo, Humuula, Saddle Rd. jct. with road leading to Hale Pohaku
- Island
- Hawaiʻi Island
- Region
- Hawaii, United States
- Elevation
- 1,890 m
- 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 July 13, 1978, Gustafson, R. also collected 9 other specimens.
Carex wahuensis observed alive in Hawaiʻi
This specimen was collected in 1978. Since 2000, iNaturalist observers have recorded 226 research-grade sightings in the wild, most recently on 2026-10-26.

2026-10-26
Haleakalā National Park, Kula, HI, US
(c) ka_y_ak, some rights reserved (CC BY-NC)

2026-09-29
Kula, HI 96790, USA
(c) Craig Ontl, some rights reserved (CC BY-NC)

2026-09-11
East Honolulu, HI, US
(c) ash253808, some rights reserved (CC BY-NC)

2026-08-11
Hawaii County, US-HI, US
(c) Jason Flor Flores, some rights reserved (CC BY-NC)

2026-08-10
Lanai City
(c) seawolf26, some rights reserved (CC BY-NC)

2026-08-10
Lanai City
(c) seawolf26, some rights reserved (CC BY-NC)
Observations and photos from iNaturalist, shown only when openly licensed.
Cite this specimen
Carex wahuensis. BISH 430731. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956555970. Accessed via explore.bishopmuseum.org/specimens/bish/430731.
Record sources
- GBIF occurrence 5956555970 ↗
- Data license: CC_BY_NC_4_0
- Last harvested October 26, 2026
