Bernice Puahi Bishop Museum · CC BY-NC · GBIF · full resolution
Rhynchospora rugosa
Claybank Beak Sedge
As recorded: Rhynchospora rugosa subsp. lavarum (Gaudich.) T.Koyama
Plantae › Tracheophyta › Liliopsida › Poales › Cyperaceae
- Collected by
- Warshauer, F.R.; NULL
- Collector number
- FRW 2288
- Date
- June 2, 1979
- Locality
- Kahaualea Ahupuaa, SE slope of Kilauea, E of Kilauea, Kilauea Iki Crater heading SE toward Maunaulu. Transect 35, Station 32.
- Island
- Hawaiʻi Island
- Region
- Hawaii, United States
- Elevation
- 1,011 m
- Identified by
- Faccenda, K.
- Record type
- Preserved specimen
Rhynchospora rugosa observed alive in Hawaiʻi
This specimen was collected in 1979. Since 2000, iNaturalist observers have recorded 11 research-grade sightings in the wild, most recently on 2025-11-21.

2025-11-21
Kalihi Valley, Honolulu, HI 96819, USA
(c) Kevin Faccenda, some rights reserved (CC BY)

2025-07-02
Kalihi Valley, Honolulu, HI 96819, USA
(c) Kevin Faccenda, some rights reserved (CC BY)

2025-05-19
Manana Ridge Trail, Aiea, HI, US
(c) Kellen Apuna, some rights reserved (CC BY-NC)

2025-01-25
Pearl City, HI 96782, USA
no rights reserved

2024-12-08
Palolo, Honolulu, HI, USA
no rights reserved

2024-07-07
Nāpali Coast State Wilderness Park, Princeville, HI, US
(c) Melisa Clarke, some rights reserved (CC BY-NC)
Observations and photos from iNaturalist, shown only when openly licensed.
Cite this specimen
Rhynchospora rugosa. BISH 805418. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 6546526511. Accessed via explore.bishopmuseum.org/specimens/bish/805418.
Record sources
- GBIF occurrence 6546526511 ↗
- Data license: CC_BY_NC_4_0
- Last harvested October 26, 2026
