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Rhynchospora rugosa

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

BISH 117546Botany

Rhynchospora rugosa

Claybank Beak Sedge

As recorded: Rhynchospora rugosa subsp. lavarum (Gaudich.) T.Koyama

Plantae › Tracheophyta › Liliopsida › Poales › Cyperaceae

Collected by: Forbes, C.N.
Collector number: 183 K
Date: August 1, 1909
Locality: Wahiawa Swamp
Island: Kauaʻi
Region: Hawaii, United States
Identified by: Wagner, W.L.; Herbst, D.R.Derral R. Herbst →Warren L. Wagner Jr. →
Record type: Preserved specimen

125 Bishop specimens of Rhynchospora rugosa · collected 1845–2024Species page ›

Rhynchospora rugosa observed alive in Hawaiʻi

This specimen was collected in 1909. Since 2000, iNaturalist observers have recorded 11 research-grade sightings in the wild, most recently on 2025-11-21.

Rhynchospora rugosa observed 2025-11-21

2025-11-21

Kalihi Valley, Honolulu, HI 96819, USA

(c) Kevin Faccenda, some rights reserved (CC BY)

Rhynchospora rugosa observed 2025-07-02

2025-07-02

Kalihi Valley, Honolulu, HI 96819, USA

(c) Kevin Faccenda, some rights reserved (CC BY)

Rhynchospora rugosa observed 2025-05-19

2025-05-19

Manana Ridge Trail, Aiea, HI, US

(c) Kellen Apuna, some rights reserved (CC BY-NC)

Rhynchospora rugosa observed 2025-01-25

2025-01-25

Pearl City, HI 96782, USA

no rights reserved

Rhynchospora rugosa observed 2024-12-08

2024-12-08

Palolo, Honolulu, HI, USA

no rights reserved

Rhynchospora rugosa observed 2024-07-07

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 117546. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956352107. Accessed via explore.bishopmuseum.org/specimens/bish/117546.

Record sources

GBIF occurrence 5956352107 ↗
Data license: CC_BY_NC_4_0
Last harvested October 26, 2026