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Sargassum obtusifolium

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

BISH 512540Botany

Sargassum obtusifolium

As recorded: Sargassum obtusifolium J.Agardh, 1848

Chromista › Ochrophyta › Phaeophyceae › Fucales › Sargassaceae

Collected by: Tsuda, R.T.
Collector number: 552
Date: December 6, 1963
Locality: In tidepool on southernmost point of coral ledge on southwestern side of island.
Island: Laysan
Region: Hawaii, United States
Identified by: Magruder, W.H.
Record type: Preserved specimen

348 Bishop specimens of Sargassum obtusifolium · collected 1912–2024Species page ›

Sargassum obtusifolium observed alive in Hawaiʻi

This specimen was collected in 1963. Since 2000, iNaturalist observers have recorded 3 research-grade sightings in the wild, most recently on 2022-04-03.

Sargassum obtusifolium observed 2022-04-03

2022-04-03

Mokapu, MCBH, HI 96734, USA

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

Sargassum obtusifolium observed 2018-05-23

2018-05-23

Napili, Maui, Hawai'i, USA

(c) sea-kangaroo, some rights reserved (CC BY-NC-ND)

Sargassum obtusifolium observed 2016-01-21

2016-01-21

Kamaole Beach Park, Wailea, HI, US

(c) Kai Joaquin, some rights reserved (CC BY-NC)

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

Cite this specimen

Sargassum obtusifolium. BISH 512540. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956251920. Accessed via explore.bishopmuseum.org/specimens/bish/512540.

Record sources

GBIF occurrence 5956251920 ↗
Data license: CC_BY_NC_4_0
Last harvested October 26, 2026