Bernice Puahi Bishop Museum · CC BY-NC · GBIF · full resolution
Ulva flexuosa
Flexuous Gutweed
As recorded: Ulva flexuosa Wulfen
Plantae › Chlorophyta › Ulvophyceae › Ulvales › Ulvaceae
- Collected by
- Tsuda, R.T.
- Collector number
- RT 596
- Date
- December 6, 1963
- Locality
- Laysan Island
- Island
- Laysan
- Region
- Hawaii, United States
- Record type
- Preserved specimen
Collected the same day
On December 6, 1963, Tsuda, R.T. also collected 24+ other specimens.
Ulva flexuosa observed alive in Hawaiʻi
This specimen was collected in 1963. Since 2000, iNaturalist observers have recorded 4 research-grade sightings in the wild, most recently on 2026-03-08.

2026-03-08
Honolulu, HI, US
(c) charlottegerber, some rights reserved (CC BY-NC)

2023-06-30
Ewa Beach, HI, USA
(c) gill_, some rights reserved (CC BY-NC)

2023-04-07
Oʻahu, Ewa Beach, HI, US
(c) tkeomaka, some rights reserved (CC BY-NC)

2016-08-16
Napili, Maui, Hawai'i, USA
(c) sea-kangaroo, some rights reserved (CC BY-NC-ND)
Observations and photos from iNaturalist, shown only when openly licensed.
Cite this specimen
Ulva flexuosa. BISH 516408. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956494517. Accessed via explore.bishopmuseum.org/specimens/bish/516408.
Record sources
- GBIF occurrence 5956494517 ↗
- Data license: CC_BY_NC_4_0
- Last harvested October 26, 2026
