BISH 681504Botany

Halimeda opuntia

watercress alga

As recorded: Halimeda opuntia (L.) J.V.Lamour.

Plantae › Chlorophyta › Ulvophyceae › Bryopsidales › Halimedaceae

Collected by: Horwitz, L.
Collector number: MSD 161
Date: July 27, 1951
Locality: Ine Island
Island: Arno Atoll
Region: Marshall Islands
Identified by: Moul, E.T.
Record type: Preserved specimen

903 Bishop specimens of Halimeda opuntia · collected 1902–2016Species page ›

Collected the same day

On July 27, 1951, Horwitz, L. also collected 24+ other specimens.

Halimeda opuntia observed alive

This specimen was collected in 1951. Since 2000, iNaturalist observers have recorded 25 research-grade sightings in the wild, most recently on 2026-04-27.

2026-04-27

Curaçao

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

2025-05-07

Pigeon Island, Sri Lanka

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

2025-05-03

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

2024-12-29

El Qoseir, Red Sea Governorate, Egypte

(c) Marleen Schouten, some rights reserved (CC BY-NC)

2024-01-03

Fisherman's Rock, North Sound, Grand Cayman

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

2023-09-13

Bonaire, Lac Bay, Caribbean Netherlands

(c) Jay Brasher, some rights reserved (CC BY)

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

Cite this specimen

Halimeda opuntia. BISH 681504. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956419655. Accessed via explore.bishopmuseum.org/specimens/bish/681504.

Record sources

GBIF occurrence 5956419655 ↗
Data license: CC_BY_NC_4_0
Last harvested October 26, 2026