Bernice Puahi Bishop Museum · CC BY-NC · GBIF · full resolution
Mastocarpus stellatus
false Irish moss
As recorded: Mastocarpus stellatus (Stackhouse) Guiry, 1984
Plantae › Rhodophyta › Florideophyceae › Gigartinales › Phyllophoraceae
- Collected by
- Stephenson, T.A.; Stephenson, A.A. Stephenson →T.A. Stephenson →
- Collector number
- NSBF 13
- Date
- August 1, 1948
- Locality
- Bay of Fundy, Hall's Harbour
- Region
- Nova Scotia, Canada
- Identified by
- Hare, J.C.
- Record type
- Preserved specimen
Collected the same day
On August 1, 1948, Stephenson, T.A.; Stephenson, A. also collected 9 other specimens.
Mastocarpus stellatus observed alive
This specimen was collected in 1948. Since 2000, iNaturalist observers have recorded 349 research-grade sightings in the wild, most recently on 2026-10-10.

2026-10-10
Falmouth, England, GB
(c) tedcollins12345, some rights reserved (CC BY-NC)

2026-10-10
Chathill, England, GB
(c) Sam Greenwood, some rights reserved (CC BY-NC)

2026-09-30
Castle Drive, Falmouth, England, GB
(c) Haris :), some rights reserved (CC BY-NC)

2026-09-27
Ría de La Coruña, La Corogne, ES
(c) Anna Bueno, some rights reserved (CC BY-NC)

2026-09-13
France
(c) Anne-Hélène Paradis, some rights reserved (CC BY-NC)

2026-09-10
France
(c) Jörg Schneider, some rights reserved (CC BY-NC)
Observations and photos from iNaturalist, shown only when openly licensed.
Cite this specimen
Mastocarpus stellatus. BISH 532475. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956587251. Accessed via explore.bishopmuseum.org/specimens/bish/532475.
Record sources
- GBIF occurrence 5956587251 ↗
- Data license: CC_BY_NC_4_0
- Last harvested October 26, 2026
