Bernice Puahi Bishop Museum · CC BY-NC · GBIF · full resolution
Pteris irregularis
As recorded: Pteris irregularis Kaulf.
Plantae › Tracheophyta › Polypodiopsida › Polypodiales › Pteridaceae
- Collected by
- Hatheway, W.H.; Greenwell, A.; Degener, O.Otto Degener →Arthur Greenwell →W.H. Hatheway →
- Collector number
- 408
- Date
- July 30, 1950
- Locality
- E branch of E. Makaleha Valley
- Island
- Oʻahu
- Region
- Hawaii, United States
- Elevation
- 610 m
- Identified by
- Lamoureux, C.H.
- Record type
- Preserved specimen
Collected the same day
On July 30, 1950, Hatheway, W.H.; Greenwell, A.; Degener, O. also collected 1 other specimen.
Pteris irregularis observed alive in Hawaiʻi
This specimen was collected in 1950. Since 2000, iNaturalist observers have recorded 3 research-grade sightings in the wild, most recently on 2026-04-14.

2026-04-14
Hawaii, US
(c) rokkenolan, some rights reserved (CC BY-NC)

2023-05-28
Hawaii, US
(c) Kevin Faccenda, some rights reserved (CC BY)

2022-03-23
Hawaii, US
(c) Kyhl Austin, some rights reserved (CC BY-NC)
Observations and photos from iNaturalist, shown only when openly licensed.
Cite this specimen
Pteris irregularis. BISH 9012. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956225513. Accessed via explore.bishopmuseum.org/specimens/bish/9012.
Record sources
- GBIF occurrence 5956225513 ↗
- Data license: CC_BY_NC_4_0
- Last harvested October 26, 2026
