Bernice Puahi Bishop Museum · CC BY-NC · GBIF · full resolution
Hymenasplenium unilaterale
Halved-Spleenwort
As recorded: Hymenasplenium unilaterale (Lam.) Hayata
Plantae › Tracheophyta › Polypodiopsida › Polypodiales › Aspleniaceae
- Collected by
- St.John, H.
- Collector number
- 13172
- Date
- May 14, 1933
- Locality
- 2nd gulch, e. of Puu Kaupakuhale. n.e. slope of Puu Kaala, Waianae Mts. Mokuleia
- Island
- Oʻahu
- Region
- Hawaii, United States
- Elevation
- 549 m
- Identified by
- Smith, A.R.
- Record type
- Preserved specimen
Collected the same day
On May 14, 1933, St.John, H. also collected 18 other specimens.
Hymenasplenium unilaterale observed alive in Hawaiʻi
This specimen was collected in 1933. Since 2000, iNaturalist observers have recorded 23 research-grade sightings in the wild, most recently on 2026-06-08.

2026-06-08
Maui County, US-HI, US
(c) Remy Henderson, some rights reserved (CC BY-NC)

2025-11-22
Hawaii, US
(c) Julien Carley-Windeler, some rights reserved (CC BY-NC)

2025-10-05
Hawaii, US
(c) Daniel Ward, some rights reserved (CC BY-NC)

2025-04-15
Hawaii, US
(c) Julien Ueda, some rights reserved (CC BY-NC)

2025-01-23
Hawaii, US
(c) Andrew Evans, some rights reserved (CC BY-NC)

2024-12-20
Hawaii, US
(c) Kevin Faccenda, some rights reserved (CC BY)
Observations and photos from iNaturalist, shown only when openly licensed.
Cite this specimen
Hymenasplenium unilaterale. BISH 3374. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956505408. Accessed via explore.bishopmuseum.org/specimens/bish/3374.
Record sources
- GBIF occurrence 5956505408 ↗
- Data license: CC_BY_NC_4_0
- Last harvested October 26, 2026
