
Cardamine oligosperma
little western bittercress
As recorded: Cardamine oligosperma Nutt.
Plantae › Tracheophyta › Magnoliopsida › Brassicales › Brassicaceae
- Collected by
- St.John, H.
- Collector number
- 3476
- Date
- May 10, 1925
- Locality
- Divide Creek, R3 10, T29 N; Idaho Co.
- Region
- Idaho, United States
- Record type
- Preserved specimen
Collected the same day
On May 10, 1925, St.John, H. also collected 18 other specimens.
Cardamine oligosperma observed alive
This specimen was collected in 1925. Since 2000, iNaturalist observers have recorded 628 research-grade sightings in the wild, most recently on 2026-07-06.

2026-07-06
North Okanagan, BC, Canada
(c) Taylor Justason, some rights reserved (CC BY-NC)

2026-05-10
Benton County, OR, USA
(c) Barbara L. Wilson, some rights reserved (CC BY-NC)

2026-05-03
Cascade Locks, OR 97014, USA
(c) David Anderson, some rights reserved (CC BY)

2026-04-26
Lane County, OR, USA
(c) Oliver White, some rights reserved (CC BY-NC)

2026-04-25
Port Townsend, WA 98368, USA
(c) K D, some rights reserved (CC BY-NC)

2026-04-25
Discovery Bay, Washington 98368, USA
(c) David Thielk, some rights reserved (CC BY-NC)
Observations and photos from iNaturalist, shown only when openly licensed.
Cite this specimen
Cardamine oligosperma. BISH 450277. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956359788. Accessed via explore.bishopmuseum.org/specimens/bish/450277.
Record sources
- GBIF occurrence 5956359788 ↗
- Data license: CC_BY_NC_4_0
- Last harvested October 26, 2026
