Bernice Puahi Bishop Museum · CC BY-NC · GBIF · full resolution
Isoetes howellii
Howell's quillwort
As recorded: Isoetes howellii Engelm.
Plantae › Tracheophyta › Lycopodiopsida › Isoetales › Isoetaceae
- Collected by
- Tyhorne, R.F.; Lathrop, E.E. Lathrop →R.F. Tyhorne →
- Collector number
- 37942
- Date
- May 12, 1969
- Locality
- Riverside County. Santa Rosa Plateau, Mesa de Colorado, Rancho California.
- Region
- California, United States
- Elevation
- 625 m
- Record type
- Preserved specimen
Isoetes howellii observed alive
This specimen was collected in 1969. Since 2000, iNaturalist observers have recorded 46 research-grade sightings in the wild, most recently on 2026-04-21.
2026-04-21
Herald, CA, US
(c) Kyle Elshoff, some rights reserved (CC BY)
2026-04-21
Sacramento, CA, US
(c) Kyle Elshoff, some rights reserved (CC BY)
2026-04-21
Sacramento, CA, US
(c) Kyle Elshoff, some rights reserved (CC BY)
2026-04-21
Sacramento, CA, US
(c) Lauren Glevanik, some rights reserved (CC BY-NC)
2026-04-11
Le Grand, CA, US
(c) Fred Watson, some rights reserved (CC BY-NC)
2025-08-08
Summit County, US-UT, US
(c) Braydon Lake, some rights reserved (CC BY-NC)
Observations and photos from iNaturalist, shown only when openly licensed.
Cite this specimen
Isoetes howellii. BISH 403730. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956699379. Accessed via explore.bishopmuseum.org/specimens/bish/403730.
Record sources
- GBIF occurrence 5956699379 ↗
- Data license: CC_BY_NC_4_0
- Last harvested October 26, 2026