Ageratina adenophora
Crofton Weed
As recorded: Ageratina adenophora (Spreng.) R.M.King & H.Rob.
Plantae › Tracheophyta › Magnoliopsida › Asterales › Asteraceae
- Collected by
- Forbes, C.N.
- Collector number
- 324.M
- Date
- February 1, 1913
- Locality
- Ridge left of Lahainaluna Valley Camp 4
- Island
- Maui
- Region
- Hawaii, United States
- Identified by
- Herbst, D.R.; Sohmer, S.H.; Wagner, W.L.Derral R. Herbst →Seymour H. Sohmer →Warren L. Wagner Jr. →
- Record type
- Preserved specimen
Collected the same day
On February 1, 1913, Forbes, C.N. also collected 12 other specimens.
Ageratina adenophora observed alive in Hawaiʻi
This specimen was collected in 1913. Since 2000, iNaturalist observers have recorded 111 research-grade sightings in the wild, most recently on 2026-08-07.
2026-08-07
Hawaii, US
(c) Daniel Ward, some rights reserved (CC BY-NC)
2026-04-20
Sliding Sands Trail, Kula, HI, US
(c) annathn, some rights reserved (CC BY-NC)
2026-04-09
Kula, HI 96790, USA
(c) Mike Burnett, some rights reserved (CC BY)
2026-03-25
Maui County, HI, USA
(c) Daniel Ward, some rights reserved (CC BY-NC)
2026-03-12
Haleakalā National Park, Kula, HI, US
(c) lkfreidenburg, some rights reserved (CC BY-NC)
2026-03-03
Kula, HI 96790, USA
(c) Tyler Mode, some rights reserved (CC BY-NC)
Observations and photos from iNaturalist, shown only when openly licensed.
Cite this specimen
Ageratina adenophora. BISH 75192. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956698725. Accessed via explore.bishopmuseum.org/specimens/bish/75192.
Record sources
- GBIF occurrence 5956698725 ↗
- Data license: CC_BY_NC_4_0
- Last harvested October 26, 2026