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Erigeron bonariensis

L. (1753)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Asterids Order: Asterales Family: Asteraceae Genus: Erigeron

hairy horseweed, ilioha, iliohe, lani wela, laniwela (Ni‘ihau via St. John)

Description

Key Characters:

Growth Form:

Stems:

Roots:

Leaves:

Flowers:

Fruit:

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Mokupāpapa (Kure atoll) Naturalized
Ni'ihau(Incl. Lehua) Naturalized
Kuaihelani (Midway Atoll) Naturalized
Kaua'i Naturalized
O'ahu Naturalized
Molokai Naturalized
Kamole(Laysan Island) Naturalized
Lana'i Naturalized
Kaho'olawe Naturalized
Lalo (French Frigate Shoals) Naturalized
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents

Water/Ocean
Wind

Pollinators

Bibliography

Name Published In: Sp. Pl.: 863 (1753)

Other References

Wagner et al. 1990:288 (Ku, Mi, La, FF, Ni, K, O, Mo, L, M, Ka, H [as Conyza bonariensis]); Wood & LeGrande 2006:20 (Le? [observed but no spm.]); Nesom 2008/Chen & Brouillet 2011 (Syn. C. bonariensis = E. bonariensis); Faccenda & Strong 2024:172 (remove Ni, Ka [re-IDed as E. sumatrensis], KEY); Naomi Worcester pers. comm. 2025 (Ku†, 2001)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Erigeron bonariensis Honolulu; In yard Preserved_Specimen Grant, M.L. 7351 Oahu BISH 1934-09-10
2 Erigeron bonariensis S slope of Haleakala; Lualailua Preserved_Specimen Forbes, C.N. 1983 Maui BISH 1920-03-17
3 Erigeron bonariensis Green Island. Most common in the lawn around the LORAN building Preserved_Specimen Herbst, D.R. 6260 Kure Atoll BISH 1979-01-04
4 Erigeron bonariensis Molokini Islet Preserved_Specimen Hobdy, R.W. 1226 Maui BISH 1982-02-14
5 Erigeron bonariensis Honolulu; In yard Preserved_Specimen Grant, M.L. 7351 Oahu BISH 1934-09-10
6 Erigeron bonariensis Honolulu; Old Naval Station Preserved_Specimen Garber, D.W. 12 Oahu BISH 1919-10-22
7 Erigeron bonariensis Tern Islet Preserved_Specimen Lamoureux, C.H. 1655 French Frigate Shoals BISH 1961-09-02
8 Erigeron bonariensis Honolulu; Keehi Lagoon; Kahakaaulana Island Preserved_Specimen Herbst, D.R. 6088 Oahu BISH 1978-04-30
9 Erigeron bonariensis Tern Islet Preserved_Specimen Lamoureux, C.H. 1665 French Frigate Shoals BISH 1961-09-02
10 Erigeron bonariensis Honolulu; University of Hawaii Manoa Campus Preserved_Specimen Herbst, D.R. 5121 Oahu BISH 1974-12-04
11 Erigeron bonariensis Honolulu; Koko Head Preserved_Specimen Forbes, C.N. 2418 Oahu BISH 1917-02-16
12 Erigeron bonariensis S slope of Haleakala, Manawainui Preserved_Specimen Forbes, C.N. 1879 Maui BISH 1920-03-07
13 Erigeron bonariensis Honolulu; In yard Preserved_Specimen Grant, M.L. 7351 Oahu BISH 1934-09-10
14 Erigeron bonariensis [Hawaiian Islands; U.S.A.; North-West Hawaiian Islands; Kure Atoll; Hawaii; Preserved_Specimen Lamoureux, C.H. 1909 Kure Atoll BISH 1961-09-13
15 Erigeron bonariensis Puna, flow of 1840, near RR track Preserved_Specimen Forbes, C.N. 1065 Hawaii BISH 1915-07-07
16 Erigeron bonariensis Puuwaawaa Preserved_Specimen Forbes, C.N. 54 Hawaii BISH 1911-06-08
17 Erigeron bonariensis Kailua; edge of Kaelepulu Pond; west borders Preserved_Specimen Neal, M.C. Oahu BISH 1940-06-11
18 Erigeron bonariensis Puuwaawaa Preserved_Specimen Austin, C.J. Hawaii BISH 1912-01-01
19 Erigeron bonariensis [Hawaiian Islands; U.S.A.; O`ahu; Hawai`i; Honolulu] Preserved_Specimen Inafuku, R. Oahu BISH 1930-11-01
20 Erigeron bonariensis Near Hilo, terminal portion of 1880-1 Lava Flow Preserved_Specimen Forbes, C.N. Hawaii BISH 1915-05-17
21 Erigeron bonariensis Bingham Tract Preserved_Specimen Forbes, A. Oahu BISH 1930-10-01
22 Erigeron bonariensis Mauna Kea Preserved_Specimen Adee, K.T. Hawaii BISH
23 Erigeron bonariensis Honolulu Preserved_Specimen Pukui, M.K. Oahu BISH 1931-01-01
24 Erigeron bonariensis [Hawaiian Islands; U.S.A.; North-West Hawaiian Islands; Laysan; Hawaii; Honolulu In sandy soil near a Casuarina tree. This plant has become widespread in the last decade or so. Preserved_Specimen Branching upright herb. Conant, S. 171 Laysan Island BISH 1983-07-25
25 Erigeron bonariensis Green Island. Along roadside and, in a few places, along runway Preserved_Specimen Lamoureux, C.H. 2769 Kure Atoll BISH 1964-08-14
26 Erigeron bonariensis Kalakaua Ave + Philip St Somewhat shady, dry area next to sidewalk, infrequently mowed Preserved_Specimen Abundant along road Faccenda, K. 1668.2 Oahu BISH 2020-08-14
27 Erigeron bonariensis West side of island Open sandy areas Preserved_Specimen Long, C.R. 2378 Laysan Island BISH 1964-09-19
28 Erigeron bonariensis Top of west ridge Sandy, inner edge of Scaevola, between Scaevola & Eragrostis Preserved_Specimen Herb 0.5 m tall Shelton, P.C. 415 Laysan Island BISH 1966-06-21
29 Erigeron bonariensis MPRC, 225° magnetic line from bvase of Bravo Trail, ca. 350 m from old burn area, ca 1.0 km E of Old Bobcat Trail. Gently sloping Styp;helia mixed shrubland. Old pahoehoe. Assocites: Styphelia tameiameiae, Dodonaea viscosa, Lythrum maritimum, Panicum sp. Preserved_Specimen Close, B. 109414 Hawaii BISH 1994-10-28
30 Erigeron bonariensis Southwest side of island Sandy substratum Preserved_Specimen Growing erect Walker, R. 503 Laysan Island BISH 1963-12-05
31 Erigeron bonariensis Waikii Edges of cornfields Preserved_Specimen Judd Jr., A.F. Hawaii BISH 1928-07-21
32 Erigeron bonariensis Puuwaawaa Rangeland paddock Preserved_Specimen Takeuchi, W.N. 5750 Hawaii BISH 1989-05-01
33 Erigeron bonariensis Honolulu; Honolulu District: Koko Head; east of Ihiihilauakea Crater entrance Mixed with Cynodon dactylon Preserved_Specimen Bruegmann, M.M. 177 Oahu BISH 1985-05-05
34 Erigeron bonariensis Kaupulehu Transect T18 Remnant Diospyros forest, common weed on kipuka border Preserved_Specimen Takeuchi, W.N. 5807 Hawaii BISH 1989-05-20
35 Erigeron bonariensis Mauna Kea, growing near skyline trail. SW slope of mt Vegetation scarce, mostly scattered mullein, grasses and Gnaphalium sandwicensium. Preserved_Specimen Davis, J. 574 Hawaii BISH 1981-07-30
36 Erigeron bonariensis Kahalui Industrial area In sand Preserved_Specimen Hobdy, R.W. 2083 Maui BISH 1984-05-08
37 Erigeron bonariensis Waialua; Waialua Beach Road, private lotus farm On dry bank of lotus field. Preserved_Specimen Weed. Imada, C. 9241 Oahu BISH 1992-04-05
38 Erigeron bonariensis East Maui, Hana District, Kahikinui AHU, Tr 25(10), S slope of Haleakala, N of Manawainui Gulch Dry native shrub with mixed grass community Preserved_Specimen Higashino, P.K. 9221 Maui BISH 1980-06-19
39 Erigeron bonariensis Top of west ridge Sandy, inner edge of Scaevola, between Scaevola & Eragrostis Preserved_Specimen Herb 0.5 m tall Shelton, P.C. 415 Laysan Island BISH 1966-06-21
40 Erigeron bonariensis West side of island Most abundant in the northwestern part In bunchgrass association Preserved_Specimen Herbst, D.R. 6510 Laysan Island BISH 1980-07-13
41 Erigeron bonariensis Laie; Mokuauia Island Thin soil on raised reef Preserved_Specimen Fosberg, F.R. 14153 Oahu BISH 1937-07-04
42 Erigeron bonariensis Honolulu; University of Hawaii Manoa Campus Ruderal Preserved_Specimen Erect herb to 1 m Swarbrick, J.T. 70 Oahu BISH 1976-01-10
43 Erigeron bonariensis East Maui, Hana District, SE of Hamoa to Waioka Coastal pasture lands Preserved_Specimen Herb of 2 ft. Seed heads yellowish-white. Flynn, T.W. 2566 Maui BISH 1987-10-27
44 Erigeron bonariensis Saddle road, Pohakuloa, about 32 miles from Hilo Growing with Gnaphalium sandwicensium, Verbascum, Oenothera, and grasses. Preserved_Specimen Small, infrequent herb. Davis, J. 568 Hawaii BISH 1981-07-22
45 Erigeron bonariensis Kaupo Trail Along trail in moist places Preserved_Specimen Introduced weed 4 ft. high Olson, G.E. 97 Maui BISH 1957-08-23
46 Erigeron bonariensis MPRC, 225° magnetic line from bvase of Bravo Trail, ca. 350 m from old burn area, ca 1.0 km E of Old Bobcat Trail. Gently sloping Styp;helia mixed shrubland. Old pahoehoe. Assocites: Styphelia tameiameiae, Dodonaea viscosa, Lythrum maritimum, Panicum sp. Preserved_Specimen Close, B. 109414 Hawaii BISH 1994-10-28
47 Erigeron bonariensis Lanai city, Gay St. along driveway in front of residence. Preserved_Specimen Weed. Plants branched near base. Only one plant seen in town, rare. Faccenda, K. 3171 Lanai BISH 2023-06-21
48 Erigeron bonariensis ahupuaa of Halepuaa Reserve in the Puna District Found growing on the side of the old railroad. Preserved_Specimen ESP Field Crew Hawaii BISH 1979-08-15
49 Erigeron bonariensis Central Maui, Kahalui Industrial area In sand Preserved_Specimen Hobdy, R.W. 2086 Maui BISH 1984-05-08
50 Erigeron bonariensis Kaupulehu, on transect T18 Remnant diospyros forest, on kipuka border. Preserved_Specimen Weed. Takeuchi, W.N. 5807 Hawaii BISH 1989-05-20
51 Erigeron bonariensis Southwest side of island Sandy substratum Preserved_Specimen Growing erect Walker, R. 503 Laysan Island BISH 1963-12-05
52 Erigeron bonariensis Kalaupapa; airport Preserved_Specimen annual or perennial herb Wysong, M.L. 407 Molokai BISH 2004-11-11
53 Erigeron bonariensis Mahana Preserved_Specimen Munro, G.C. 278 Lanai BISH 1913-10-01
54 Erigeron bonariensis Tern Islet Preserved_Specimen Herb with grey-green foliage Herbst, D.R. 6246 French Frigate Shoals BISH 1978-09-11
55 Erigeron bonariensis Upper Kula Road at junction of Kealaloa Road Preserved_Specimen Flowers 7 mm long x 5-6 mm wide at base x 3-4 mm wide at apex; involucral bracts purple tipped Hobdy, R.W. 1410 Maui BISH 1982-06-04
56 Erigeron bonariensis Mokulua (north), summit Preserved_Specimen Egler, F.E. 37254 Oahu BISH 1937-08-22
57 Erigeron bonariensis Kalaupapa NHP, trail, switchback 3 Preserved_Specimen Common herb in weedy areas Wysong, M.L. 793 Molokai BISH 2005-08-13
58 Erigeron bonariensis Honolulu; Diamond Head At bottom of crater Preserved_Specimen Egler, F.E. 3749 Oahu BISH 1937-05-28
59 Erigeron bonariensis Kawainui Marsh, Kailua Road Site of former Kailua Nursery Preserved_Specimen Smith, L.B. 131 Oahu BISH 1976-05-24
60 Erigeron bonariensis Northwestern part of island, near landing area Preserved_Specimen Carlquist, S. 2291 Laysan Island BISH 1966-09-18
61 Erigeron bonariensis Honolulu; Manoa valley; University of Hawaii Manoa Campus In cultivated areas around Hamilton Library Preserved_Specimen Tall annual to nearly 1 m height Nagata, K.M. 1624 Oahu BISH 1978-04-07
62 Erigeron bonariensis Kahalui Forestry Nursery Preserved_Specimen Plants 2-3.5 ft. tall, more bluish green than larger Erigeron. Flowers at anthesis 7 mm long, 6 mm wide near base & narrowing to 3 mm wide at apex, in fruit forming perfectly round white globes of pappus 14 mm across; bracts green Hobdy, R.W. 1403 Maui BISH 1982-05-24
63 Erigeron bonariensis Mahana Preserved_Specimen Munro, G.C. 177 Lanai BISH 1913-10-01
64 Erigeron bonariensis Honolulu; University Campus Preserved_Specimen Forbes, A. 58 Oahu BISH 1929-09-13
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