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Erigeron sumatrensis

Retz. (1788)

This name is accepted

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

hairy horseweed, ilioha, iliohe

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Description

Key Characters:

Growth Form:

Stems:

Roots:

Leaves:

Flowers:

Fruit:

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Images

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Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Ni'ihau(Incl. Lehua) Potentially naturalizing
Kuaihelani (Midway Atoll) Potentially naturalizing
Kaua'i Naturalized
O'ahu Naturalized
Molokai Naturalized
Lana'i Naturalized
Kaho'olawe Naturalized
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents


Pollinators

Bibliography

Name Published In: Observ. Bot. 5: 28 (1788)

Other References

Faccenda & Strong 2024:173 (NEWNAT/Mi, Ni, K, O, Mo, L, M, Ka, H, KEY, E. bonariensis misapplied, in part = E. sumatrensis)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Erigeron sumatrensis Kalaheo; Papalina Road near entrance to PTBG Preserved_Specimen Herb of 4 ft. Bracts purple tipped; ray flowers pistillate, whitish-green, ca. 108; disc flowers perfect, yellowish-green, 13. Numbers of flowers counted from a single head Flynn, T.W. 3006 Kauai BISH 1988-06-15
2 Erigeron sumatrensis Upper Kula Road at junction of Kealaloa Road Preserved_Specimen Plants with long branches arising near middle of stem flowers. Hobdy, R.W. 1409 Maui BISH 1982-06-04
3 Erigeron sumatrensis Kalepa ridge Windward side of northern part of ridge. Preserved_Specimen Corn, C. Kauai BISH 1977-07-20
4 Erigeron sumatrensis Puu Hualalai; Kaupulehu Crevice of lava Preserved_Specimen St.John, H. 11420 Hawaii BISH 1931-12-30
5 Erigeron sumatrensis Hawaii Volcanoes National Park Near Volcano House Preserved_Specimen Herb about 1 ft. tall Newell, C.L. 141 Hawaii BISH 1966-07-22
6 Erigeron sumatrensis unknown Preserved_Specimen Woolford, H.A. 231 Oahu BISH 1955-12-11
7 Erigeron sumatrensis Alau. On E flank of large hill Preserved_Specimen Starr, F. 5040522 Maui BISH 2005-04-05
8 Erigeron sumatrensis Palawai Preserved_Specimen Munro, G.C. 371 Lanai BISH 1928-08-01
9 Erigeron sumatrensis Honolulu; Diamond Head, Kapiolani Park Preserved_Specimen Munro, G.C. 64 Oahu BISH 1950-04-12
10 Erigeron sumatrensis Kaholuamanoa, above Waimea Preserved_Specimen Heller, A.A. 2819 Kauai BISH 1895-09-10
11 Erigeron sumatrensis Lihue District; Wailua, Lihuekoloa Forest Reserve Along jeep road to irrigation intake dam on North Fork of Wailua River Preserved_Specimen Annual herb with white flowers, greyish-green foliage Herbst, D.R. 5549 Kauai BISH 1975-11-17
12 Erigeron sumatrensis Waimea Canyon Preserved_Specimen Huber, H.F.J. 44 Kauai BISH 1964-08-21
13 Erigeron sumatrensis Halemanu Rpad, near jct w/Kokee Rd, near Tracking Station Preserved_Specimen Plants 1.5 m tall. Wagner, W.L. 5153 Kauai BISH 1983-12-20
14 Erigeron sumatrensis Mahana Preserved_Specimen Munro, G.C. 468 Lanai BISH 1929-04-24
15 Erigeron sumatrensis Puu Laau, Mt. Kea Inside deer pen Preserved_Specimen Lamoureux, C.H. 4355 Hawaii BISH 1969-08-14
16 Erigeron sumatrensis Waianae Range; Kolekole Pass Preserved_Specimen Forbes, C.N. 2034 Oahu BISH 1912-02-01
17 Erigeron sumatrensis Trail up Waianae Kai Valley to Kamaileunu Ridge Preserved_Specimen Wagner, W.L. 5121 Oahu BISH 1983-12-11
18 Erigeron sumatrensis Kaholuamanoa, above Waimea Preserved_Specimen Heller, A.A. 2820 Kauai BISH 1895-09-10
19 Erigeron sumatrensis Ka Loko Reservoir (Kilauea) Preserved_Specimen Forbes, C.N. 574 Kauai BISH 1916-10-11
20 Erigeron sumatrensis Miki Preserved_Specimen Munro, G.C. 529 Lanai BISH 1916-03-22
21 Erigeron sumatrensis Mauna Kea, above Hale Pohaku area Preserved_Specimen Sohmer, S.H. 6231 Hawaii BISH 1970-01-01
22 Erigeron sumatrensis Honolulu; Hauula Preserved_Specimen Forbes, C.N. 2375 Oahu BISH 1916-06-01
23 Erigeron sumatrensis Haleakala National Park, Leg 10, south slope Preserved_Specimen Gagné, B.H. 3050 Maui BISH 1991-04-15
24 Erigeron sumatrensis Puu Omaokoili, near Pohakuloa Preserved_Specimen Kosaka, E. 4 Hawaii BISH 1962-04-03
25 Erigeron sumatrensis S half of island Preserved_Specimen Stokes, J.F.G. Niihau BISH 1912-01-01
26 Erigeron sumatrensis Palolo Valley Preserved_Specimen Garber, D.W. 398 Oahu BISH 1920-05-02
27 Erigeron sumatrensis Kona; Alahaka Bay to Lae Loa Pt. S of Honaunau Preserved_Specimen Bryan Jr., E.H. Hawaii BISH 1957-01-22
28 Erigeron sumatrensis Honolulu; Moanalua, R. R. track Preserved_Specimen Bryan, W.A. Oahu BISH 1903-12-13
29 Erigeron sumatrensis Waianae Mountains: Kaluaa Preserved_Specimen Cantori, M. Oahu BISH 1958-10-04
30 Erigeron sumatrensis Ohulehule Preserved_Specimen Christophersen, E. Oahu BISH 1924-11-09
31 Erigeron sumatrensis Honopu Valley Preserved_Specimen Corn, C. Kauai BISH 1984-07-17
32 Erigeron sumatrensis Mokulua islets, off Lanikai Preserved_Specimen Neal, M.C. Oahu BISH 1936-06-14
33 Erigeron sumatrensis Mauna Kea Preserved_Specimen Adee, K.T. Hawaii BISH
34 Erigeron sumatrensis Honolulu; Kamehameha School Preserved_Specimen Forbes, C.N. 1043 Oahu BISH 1909-01-18
35 Erigeron sumatrensis Near juncture of archaeological sites 104 and 150; just out of hardpan Preserved_Specimen Warren, S. 31 Kahoolawe BISH 1987-04-11
36 Erigeron sumatrensis Miki Preserved_Specimen Munro, G.C. 293 Lanai BISH 1928-02-06
37 Erigeron sumatrensis Pohakuloa Military Camp Next main drainage on Mauna Kea NW of Pohakuloa Gulch Open Myoporum-Sophora woodland with numerous exotic grasses & herbs Preserved_Specimen Wagner, W.L. 4676 Hawaii BISH 1982-11-17
38 Erigeron sumatrensis 1.4 miles from Waikoloa substation along powerline On a`a lava flow Preserved_Specimen Wagner, W.L. 4728 Hawaii BISH 1982-11-20
39 Erigeron sumatrensis Hawaii Volcanoes National Park Mongoose Trapline adjacent to Powerline road leading to Keahou Ranch Native scrub with grassland herbs Dodonaea, Styphelia, Vaccinium, Deschampsia, Holcus lanatus & Carex Preserved_Specimen Higashino, P.K. 9723 Hawaii BISH 1981-12-10
40 Erigeron sumatrensis Moanalua trail, about 1 km from where trail stops contouring the stream and ascends the ridge. On the ridge Dryish area, sunny Preserved_Specimen About 10 plants seen Faccenda, K. 2093 Oahu BISH 2021-08-21
41 Erigeron sumatrensis Kula, near foot of Haleakala Road Very abundant in large pile of crushed rock. Preserved_Specimen Herbs to 1 m. tall, heads about intermediate in size between C. canadensis and C. bonariensis. Fosberg, F.R. 55689 Maui BISH 1975-03-14
42 Erigeron sumatrensis Mauna Loa, southwest flank Ahupuaa of Kapua Open grassy area with Acacia & Metrosideros growing on the perimeter Preserved_Specimen Higashino, P.K. 6128 Hawaii BISH 1977-07-13
43 Erigeron sumatrensis Manoa Cliff Trail, Tanatalus Growing on exposed rock walls along the lower section of the main trail. Preserved_Specimen Annual herb, erect, ca. 25-30 cm tall, ca. 8-10 plants seen. Ross, M.C. 1966 Oahu BISH 2023-11-10
44 Erigeron sumatrensis Hauula Loop Trail Open wet forest Preserved_Specimen Flowers whitish; erect herb ca. 70 cm tall Allison, A. Oahu BISH 2021-01-17
45 Erigeron sumatrensis Lanai city, beginning of Keomoku Rd near the Sensei resort. Roadside, sunny, moist area. Preserved_Specimen Only one plant seen at this spot, this plant was generally uncommon across the island Faccenda, K. 3131 Lanai BISH 2023-06-19
46 Erigeron sumatrensis Keauhou Ranch, Kau district Disturbed Acacia-Metrosideros forest. Common herb along skid road on `a`a lava. Preserved_Specimen 1 to 3 ft. tall. Cuddihy, L.W. 71 Hawaii BISH 1979-12-18
47 Erigeron sumatrensis Keauhou Ranch, Kau District Along skid road, on `a`a lava, in disturbed Metrosideros - Acacia forest. Preserved_Specimen 1-3 ft. tall. Cuddihy, L.W. 68 Hawaii BISH 1979-12-18
48 Erigeron sumatrensis Kaupulehu Common weed of disturbed areas Preserved_Specimen Annual herb to about 5 ft. tall, with gray-green foliage & yellow florets Herbst, D.R. 5036 Hawaii BISH 1974-09-18
49 Erigeron sumatrensis Top of Nuuanu Pali Grassy slopes & ledges of exposed crests Preserved_Specimen Fosberg, F.R. 27082 Oahu BISH 1946-09-22
50 Erigeron sumatrensis Hawaii Volcanoes National Park Drive to end of Hilina Pali Rd., and walk about 200 meters west of rainshelter. Grassland located just west of pahoehoe lava flow & northmof large trailside Metrosideros tree (Plot 2) Andropogon glomeratus grassland community on ash-covered pahoehoe lava Preserved_Specimen Herb about 8 inches tall Newell, C.L. 286 Hawaii BISH 1966-08-03
51 Erigeron sumatrensis W Maui, Lahaina District, before enterance to Maunalei Arboretum pasture Preserved_Specimen perennial herb to 60 cm; flowers white Annable, C.R. 3813 Maui BISH 1998-02-11
52 Erigeron sumatrensis Hawaii loa ridge trail, ca .2mi from trailhead Dry, sunny, invasive dominated area Preserved_Specimen ca. 10 plants seen Faccenda, K. 2103 Oahu BISH 2021-08-29
53 Erigeron sumatrensis ahupuaa of Halepuaa in the Puna District Along the side of the dirt road that transects the ahupua`a. The plant is growing in an area exposed to direct sunlight. Preserved_Specimen Yoshida, L. Hawaii BISH 1979-02-28
54 Erigeron sumatrensis Hawaii Volcanoes National Park Drive down Chain of Craters Rd. about 15 meters towards Volacano Observatory from the short strip of road connecting Crater Rim Rd. & Kona-Hilo Hwy. Located ca. 40 meters to right of road from 35 mph sign Scattered Metrosideros-native shrub-lichen community on ash-covered pahoehoe lava Preserved_Specimen Herb about 1 ft. tall Newell, C.L. 458 Hawaii BISH 1966-08-19
55 Erigeron sumatrensis Hawaii Volcanoes National Park Drive to end of Hilina Park Road & walk about 0.7 mile down Hilina Pali Switchback Trail; at left of trail just before 1st switchback (Plot 46b) Shrub & grass community in fine ash pockets Preserved_Specimen Herb about 2 inches tall, heavily browsed by goats Newell, C.L. 775 Hawaii BISH 1966-09-03
56 Erigeron sumatrensis Waimea District. Waimea Canyon State Park. Iliau Loop Trail Disturbed Acacia koa, Dodonaea, Leptecophylla shrubland. Leptecophylla tameiameiae, Metrosideros polymorpha, Dianella sandwicensis, Acacia koa, Lantana camara, Eucalyptus sp., Dodonaea viscosa, Plantago lanceolata, Psidium cattleianum Preserved_Specimen Wolkis, D. 1154 Kauai BISH 2017-06-27
57 Erigeron sumatrensis Hawaii Volcanoes National Park Drive down Hilina Pali Rd. about 9.8 miles toward ocean from intersection with Chain of Craters Rd; 2.6 miles past Kipuka Nene. Walk about 1.5 miles WNW from the Hilina Pali Rd. to the ash dunes (Plot 60) Scattered Metrosideros-Andropogon grassland community of stationary ash dunes Preserved_Specimen Herb about 1 ft. tall Newell, C.L. 665 Hawaii BISH 1966-08-29
58 Erigeron sumatrensis Makawao District, Waiakoa Ahu, Kula Forest Reserve Tr 31(4), W slope of Haleakala; ridge NE of Naalae Gulch Dry native shrub community with scattered mixed native trees Preserved_Specimen Higashino, P.K. 9210 Maui BISH 1980-06-18
59 Erigeron sumatrensis Ridge between Waianae and Makaha, between Ka'ala and Pu'ukawiwi Open sunny area Preserved_Specimen Faccenda, K. 2111 Oahu BISH 2021-09-04
60 Erigeron sumatrensis Waimea District. North below Kawaiiki Ridge In Asplenium dielmannii exclosure. N-East facing slope above Twin Falls. Diverse Mesic A. Koa and Metrosideros forest. Psychotria, Bobea, Coprosma, Dodonea, Perrottetia, Claoxylon, Alyxia, Kadua affinis, Carex, Cheirodendron trigynum, Myrsine, Rubis hawaiiensis, Scavola, Ilex, Syzygium, Diplazium sandwichianum, Dubaut Preserved_Specimen 6ft. tall, Stem with spongy center, purple on outside near base. Smell. Upper stem and leaves w/hairs. Flower heads with cream color flowers Tangalin, N. 2843 Kauai BISH 2012-02-09
61 Erigeron sumatrensis Hawaii Volcanoes National Park Down Chain of Craters Rd. about 28.5 miles towards Kalapana from intersection with Crater Rim Rd.; or about 0.2 miles before Queens Bath. Located 0.25 mile up Royal Estates Rd., not far from HVNP boundry (Plot 27) Mixed lowland scrub community Preserved_Specimen Herb about 1 ft. tall Newell, C.L. 118 Hawaii BISH 1966-07-20
62 Erigeron sumatrensis Kahalui Industrial area In sand Preserved_Specimen Hobdy, R.W. 2087 Maui BISH 1984-05-08
63 Erigeron sumatrensis North Halawa Valley; botanical survey site 5, between bridges 5 & 6 on access road Mesa top area of site 5. Andropogon grassland. Preserved_Specimen Bush. Lennstrom, H. 19949 Oahu BISH 1994-01-03
64 Erigeron sumatrensis Mauna Loa observatory rd. from Saddle rd Growing with Oenothera, grasses and sedges. Natives nearby include Vaccinium, Carex, and Coprosma ernodeoides. Preserved_Specimen Davis, J. 590 Hawaii BISH 1981-08-22
65 Erigeron sumatrensis Waahila Ridge Trail, Koolau Mountains, Oahu, Hawaii Growing along trail in dry area. Preserved_Specimen Woody subshrub, densely packed with dull-fuzzy, lanceolate leaves, few branches. Flowers clustered at tips. Crago, L.M. 2005144 Oahu BISH 2005-05-16
66 Erigeron sumatrensis Waianae Mountains; Waianaeuka, Puu Kaala Dry meadow Preserved_Specimen Nakagawa, S. Oahu BISH 1930-11-30
67 Erigeron sumatrensis Nuuanu-Pauoa Ridge Among Setaria Preserved_Specimen Webster, G.L. 1000 Oahu BISH 1947-09-28
68 Erigeron sumatrensis NW part of Island; above Makaalae Point In area of bare soil in Prosopis scrub Preserved_Specimen Plant about 3 ft. tall, woody at base. Flowers whitish Cuddihy, L.W. 330 Kahoolawe BISH 1980-04-21
69 Erigeron sumatrensis Mauna Kea (Puu Laau Road) In open Mamane-Naio forest. Preserved_Specimen Engilis Jr., A. 12 Hawaii BISH 1987-08-19
70 Erigeron sumatrensis Palaau, on west side of Molokai airport In pineapple field, Dry, exposed, windy. Preserved_Specimen Herb with grey-green foliage. Yellow florets Herbst, D.R. 5093 Molokai BISH 1974-11-11
71 Erigeron sumatrensis Hawaii Volcanoes National Park Kau District; by Hilina Pali Rd., in Kipuka Nene shelter area Open grassy area Preserved_Specimen Herb ca. 1-2 m tall. Herat, T. 773 Hawaii BISH 1974-06-27
72 Erigeron sumatrensis East Maui, Haleakala National Park Roadside Preserved_Specimen Robust herb 2 m high Nagata, K.M. 2576 Maui BISH 1982-11-20
73 Erigeron sumatrensis Hamakua District; Pohakuloa Training Area; along the Saddle Road Collected between the 30 & 45 mile markers; within 60 ft of the road. Preserved_Specimen Funk, E.J. Hawaii BISH 1990-12-13
74 Erigeron sumatrensis Saddle between Mauna Loa & Mauna Kea Along road to Mauna Loa Observatory, less than a mile from Saddle Rd Associated with grasses, sedges, Vaccinium & Styphelia Preserved_Specimen Pappus pinkish Davis, J. 525 Hawaii BISH 1981-06-15
75 Erigeron sumatrensis Paomai District Pineapple field Preserved_Specimen Herbaceous weed to 2 m. Leaves alternate; narrow & tomentose. Involucral bracts downy Spence, G. 168 Lanai BISH 1973-07-03
76 Erigeron sumatrensis 0.4 mi SSE of Mauna Kea State Park on W side of Saddle Road Open Myoporum-Sophora woodland with numerous exotic herbaceous species & the natives Chenopodium oahuense & Dodonaea sp. Preserved_Specimen Wagner, W.L. 4697 Hawaii BISH 1982-11-18
77 Erigeron sumatrensis Rt 450, c.a. 5 km E of 'Ualapu'e Roadside weed in sunny, moist area Preserved_Specimen Common, most plants seen were seedlings but two flowering plants were seen in this spot Faccenda, K. 2946 Molokai BISH 2022-12-29
78 Erigeron sumatrensis Waianae Mountains; west side of Waianae uka Open dry region Preserved_Specimen Kitamura, F. Oahu BISH 1933-11-05
79 Erigeron sumatrensis Kalauao Valley (ewa side of Aiea Ridge trail) Back of Kalauao Valley just below the summit. On disturbed open slope below the powerline stand on Aiea Ridge Trail. Associated vegetation: Setaria parviflora, Sacciolepis, Sphenomeris, Pterolepis, Sadleria, Machaerina angustifolia, Erigeron karvinskianus. Preserved_Specimen Imada, C. 2003191 Oahu BISH 2003-11-17
80 Erigeron sumatrensis Kahana Valley Along trail starting at the old abandond Mormon church and cemetary on the Kawa side On slope of open area Preserved_Specimen Common weed about 4 ft. tall. Leaves when crushed have strong odor Herat, T. 187 Oahu BISH 1972-08-18
81 Erigeron sumatrensis Hawaii Volcanoes National Park Drive down Chain of Craters Rd. about 11.9 miles towards Kalapana from intersection with Crater Rim Rd.; or about 1 mile before Naulu Picnic area road. Located uphill from a paved pulloff (Plot 6) Metrosideros-native shrub-Andropogon savanna community Preserved_Specimen Herb about 1 ft. tall Newell, C.L. 833 Hawaii BISH 1966-01-23
82 Erigeron sumatrensis At end of Waihee Valley Road (merges with Wailuku Sugar rd.) On banks of fallowing cane field. Associated with Cyperus, Panicum. Preserved_Specimen Weed to 5 ft. Ishikawa, S. 322 Maui BISH 1973-11-29
83 Erigeron sumatrensis Pohakuloa Training Area, base of Puu Keekee, firing pt 507 (DMC 2-227/21-906) Disturbed dry grassland on sandy cinder soil. Associated w/ Eragrostis, Bromus. Preserved_Specimen Naturalized (S America) Douglas, P. 3182 Hawaii BISH 1989-01-18
84 Erigeron sumatrensis Kahuku, Kamehameha Highway roadside Preserved_Specimen Herb, more or less densely covered with white felt. Leaves, alternate, narrow, entire. Flower heads are grouped above in wide or narrow clusters, each head having tubular florets only and pappus of fine hairs Tiu, C. 55 Oahu BISH 1975-02-08
85 Erigeron sumatrensis Hardpan area near LZ-1; southwest portion of archaeological area # 150 Associated with predominant bluestem grass. Preserved_Specimen Warren, S. 1 Kahoolawe BISH 1987-04-08
86 Erigeron sumatrensis East Maui, Science City, at 3 widely scattered sites at Haleakala Observatories. Sparse subalpine rockland with Leptecophylla tameiameiae, Dubautia menziesii, Pellaea ternifolia. Found in road cracks and other disturbed sites. Preserved_Specimen Naturalized. Three plants seen and pulled. Starr, F. 17050502 Maui BISH 2017-05-05
87 Erigeron sumatrensis Waiapaa Gulch, SE of Lanai City, leeward side of Lanaihale, west-facing slope Herb on steep, dry, eroded slopes, growing with Hyparrhenia hirta, Melinis minutiflora, Waltheria. Preserved_Specimen Flowerw white. Imada, C. 200248 Lanai BISH 2002-08-13
88 Erigeron sumatrensis 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
89 Erigeron sumatrensis P.T.B.G., Lawai Valley Preserved_Specimen Herb with white florets Herbst, D.R. 2280 Kauai BISH 1971-12-30
90 Erigeron sumatrensis Puuwaawaa Rangeland paddock Preserved_Specimen Takeuchi, W.N. 5750 Hawaii BISH 1989-05-01
91 Erigeron sumatrensis Waipio, along road in abandoned pineapple field Preserved_Specimen Erect herb about 4 ft. tall, white florets Herbst, D.R. 747 Oahu BISH 1967-11-27
92 Erigeron sumatrensis Kuli'ou'ou West Ridge, along trail Preserved_Specimen Uncommon along trail Faccenda, K. 2124 Oahu BISH 2021-10-02
93 Erigeron sumatrensis Halemanu Road Near junction with Kokee Road near Tracking Station Preserved_Specimen Plants 1.5 m tall Wagner, W.L. 5126 Kauai BISH 1983-12-20
94 Erigeron sumatrensis Miki Preserved_Specimen Munro, G.C. 410 Lanai BISH 1916-03-22
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