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Crassocephalum crepidioides

(Benth.) S.Moore (1912)

This name is accepted

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

redflower ragweed

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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

Kaua'i Naturalized
O'ahu Naturalized
Molokai Naturalized
Lana'i Naturalized
Kaho'olawe Potentially Naturalizing
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents


Pollinators

Bibliography

Name Published In: J. Bot. 50: 211 (1912)

Other References

Wagner et al. 1990:291 (K, O, Mo, M, H); Nagata 1995:11 (L); Starr & Starr 2011:24 (Ka); Wagner et al. 2012:10 (Ka record adventive)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Crassocephalum crepidioides Waimea District. North below Kwaiiki Ridge in Asplenium dielmannii exclosure. N-East facing slope above Twin Falls Diverse Mesic A.koa and Metrosideros foret. Psychotria, Bobea, Coprosma, Dodonea, Perrottetia, Claoxylon, Alyxia, Kadua affinis, Carex, Cheirodendron trigynum, Myrsine, Rubus hawaiiensis, Scavola, Ilex, Syzygium, Diplazium sandwhicianum, Dubaut Preserved_Specimen 4 ft. tall. Green calyx. White filament, orange-red anther. Flws becoming white puffs. Lvs green w/ purple in upper petiole, blade dk green w/ hairs, thin. Stems Ridged Tangalin, N. 2844 Kauai BISH 2012-02-09
2 Crassocephalum crepidioides Puu Moiwi bypass road Pili/Eragrostis bale planters; Dodonaea viscosa, Asclepias, Chenopodium oahuense Preserved_Specimen Starr, F. 8020803 Kahoolawe BISH 2008-02-08
3 Crassocephalum crepidioides Lyon Arboretum Growing with Erechtites in Upper Lawn Mauka. Preserved_Specimen Herb, erect, to 4' ht. Capitula large. Florets orange. Nagata, K.M. 1654 Oahu BISH 1978-06-22
4 Crassocephalum crepidioides Windward Oahu Along Maunawili Road, near the children's playground Growing as a roadside weed in an area formerly sprayed with herbicide. Preserved_Specimen Erect plants to 1.2 m tall. Branches erect. Young flowers nodding, becoming erect. Hobdy, R.W. 1771 Oahu BISH 1983-06-19
5 Crassocephalum crepidioides wet depression along Anini Beach Road, Kalihi Kai, Kauai A wet lush area in which a wide variety of adventive species are found. Preserved_Specimen Funk, E.J. 703 Kauai BISH 1990-05-03
6 Crassocephalum crepidioides Waianae Mts., Mokuleia Forest Reserve, Pahole Gulch, 1st eastern subgulch Along moist stream bed in mixed mesophytic forest with Pisonia, Hedyotis, Gouldia, Psychotria, Charpentiera, Morinda, and Hibiscus. Preserved_Specimen Wagner, W.L. 5346 Oahu BISH 1984-04-08
7 Crassocephalum crepidioides Lanai City, N end of Abandoned pineapple field with mixed Tricachne, Erigeron, Panicum maximum, Momordica association. Uncommon. Preserved_Specimen Nagata, K.M. 4011 Lanai BISH 1989-09-08
8 Crassocephalum crepidioides Kokee: Camp 10 Road; Garden at Plew's residence Appears to be uncommon in wild and to need disturbed or bare v Preserved_Specimen Composite Weed Plews, J.H.R. Kauai BISH 1986-10-23
9 Crassocephalum crepidioides Kokee: Camp 10 Road; Garden at Plew's residence Appears to be uncommon in wild and to need disturbed or bare v Preserved_Specimen Composite Weed Plews, J.H.R. Kauai BISH 1986-10-23
10 Crassocephalum crepidioides Keanae Dist. Keanae Arboretum Growing along the access road. Preserved_Specimen Weed. Hobdy, R.W. 1921 Maui BISH 1984-01-26
11 Crassocephalum crepidioides East Maui, Hana District, Kalahu Point, PTBG Kahanu Garden Disturbed area between Pandanus forest and lawn area around Pi`ilanihale Heiau. Preserved_Specimen Common herb of 2 ft. Flower heads dirty orange, pendant. Flynn, T.W. 2433 Maui BISH 1987-10-15
12 Crassocephalum crepidioides Waianae Mts Occasional, at head of Mauna Kapu-Palikea trail along ridge crest near Mauna Kapu. Preserved_Specimen Nagata, K.M. 2067 Oahu BISH 1980-07-10
13 Crassocephalum crepidioides East Maui, Pua o Entabeni, HC 1 370 Hana Hwy, Haiku Preserved_Specimen Annual to 1.5m; flowers orange. Annable, C.R. 3162 Maui BISH 1996-11-23
14 Crassocephalum crepidioides North end of Lanai City OBSERVATION Curtis Daehler Lanai HAPI 3/21/2007
15 Crassocephalum crepidioides Pahole Gulch near road Preserved_Specimen ca. 1 m tall. Stemmermann, R.L. 1153 Oahu BISH 1976-08-08
16 Crassocephalum crepidioides Residence of Bert Kimura. Makalu Loop, Mililani, Ewa District. Preserved_Specimen Upright annual to 50 cm ht. 3 plants seen. Nagata, K.M. 1830 Oahu BISH 1979-03-05
17 Crassocephalum crepidioides Kalalau Trail, in between trail head and Hanakapiai Valley. Preserved_Specimen Plant about 2' tall. Flowers orange. Fairly common. Davis, J. Kauai BISH 1984-07-20
18 Crassocephalum crepidioides Spreckelsville Rare, along cane haul roads. Preserved_Specimen Nagata, K.M. 4455 Maui BISH 1997-05-14
19 Crassocephalum crepidioides Lyon Arboretum Flowering in pots in nursery area. All destroyed. Preserved_Specimen Plants densely hispid. Florets dark red to dark red-orange. Nagata, K.M. 2019 Oahu BISH 1980-01-07
20 Crassocephalum crepidioides Pupukea Semi Rain Forest Tropics & Subtropics Preserved_Specimen White flowers, herb 2 to 3 feet. Aggressive weed. Smith, M. 14 Oahu BISH 1986-01-21
21 Crassocephalum crepidioides Kaalaea, Koolaupoko, Oahu. Not far from Kahaluu Growing with grasses & Stachytarpheta in sunny areas along secondary road. Rare. Preserved_Specimen Annual to 2 1/2' ht. Caitula red-orange. Nagata, K.M. 1793 Oahu BISH 1978-09-26
22 Crassocephalum crepidioides Kipapa Trail, ~1/2 mi from boundary, S side of trail disturbed wet lowland forest; Metrosideros, Acacia, Dicranopteris Preserved_Specimen medium herb; flower corolla salmon; fruit achenes, reddish brown Reynolds, L.S. 105 Oahu BISH 2006-06-01
23 Crassocephalum crepidioides Limahuli Garden, 0.4 mi from end of Hwy. 56 Preserved_Specimen Wagner, W.L. 5155 Kauai BISH 1983-12-21
24 Crassocephalum crepidioides Jeep road to Kanaele Swamp (Wahiawa Bog) Between bog & Alexander Reservoir Preserved_Specimen Wagner, W.L. 5189 Kauai BISH 1983-12-22
25 Crassocephalum crepidioides grounds of Pacific Tropical Botanical Garden Preserved_Specimen Wagner, W.L. 5137 Kauai BISH 1983-12-20
26 Crassocephalum crepidioides Limahuli Garden, 0.4 mi from end of Hwy. 56 Preserved_Specimen Wagner, W.L. 5155 Kauai BISH 1983-12-21
27 Crassocephalum crepidioides Kaupulehu; Diospyros forest on transect T12 Common herb on a`a substrate. Preserved_Specimen Takeuchi, W.N. 5798 Hawaii BISH 1989-05-20
28 Crassocephalum crepidioides BYU-HC Farm Field 10 Grassland, Woodland. Western Hemisphere Preserved_Specimen Annual 2 to 6' High Glabrous or nearly so. Flowers - Greenish. Tupou, L. 10 Oahu BISH 1980-12-01
29 Crassocephalum crepidioides Wahiawa Growing alongside dirt road in pineapple fields behind the Dole Pineapple Pavilion. Preserved_Specimen Imada, C. 190 Oahu BISH 1986-02-06
30 Crassocephalum crepidioides Kaupulehu; Diopyros forest on transect T12 common herb on a`a substrate. Preserved_Specimen Takeuchi, W.N. 5798 Hawaii BISH 1989-05-20
31 Crassocephalum crepidioides Along Kamehameha Hwy. on-ramp to Kam. Hwy. S near Wheeler AFB, S of Wahiawa City Along Kam. Hwy. Preserved_Specimen Herb to 24 ht. Nagata, K.M. 1810 Oahu BISH 1978-10-26
32 Crassocephalum crepidioides Makaleha Valley, Mokuleia, Waialua District Along Kaala Road. Common in pastures of Kaala Ranch, locally common along the road above the pasture. Preserved_Specimen Nagata, K.M. 2057 Oahu BISH 1980-04-12
33 Crassocephalum crepidioides Along Kaumualii Hwy. between Puhi and Kalaheo Growing with Brachiaria mutica and Leucaena leucocephala in sunny areas. Preserved_Specimen Ht. to 4'. Nagata, K.M. 1963 Kauai BISH 1979-06-20
34 Crassocephalum crepidioides Kalaupapa, top of trail restoration site in area near cultural sign mixed mesic forest; Metrosideros polymorpha, Leptecophylla tameiameiae, Wikstroemia oahuensis, Carex wahuensis, Nephrolepis cordifolia Preserved_Specimen annual herb to 2 m tall; inflorescense reddish orange Wysong, M.L. 875 Molokai BISH 2006-02-03
35 Crassocephalum crepidioides Puuwaawaa Near water catchment basin adjacent to Wildlife Sanctuary. Uncommon. Preserved_Specimen Nagata, K.M. 4210 Hawaii BISH 1991-07-08
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