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Chromolaena odorata

(L.) R.M.King & H.Rob. (1970)

This name is accepted

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

devil weed, siam weed

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Description

Key Characters:

Growth Form:

Stems:

Roots: Roots fibrous.

Leaves: Leaves simple. Opposite or rarely alternate. Blades deltate, lanceolate, or ovate, triangular Apex acute. Base decurent (extending down the petiole), obtuse, or truncate. Margins crenate, serrate/dentate, or rarely entire.

Flowers:

Fruit:

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Images

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Synonyms (42)

Chromolaena barranquillensis (Hieron.) R.M.King & H.Rob. (1970)
Chromolaena clematitis (DC.) Pruski (2009)
Chromolaena odorata f. squarrosa (Koster f.) Sunita Garg (1990)
Chrysocoma volubilis Vell. (1829)
Eupatorium atriplicifolium Vahl (1794)
Eupatorium barranquillense Hieron. (1901)
Eupatorium brachiatum Sw. ex Wikstr. (1827)
Eupatorium clematitis DC. (1836)
Eupatorium conyzoides Vahl (1794)
Eupatorium conyzoides f. angustiflorum Cuatrec. (1935)
Eupatorium conyzoides f. glabratum Hassl. (1916)
Eupatorium conyzoides var. extensum Hieron. (1897)
Eupatorium conyzoides var. floribundum (Kunth) Hieron. (1897)
Eupatorium conyzoides var. glabrescens Steetz (1854)
Eupatorium conyzoides var. heterolepis Griseb. (1861)
Eupatorium conyzoides var. incanum Baker (1876)
Eupatorium conyzoides var. maximiliani Baker (1876)
Eupatorium conyzoides var. pauciflorum Baker (1876)
Eupatorium conyzoides var. phyllocephalum Sch.Bip. ex Baker (1876)
Eupatorium conyzoides var. scaberulum Hassl. (1916)
Eupatorium conyzoides var. tambillense Hieron. (1905)
Eupatorium divergens Less. (1830)
Eupatorium floribundum Kunth (1818)
Eupatorium graciliflorum DC. (1836)
Eupatorium incisum A.Rich. (1792)
Eupatorium klattii Millsp. (1900)
Eupatorium odoratum L. (1759)
Eupatorium odoratum f. scandens Kuntze (1891)
Eupatorium odoratum f. squarrosum Koster f. (1952)
Eupatorium odoratum var. brachiatum (Sw. ex Wikstr.) DC. (1836)
Eupatorium odoratum var. cubense DC. (1836)
Eupatorium odoratum var. mallotophyllum B.L.Rob. (1926)
Eupatorium odoratum var. pauciflorum (Baker) Hieron. (1901)
Eupatorium sabeanum Buckley (1862)
Eupatorium stigmatosum Meyen & Walp. (1843)
Osmia atriplicifolia Sch.Bip. (1866)
Osmia clematitis (DC.) Sch.Bip. (1866)
Osmia conyzoides Small (1903)
Osmia divergens (Less.) Sch.Bip. (1866)
Osmia floribunda (Kunth) Sch.Bip. (1866)
Osmia graciliflora (DC.) Sch.Bip. (1866)
Osmia odorata (L.) Sch.Bip. (1866)

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

O'ahu Naturalized
Hawai'i Naturalized

Dispersal Agents

Wind
Other Animals

Vegetative Reproduction

Pollinators

Bibliography

Name Published In: Phytologia 20: 204 (1970)

Other References

Frohlich & Lau 2012:30 (NEWNAT/O, DESCR); Frohlich & Lau 2014:8 (O, RANGE EXT [spreading but localized across north and central O]); Parker et al. 2024:135 (H)

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Chromolaena odorata (L.) R.M.King & H.Rob. Off of Aiea loop trail. Dry to mesic secondary forest. PRESERVED_SPECIMEN N. Dube 2015020501 Oahu PTBG 2/5/2015
2 Chromolaena odorata (L.) R.M.King & H.Rob. Kahuku Training Area off Bravo road, near Opana radar tracking station Dry to mesic lowland flattened ridge top, secondary forest growing among Schinus terebinthifolius. PRESERVED_SPECIMEN Pali, H. USARMY 199 Oahu BISH 1/11/2011
3 Chromolaena odorata (L.) R.M.King & H.Rob. Waianae Mts., Kaala Road, near culvert 16. Associated canopy: Eucalyptus spp., Psidium cattleyanum. Understory: Mesosphaerum pectinatum, Psidium cattleyanum. PRESERVED_SPECIMEN Tamayo, C. USARMY 501 Oahu BISH 10/24/2018
4 Chromolaena odorata (L.) R.M.King & H.Rob. Lanikai, Kuailima beach access, closer to the beach end. Growing out of a naupaka bush. Sand substrate. PRESERVED_SPECIMEN Hawkins, J. USARMY 451 Oahu BISH 9/10/2016
5 Chromolaena odorata (L.) R.M.King & H.Rob. Waianae Mts., Makaha Valley. Non-native dry to mesic forest; 90% non-native (Schinus terebinthifolius, Psidium cattleianum, Syzygium cumini, Toona ciliata), 10% native (Diospyros sandwicensis, Metrosideros polymorpha, Psydrax odorata, Dodonaea viscosa). PRESERVED_SPECIMEN Roman, P. s.n. Oahu BISH 10/16/2018
6 Chromolaena odorata (L.) R.M.King & H.Rob. schofield barrack east range, lower section just s of wahiawa neighboorhood. utm 603197, 2376937. Open, dry to mesic disturbed military training area. Growing with Waltheria indica, Clidemia hirta, Andropogon virginicus, Dicranopteris linearis. PRESERVED_SPECIMEN marsh, t. collector number: us army 355 Oahu BISH
7 Chromolaena odorata (L.) R.M.King & H.Rob. schofield barracks, in lower mohiakea gulch, along area x and mccarthy flat access road. PRESERVED_SPECIMEN us army gustine-lee, j.; kawelo, k.; beachy, j. collector number: usarmy 312 Oahu BISH 5/25/2013
8 Chromolaena odorata (L.) R.M.King & H.Rob. Off of ?ÇÿAiea loop trail. Approximate UTM: 614244, 2366230. Dry to mesic secondary forest. PRESERVED_SPECIMEN N. Dube OISC Collector Number: 2015020501 Oahu BISH
9 Chromolaena odorata (L.) R.M.King & H.Rob. Schofield Barracks, in Lower Mohiakea gulch, along Area X and McCarthy Flat Access road. Fairly open Casuarina sp., Schefflera actinophylla, Spathodea campanulata, Melia azederach, Grevillea robusta, Acacia confusa canopy, Urochloa maxima dominated understory. PRESERVED_SPECIMEN Gustine-Lee, J. USARMY 312 Oahu BISH 5/25/2013
10 Chromolaena odorata (L.) R.M.King & H.Rob. off of ‘aiea loop trail. approximate utm: 614244, 2366230. PRESERVED_SPECIMEN n. dube oisc collector number: 2015020501 Oahu BISH
11 Chromolaena odorata (L.) R.M.King & H.Rob. kahuku training area off bravo road, near opana radar tracking station Dry to mesic lowland flattened ridge top, secondary forest growing among Schinus terebinthifolius. PRESERVED_SPECIMEN pali, h. pali, h.; heintzman, s.; tanino, j. collector number: usarmy 199 Oahu BISH 1/11/2011
12 Chromolaena odorata (L.) R.M.King & H.Rob. Off of ‘Aiea loop trail. Approximate UTM: 614244, 2366230. Dry to mesic secondary forest. PRESERVED_SPECIMEN Dube, N. 2015020501 Oahu BISH 2/5/2015
13 Chromolaena odorata (L.) R.M.King & H.Rob. Schofield Barrack East Range, lower section just S of Wahiawa neighboorhood. UTM 603197, 2376937. Open, dry to mesic disturbed military training area. Growing with Waltheria indica, Clidemia hirta, Andropogon virginicus, Dicranopteris linearis. PRESERVED_SPECIMEN Marsh, T. Collector Number: US Army 355 Oahu BISH
14 Chromolaena odorata (L.) R.M.King & H.Rob. schofield barracks, in lower mohaiakea gulch, along area x and mccarthy flat access road PRESERVED_SPECIMEN j. gustine, k. kawelo & j. beachy usarmy 312 NY 5/25/2013
15 Chromolaena odorata (L.) R.M.King & H.Rob. Kahuku Training Area off Bravo road, near Opana radar tracking station Dry to mesic lowland flattened ridge top, secondary forest growing among Schinus terebinthifolius. PRESERVED_SPECIMEN Pali, H. Pali, H.; Heintzman, S.; Tanino, J. Collector Number: USARMY 199 Oahu BISH 1/11/2011
16 Chromolaena odorata (L.) R.M.King & H.Rob. Schofield Barrack East Range, lower section just S of Wahiawa neighboorhood. UTM 603197, 2376937. Open, dry to mesic disturbed military training area. Growing with Waltheria indica, Clidemia hirta, Andropogon virginicus, Dicranopteris linearis. PRESERVED_SPECIMEN Marsh, T. USARMY 355 Oahu BISH 10/23/2014
17 Chromolaena odorata (L.) R.M.King & H.Rob. Kahuku Training Area off Bravo Road, near Opana radar tracking station. Dry to mesic lowland flattened ridge top with secondary forest. PRESERVED_SPECIMEN H. Pali USArmy 199 Oahu PTBG 1/11/2011
18 Chromolaena odorata (L.) R.M.King & H.Rob. Schofield Barracks, in Lower Mohaiakea Gulch, along Area X and McCarthy Flat Access road PRESERVED_SPECIMEN Gustine, J.; Kawelo, K.; Beachy, J. USARMY 312 Oahu US 5/25/2013
19 Chromolaena odorata (L.) R.M.King & H.Rob. Schofield Barracks, in lower Mohiakea gulch, along Area X and McCarthy Flat Access road. Fairly open secondary forest. PRESERVED_SPECIMEN US Army USArmy 312 Oahu PTBG 5/25/2013
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