Hawaiian Ecosystems at Risk project (HEAR)

Ageratina riparia
(Asteraceae)

creeping croftonweed, mist flower, river eupatorium, spreading mistflower

image of Ageratina riparia image of Ageratina riparia image of Ageratina riparia
MORE IMAGES
HEAR home  >  species info  >  plants  >  Ageratina riparia (Asteraceae)
(hints)
Species description or overview Taxonomy & nomenclature Impacts Control methods Biocontrol efforts Images
Distribution Books Full-text articles Experts Other resources  

Let us know if you have suggestions for additional references to add to this page.

Ageratina riparia, also known as mist flower or Hamakua pamakani, is a spreading subshrub with clusters of small white flowers, pointed to elliptic leaves, and branches up to 3 feet long.  After its introduction to Hawaii, Ageratina riparia eventually infested thousands of acres of ranchland.  Ageratina riparia was accidentally introduced to Hawaii in 1925. 


Species description or overview

Ageratina riparia information from PIER
Information on Ageratina riparia as relevant to Pacific Islands is provided by the Pacific Island Ecosystems at Risk project (PIER).

Ageratina riparia description and ecology from GISD (ISSG)
A species description and information about the ecology of Ageratina riparia as an invasive species is provided from the Global Invasive Species Database (GISD). GISD was created and is maintained by IUCN's Invasive Species Specialist Group (ISSG).


Taxonomy & nomenclature

GRIN nomenclature info for Ageratina riparia
Nomenclatural information about Ageratina riparia is provided by USDA/ARS/NGRP/GRIN.

Ageratina riparia information from the Smithsonian's Flora of the Hawaiian Islands
Information about Ageratina riparia--including nomenclature and synonymy, and status and distribution in Hawaii--is provided by the "Flora of the Hawaiian Islands" website of the Smithsonian National Museum of Natural History. Links from this page include descriptive information about the species, as well as worldwide distributional information and general information about the genus.

Ageratina riparia information from ITIS
The Integrated Taxonomic Information System ITIS provides authoritative taxonomic information on Ageratina riparia, as well as other plants, animals, fungi, and microbes of North America and the world.

IPNI nomenclature info for Ageratina riparia
Nomenclatural information about Ageratina riparia is provided by The International Plant Names Index (IPNI).


Impacts

Ageratina riparia (Asteraceae): species information from GCW
Information on Ageratina riparia as relevant to Pacific Islands is provided by the Global Compendium of Weeds (GCW).

Ageratina riparia impact information from GISD (ISSG)
Impact information regarding Ageratina riparia as an invasive species is provided from the Global Invasive Species Database (GISD). GISD was created and is maintained by IUCN's Invasive Species Specialist Group (ISSG).


Control methods

Ageratina riparia management information from GISD (ISSG)
Management information for Ageratina riparia as an invasive species is provided from the Global Invasive Species Database (GISD). GISD was created and is maintained by IUCN's Invasive Species Specialist Group (ISSG).

Herbicidal weed control methods for pastures and natural areas of Hawaii View info about Adobe Acrobat PDF format
This comprehensive review of herbicide application methods includes calculations for formulations, and appendices listing herbicides registered for use in Hawaii and their toxicities (University of Hawaii, 2002).


Biocontrol efforts

Ageratina riparia information (biocontrol in Hawaii) from HEAR.org
Information about Ageratina riparia as it is relevant to biocontrol (biological control) efforts in Hawaii is provided by the Hawaiian Ecosystems at Risk project (HEAR).

Biological control of lantana, prickly pear, and Hamakua pamakani in Hawaii: A review and update  View info about Adobe Acrobat PDF format
Biological control efforts against three noxious weeds in Hawaii are reviewed (from Alien Plant Invasions in Native Ecosystems of Hawaii: Management and Research, 1992, 21 pp).

Plant Pathogens as Biocontrol Agents in Native Hawaiian Ecosystems View info about Adobe Acrobat PDF format
The searchable full text of the article "Plant Pathogens as Biocontrol Agents in Native Hawaiian Ecosystems" is available online (from the book Alien Plants in Native Ecosystems of Hawaii) in PDF format.


Images

Images of Ageratina riparia (Asteraceae) (Hamakua pamakani, spreading mist flower)
Links to high-resolution free images of Ageratina riparia (Asteraceae) (Hamakua pamakani, spreading mist flower) by Forest & Kim Starr (USGS) are available here.

Ageratina riparia information from the Smithsonian Flora of the Hawaiian Islands
Information about Ageratina riparia in Hawaii is available from the Smithsonian Flora of the Hawaiian Islands.

Ageratina riparia images from PIER
Images of Ageratina riparia provided by the Pacific Island Ecosystems at Risk project (PIER).


Distribution

Ageratina riparia information from the Smithsonian Flora of the Hawaiian Islands
Information about Ageratina riparia in Hawaii is available from the Smithsonian Flora of the Hawaiian Islands.

Ageratina riparia information from the Smithsonian's Flora of the Hawaiian Islands
Information about Ageratina riparia--including nomenclature and synonymy, and status and distribution in Hawaii--is provided by the "Flora of the Hawaiian Islands" website of the Smithsonian National Museum of Natural History. Links from this page include descriptive information about the species, as well as worldwide distributional information and general information about the genus.

Ageratina riparia worldwide distribution from GISD (ISSG)
Worldwide distribution information about Ageratina riparia is provided from the Global Invasive Species Database (GISD). GISD was created and is maintained by IUCN's Invasive Species Specialist Group (ISSG).


Books

Turning the tide: The eradication of invasive species (proceedings of the International Conference on Eradication of Island Invasives)
Veitch, C.R. and M.N. Clout (eds.) . 2002. Turning the tide: The eradication of invasive species (proceedings of the International Conference on Eradication of Island Invasives). IUCN SSC Invasive Species Specialist Group. IUCN, Gland, Switzerland and Cambridge, UK. vii + 414pp. ISBN: 2-8317-0682-3.


Full-text articles

Alien plant invasions in native ecosystems of Hawaii: Management and research
Stone, Charles P., Clifford W. Smith, and J. Timothy Tunison (eds.) . 1992. Alien plant invasions in native ecosystems of Hawaii: Management and research. Honolulu: University of Hawaii Cooperative National Park Resources Studies Unit. ISBN: 0-8248-1474-6.

Turning the tide: The eradication of invasive species (proceedings of the International Conference on Eradication of Island Invasives)
Veitch, C.R. and M.N. Clout (eds.) . 2002. Turning the tide: The eradication of invasive species (proceedings of the International Conference on Eradication of Island Invasives). IUCN SSC Invasive Species Specialist Group. IUCN, Gland, Switzerland and Cambridge, UK. vii + 414pp. ISBN: 2-8317-0682-3.

Phenology, reproductive potential, seed dispersal and predation, and seedling establishment of three invasive plant species in a Hawaiian rain forest
Medeiros, A.C. 2004. Phenology, reproductive potential, seed dispersal and predation, and seedling establishment of three invasive plant species in a Hawaiian rain forest. Ph.D. Dissertation, Department of Zoology, University of Hawaii at Manoa, Honolulu.

Proceedings of workshop on biological control of native ecosystems in Hawaii
Smith, Clifford W., Julie Denslow, and Stephen Hight (eds.) . 2002. Proceedings of workshop on biological control of native ecosystems in Hawaii. Pacific Cooperative Studies Unit (University of Hawaii at Manoa, Department of Botany) Technical Report 129. 122 pages.

Setting priorities for the biological control of weeds: what to do and how to do it
Myers, Judith H. and Jessica Ware. 2002. Setting priorities for the biological control of weeds: what to do and how to do it. pp. 62-74 in Smith, Clifford W., Julie Denslow, and Stephen Hight (eds). 2002. Proceedings of workshop on biological control of native ecosystems in Hawaii. Pacific Cooperative Studies Unit (University of Hawaii at Manoa, Department of Botany) Technical Report 129. 122 pages. from http://www.botany.hawaii.edu/faculty/duffy/techr/129.pdf accessed 16 March 2008.

Biological control of invasive plants in native Hawaiian ecosystems (synthesis and conclusions)
Smith, Clifford W., Julie Denslow, and Stephen Hight. 2002. Biological control of invasive plants in native Hawaiian ecosystems (synthesis and conclusions). pp. 117-122 in 2002. Smith, Clifford W., Julie Denslow, and Stephen Hight. pp. 117-122 in Smith, Clifford W., Julie Denslow, and Stephen Hight (eds). 2002. Proceedings of workshop on biological control of native ecosystems in Hawaii. Pacific Cooperative Studies Unit (University of Hawaii at Manoa, Department of Botany) Technical Report 129. 122 pages. from http://www.botany.hawaii.edu/faculty/duffy/techr/129.pdf accessed 16 March 2008.


Experts

Ageratina riparia contacts from GISD (ISSG)
Contact information for experts on Ageratina riparia as an invasive species is provided from the Global Invasive Species Database (GISD). GISD was created and is maintained by IUCN's Invasive Species Specialist Group (ISSG).


Other resources

Phenology, reproductive potential, seed dispersal and predation, and seedling establishment of three invasive plant species in a Hawaiian rain forest
After rain forest of Haleakala National Park was fenced in the late 1980s, native vegetation responded vigorously yet three problematic plant invaders (Clidemia hirta, Hedychium gardnerianum, and Psidium cattleianum) continued to spread unabated and became of great concern to Park managers. This contribution provides a quantitative assessment of crucial life history junctures (quantitative phenology, reproductive potential, seed dispersal, seed predation, seedling establishment) to assist Haleakala NP and other managers of Hawaiian rain forests. It also provides detailed information for potentially identifying key characteristics in prevention, rapid response, and prioritization of incoming invasive species. (This document is the 2004 Ph.D. dissertation of Dr. Arthur C. Medeiros for the Department of Zoology at the University of Hawaii.)

Ageratina riparia references from GISD (ISSG)
References regarding Ageratina riparia as an invasive species is provided from the Global Invasive Species Database (GISD). GISD was created and is maintained by IUCN's Invasive Species Specialist Group (ISSG).


PDF icon Some documents posted on the HEAR website are in Adobe Acrobat PDF format. If your computer is not already set up to read these files, you can download the FREE Adobe Acrobat reader. You can set up most web browsers to automatically invoke this reader (as a "helper application" or "add-in") upon encountering documents of this type (refer to your browser's documentation for how to do this). download Acrobat reader


The Hawaiian Ecosystems at Risk (HEAR) project was historically funded by the Pacific Basin Information Node (PBIN) of the National Biological Information Infrastructure (NBII) through PIERC (USGS) with support from HCSU (UH Hilo). More details are available online. Pacific Basin Information Node (PBIN) National Biological Information Infrastructure (NBII)

species lists  ]    [  plants  ]    [  HEAR home  ]

Comments?  Questions?  Send e-mail to: webmaster@hear.org

The content of this page is based on information last generated on 07 August 2017 by PT. The template for this page was created on 15 March 2004 by EMS, and was last updated on 20 February 2006 by PT. Valid HTML 4.01!