Hibiscus trionum - L.
Flower-of-an-Hour
Other English Common Names: Venice Mallow
Taxonomic Status: Accepted
Related ITIS Name(s): Hibiscus trionum L. (TSN 21639)
Unique Identifier: ELEMENT_GLOBAL.2.132403
Element Code: PDMAL0H150
Informal Taxonomy: Plants, Vascular - Flowering Plants - Mallow Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Malvales Malvaceae Hibiscus
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Concept Reference
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Concept Reference: Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Hibiscus trionum
Conservation Status
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NatureServe Status

Global Status: GNR
Global Status Last Changed: 22Mar1994
Rounded Global Status: GNR - Not Yet Ranked
Nation: United States
National Status: NNA
Nation: Canada
National Status: NNA (12Oct2016)

U.S. & Canada State/Province Status
United States Arizona (SNA), Arkansas (SNA), California (SNA), Colorado (SNA), Connecticut (SNA), Delaware (SNA), District of Columbia (SNA), Florida (SNA), Georgia (SNR), Idaho (SNA), Illinois (SNA), Indiana (SNA), Iowa (SNA), Kansas (SNA), Kentucky (SNA), Louisiana (SNA), Maine (SNA), Maryland (SNA), Massachusetts (SNR), Michigan (SNA), Minnesota (SNA), Mississippi (SNA), Missouri (SNA), Montana (SNA), Nebraska (SNA), New Hampshire (SNA), New Jersey (SNA), New Mexico (SNA), New York (SNA), North Carolina (SNA), North Dakota (SNA), Ohio (SNA), Oklahoma (SNA), Oregon (SNA), Pennsylvania (SNA), Rhode Island (SNA), South Carolina (SNA), South Dakota (SNA), Tennessee (SNA), Texas (SNA), Utah (SNA), Vermont (SNA), Virginia (SNA), Washington (SNA), West Virginia (SNA), Wisconsin (SNA), Wyoming (SNA)
Canada Manitoba (SNA), New Brunswick (SNA), Nova Scotia (SNA), Ontario (SNA), Prince Edward Island (SNA), Quebec (SNA), Saskatchewan (SNA)

Other Statuses

NatureServe Global Conservation Status Factors

Other NatureServe Conservation Status Information

Distribution
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U.S. States and Canadian Provinces
Color legend for Distribution Map
NOTE: The distribution shown may be incomplete, particularly for some rapidly spreading exotic species.

U.S. & Canada State/Province Distribution
United States ARexotic, AZexotic, CAexotic, COexotic, CTexotic, DCexotic, DEexotic, FLexotic, GA, IAexotic, IDexotic, ILexotic, INexotic, KSexotic, KYexotic, LAexotic, MA, MDexotic, MEexotic, MIexotic, MNexotic, MOexotic, MSexotic, MTexotic, NCexotic, NDexotic, NEexotic, NHexotic, NJexotic, NMexotic, NYexotic, OHexotic, OKexotic, ORexotic, PAexotic, RIexotic, SCexotic, SDexotic, TNexotic, TXexotic, UTexotic, VAexotic, VTexotic, WAexotic, WIexotic, WVexotic, WYexotic
Canada MBexotic, NBexotic, NSexotic, ONexotic, PEexotic, QCexotic, SKexotic

Range Map
No map available.

Ecology & Life History Not yet assessed
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Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank)
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Disclaimer: While I-Rank information is available over NatureServe Explorer, NatureServe is not actively developing or maintaining these data. Species with I-RANKs do not represent a random sample of species exotic in the United States; available assessments may be biased toward those species with higher-than-average impact.

I-Rank: Unknown
Rounded I-Rank: Unknown
I-Rank Reasons Summary: It is not clear that species is actually found in native species habitats, appearing most often in agriculture, cultivated gardens and the like. Although this may form dense stands in a crop, there are no reports of it having any negative effects on the native flora.
Subrank I - Ecological Impact: Medium/Insignificant
Subrank II - Current Distribution/Abundance: High/Medium
Subrank III - Trend in Distribution/Abundance: Medium/Low
Subrank IV - Management Difficulty: Medium/Insignificant
I-Rank Review Date: 12Mar2004
Evaluator: Fellows, M.
Native anywhere in the U.S?
Native Range: Native to Africa, from Madagascar to Egypt. Also native in Asia, from Turkey to India. Also native to eastern Europe, from Greece to the Russian Federation. Exact native range may not be known because it is widely naturalized (GRIN 2001).

Download "An Invasive Species Assessment Protocol: Evaluating Non-Native Plants for their Impact on Biodiversity". (PDF, 1.03MB)
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Screening Questions

S-1. Established outside cultivation as a non-native? YES
Comments: (Kartesz 1999).

S-2. Present in conservation areas or other native species habitat? Unknown
Comments: Washington Native Plant Society (1997) lists Hibiscus trionum as having a high potential to spread. Although Plants for a Future (2000) says the plant is only known from cultivated beds.

Subrank I - Ecological Impact: Medium/Insignificant

1. Impact on Ecosystem Processes and System-wide Parameters:Low significance/Insignificant
Comments: There are no reports of an ecosystem impact, therefore assumed to be either low or insignificant.

2. Impact on Ecological Community Structure:Medium significance/Insignificant
Comments: Annual forb (Kartesz 1999).

3. Impact on Ecological Community Composition:Unknown

4. Impact on Individual Native Plant or Animal Species:Unknown

5. Conservation Significance of the Communities and Native Species Threatened:Low significance/Insignificant
Comments: Cultivated fields and roadsides (Radford 1968).

Subrank II. Current Distribution and Abundance: High/Medium

6. Current Range Size in Nation:High significance
Comments: Throughout the U.S. except for NV, WY, AL, HI and AK (Kartesz 1999).

7. Proportion of Current Range Where the Species is Negatively Impacting Biodiversity:Medium/Low significance
Comments: Listed noxious in NC (Kartesz 1999). Listed as noxious in WA (also includes agricultural crop weeds) and as a seed-weed in CO (GRIN 2001). However, another source says it is no longer on the WA list (NWCB 2003). Also on lists in KY, the Northeast, NE and the Great Plains (NRCS 2004).

8. Proportion of Nation's Biogeographic Units Invaded:High significance
Comments: Potential in more than 47 ecoregions - inferred from Kartesz (1999) and TNC (2001).

9. Diversity of Habitats or Ecological Systems Invaded in Nation:Low significance/Insignificant
Comments: Cultivated fields and roadsides (Radford 1968).

Subrank III. Trend in Distribution and Abundance: Medium/Low

10. Current Trend in Total Range within Nation:Low significance
Comments: In 1940, Deam mentioned seeing it's rapid expansion in cornfields. The rank is inferred from several reports of this species having colonized the US region very early and currently having such a wide distribution.

11. Proportion of Potential Range Currently Occupied:Low significance/Insignificant
Comments: Inferred from current distribution.

12. Long-distance Dispersal Potential within Nation:High significance
Comments: Easily available for purchase on the internet.

13. Local Range Expansion or Change in Abundance:High/Moderate significance
Comments: Washington Native Plant Society (1997) lists Hibiscus trionum as having a high potential to spread. In 1940, Deam mentioned seeing it's rapid expansion in cornfields.

14. Inherent Ability to Invade Conservation Areas and Other Native Species Habitats:Low significance
Comments: Known to self-sow (UKY, Undated). Cultivated fields and roadsides (Radford 1968).

15. Similar Habitats Invaded Elsewhere:Low significance
Comments: Southeastern Canada to SK (Kartesz 1999). However it is rare in Canada, and linked to the same types of habitats as in the US (Roland 1983).

16. Reproductive Characteristics:Low significance/Insignificant
Comments: Easy to propagate from seed (UKY, Undated). Self-compatible (NWCB 2003). Seed is viable for less than one year (APRS 2001).

Subrank IV. General Management Difficulty: Medium/Insignificant

17. General Management Difficulty:Medium significance/Insignificant
Comments: Pulls easily (McConomy 2003). A small population was removed by hand pulling in 1998 (NWCB 2003).

18. Minimum Time Commitment:Low significance/Insignificant
Comments: Seed is viable for less than one year (APRS 2001).

19. Impacts of Management on Native Species:Medium significance/Insignificant
Comments: Inferred - preferred method involves minimal impact on nearby plants.

20. Accessibility of Invaded Areas:Unknown
Authors/Contributors
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Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
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  • Alien plants ranking system (APRS) Implementation Team. 2001a. Alien plants ranking system version 7.1. Southwest Exotic Plant Information Clearinghouse, Flagstaff, AZ. Online. Available: http://www.usgs.nau.edu/swepic/ (accessed 2004).

  • Deam, C. C. 1940. Flora of Indiana. Division of Forestry, Dept. of Conservation, Indianapolis, Indiana. 1236 pp.

  • Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

  • Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.

  • McConomy, G.J. 2003. Plant Profiles at GJohnMcConomy.com. Hibiscus trionum: Flower-of-the-Hour. Available ONLINE: http://www.gjohnmcconomy.com/plants/profiles/hibiscustrionum.html. Accessed 11 March 2004.

  • No author. No date. Plants for a future database. Available: http://www.comp.leeds.ac.uk/pfaf/D_intro.html. (Accessed 2004).

  • Radford, A.E., H.E. Ahles, and C.R. Bell. 1968. Manual of the vascular flora of the Carolinas. Univ. North Carolina Press, Chapel Hill, NC. 1183 pp.

  • Roland, A.E., and E.C. Smith. 1983. The flora of Nova Scotia: Volumes 1 and 2. Nova Scotia Museum, Halifax, NS, Canada. 746 pp.

  • The Nature Conservancy. 2001. Map: TNC Ecoregions of the United States. Modification of Bailey Ecoregions. Online . Accessed May 2003.

  • USDA, ARS, National Genetic Resources Program. 2001. Germplasm Resources Information Network - (GRIN). [Online Database]. National Germplasm Resources Laboratory, Beltsville, Maryland.URL: http://www.ars-grin.gov/var/apache/cgi-bin/npgs/html/taxon.pl?6438. (Accessed 2004)

  • USDA, NRCS. 2004. The PLANTS Database, Version 3.5 (http://plants.usda.gov) . National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

  • University of Kentucky (UKY) Horticulture Department. Undated. Helleborus to Hibiscus. Kentucky Garden Flowers. Accessed ONLINE http://www.uky.edu/Ag/Horticulture/gardenflowers/hehi.htm. Accessed March 2004.

  • Washington Native Plant Society (WNPS). 1997. Preliminary List of Exotic Pest Plants of Greatest Ecological Concern in Oregon and Washington. ONLINE. http://www.wnps.org/eppclist.html. Accessed 2004, January.

  • Washington State Noxious Weed Control Board (NWCB). 2003. Written Findings of the State Noxious Weed Control Board. Available: http://www.nwcb.wa.gov/weed_info/contents_common.html. (Accessed 2004).

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