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High Risk, Widely Naturalized, Agricultural Weed, Tropical Vine, Seed Contaminant

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High Risk, Widely Naturalized, Agricultural Weed, Tropical Vine, Seed Contaminant Family: Convolvulaceae Taxon: Ipomoea triloba Synonym: Ipomoea krugii Urb. Common Name: little bell three-lobed morning-glory Questionaire : current 20090513 Assessor: Chuck Chimera Designation: H(HPWRA) Status: Assessor Approved Data Entry Person: Chuck Chimera WRA Score 15 101 Is the species highly domesticated? y=-3, n=0 n 102 Has the species become naturalized where grown? y=1, n=-1 103 Does the species have weedy races? y=1, n=-1 201 Species suited to tropical or subtropical climate(s) - If island is primarily wet habitat, then (0-low; 1-intermediate; 2- High substitute "wet tropical" for "tropical or subtropical" high) (See Appendix 2) 202 Quality of climate match data (0-low; 1-intermediate; 2- High high) (See Appendix 2) 203 Broad climate suitability (environmental versatility) y=1, n=0 n 204 Native or naturalized in regions with tropical or subtropical climates y=1, n=0 y 205 Does the species have a history of repeated introductions outside its natural range? y=-2, ?=-1, n=0 y 301 Naturalized beyond native range y = 1*multiplier (see y Appendix 2), n= question 205 302 Garden/amenity/disturbance weed n=0, y = 1*multiplier (see Appendix 2) 303 Agricultural/forestry/horticultural weed n=0, y = 2*multiplier (see y Appendix 2) 304 Environmental weed n=0, y = 2*multiplier (see Appendix 2) 305 Congeneric weed n=0, y = 1*multiplier (see y Appendix 2) 401 Produces spines, thorns or burrs y=1, n=0 n 402 Allelopathic y=1, n=0 n 403 Parasitic y=1, n=0 n 404 Unpalatable to grazing animals y=1, n=-1 405 Toxic to animals y=1, n=0 y 406 Host for recognized pests and pathogens y=1, n=0 407 Causes allergies or is otherwise toxic to humans y=1, n=0 y 408 Creates a fire hazard in natural ecosystems y=1, n=0 n 409 Is a shade tolerant plant at some stage of its life cycle y=1, n=0 y 410 Tolerates a wide range of soil conditions (or limestone conditions if not a volcanic island) y=1, n=0 411 Climbing or smothering growth habit y=1, n=0 y Print Date: 10/23/2012 Ipomoea triloba (Convolvulaceae) Page 1 of 8 412 Forms dense thickets y=1, n=0 n 501 Aquatic y=5, n=0 n 502 Grass y=1, n=0 y 503 Nitrogen fixing woody plant y=1, n=0 n 504 Geophyte (herbaceous with underground storage organs -- bulbs, corms, or tubers) y=1, n=0 n 601 Evidence of substantial reproductive failure in native habitat y=1, n=0 n 602 Produces viable seed y=1, n=-1 y 603 Hybridizes naturally y=1, n=-1 604 Self-compatible or apomictic y=1, n=-1 y 605 Requires specialist pollinators y=-1, n=0 n 606 Reproduction by vegetative fragmentation y=1, n=-1 n 607 Minimum generative time (years) 1 year = 1, 2 or 3 years = 0, 1 4+ years = -1 701 Propagules likely to be dispersed unintentionally (plants growing in heavily trafficked y=1, n=-1 areas) 702 Propagules dispersed intentionally by people y=1, n=-1 703 Propagules likely to disperse as a produce contaminant y=1, n=-1 y 704 Propagules adapted to wind dispersal y=1, n=-1 n 705 Propagules water dispersed y=1, n=-1 706 Propagules bird dispersed y=1, n=-1 n 707 Propagules dispersed by other animals (externally) y=1, n=-1 708 Propagules survive passage through the gut y=1, n=-1 y 801 Prolific seed production (>1000/m2) y=1, n=-1 n 802 Evidence that a persistent propagule bank is formed (>1 yr) y=1, n=-1 803 Well controlled by herbicides y=-1, n=1 y 804 Tolerates, or benefits from, mutilation, cultivation, or fire y=1, n=-1 805 Effective natural enemies present locally (e.g. introduced biocontrol agents) y=-1, n=1 n Designation: H(HPWRA) WRA Score 15 Print Date: 10/23/2012 Ipomoea triloba (Convolvulaceae) Page 2 of 8 Supporting Data: 101 1997. Holm, L.G./Doll, J./Holm, E./Pancho, [Is the species highly domesticated? No evidence] J.V./Herberger, J.P.. World weeds: natural histories and distribution. John Wiley and Sons, Inc., New York, NY 102 2012. WRA Specialist. Personal Communication. NA 103 2012. WRA Specialist. Personal Communication. NA 201 1999. Wagner, W.L./Herbst, D.R./Sohmer, S.H.. [Species suited to tropical or subtropical climate(s) 2-High] "Native to the West Manual of the flowering plants of Hawaii. Revised Indies…" edition.. University of Hawai‘i Press and Bishop Museum Press, Honolulu, HI. 202 1999. Wagner, W.L./Herbst, D.R./Sohmer, S.H.. [Quality of climate match data 2-High] Manual of the flowering plants of Hawaii. Revised edition.. University of Hawai‘i Press and Bishop Museum Press, Honolulu, HI. 203 1997. Holm, L.G./Doll, J./Holm, E./Pancho, [Broad climate suitability (environmental versatility)? No] "It may have been native J.V./Herberger, J.P.. World weeds: natural to tropical America but is now widespread in the tropical regions of the world." … histories and distribution. John Wiley and Sons, "It is found from sea level to 750 m altitude" Inc., New York, NY 204 1999. Wagner, W.L./Herbst, D.R./Sohmer, S.H.. [Native or naturalized in regions with tropical or subtropical climates? Yes] "Native Manual of the flowering plants of Hawaii. Revised to the West Indies…" edition.. University of Hawai‘i Press and Bishop Museum Press, Honolulu, HI. 204 2012. USDA ARS National Genetic Resources [Native or naturalized in regions with tropical or subtropical climates? Yes] "widely Program. Germplasm Resources Information naturalized in tropics" Network - (GRIN). http://www.ars-grin.gov/cgi- bin/npgs/html/index.pl 205 2012. WRA Specialist. Personal Communication. [Does the species have a history of repeated introductions outside its natural range? Yes] Widely introduced and naturalized throughout the tropics 301 1995. Wu, Z.Y./Raven, P.H. (eds.). Flora of [Naturalized beyond native range? Yes] "Roadsides or fields; 0–800 m. Anhui, China Vol. 16 (Gentianaceae through Guangdong, S Shaanxi, Taiwan, Zhejiang [Indonesia, Japan (Ryukyu Islands), Boraginaceae). Science Press & Missouri Malaysia, New Guinea, Philippines, Sri Lanka, Thailand, Vietnam; North America Botanical Garden Press, Beijing & St. Louis (native to the West Indies), Pacific Islands, now a circumtropical weed]" 301 1998. Agyakwa, C.W./Akobundu, I.O.. A [Naturalized beyond native range? Yes] "A common weed of cultivation, handbook of West African weeds. International roadsides and homesteads. Probably introduced as an ornamental but has now Institute of Tropical Agriculture, Ibadan, Nigeria become a widespread weed." 301 1999. Wagner, W.L./Herbst, D.R./Sohmer, S.H.. [Naturalized beyond native range? Yes] "naturalized in low elevation, dry to Manual of the flowering plants of Hawaii. Revised mesic, disturbed sites" edition.. University of Hawai‘i Press and Bishop Museum Press, Honolulu, HI. 301 2007. Oppenheimer, H.L.. New plant records [Naturalized beyond native range? Yes] "Another commonly naturalized morning from Moloka‘i, Lāna‘i, Maui, and Hawai‘i for 2006. glory in Hawai‘i, little bell was previously documented from the islands of Midway Bishop Museum Occasional Papers. 96: 17-34. Atoll, Kaua‘i, O‘ahu, Moloka‘i, Maui, and Hawai‘I (Wagner et al. 1999: 560; Oppenheimer & Bartlett 2002: 6; Oppenheimer 2006 : 11). It is a true morning glory, with flowers closing by mid-day. In addition to the collection cited here, it was also observed growing on fences and in hedges near Läna‘i City." 301 2010. CSIRO. Australian Tropical Rainforest [Naturalized beyond native range? Yes] "An introduced species originally from Plants Edition 6 - Ipomoea triloba. tropical America, now a pantropic weed. Naturalized in NT, CYP, NEQ and http://keys.trin.org.au/key-server/data/0e0f0504- southwards as far as south eastern Queensland. Altitudinal range from near sea 0103-430d-8004- level to 250 m." 060d07080d04/media/Html/taxon/Ipomoea_triloba .htm [Accessed 23 Oct 2012] 301 2012. USDA ARS National Genetic Resources [Naturalized beyond native range? Yes] "widely naturalized in tropics" Program. Germplasm Resources Information Network - (GRIN). http://www.ars-grin.gov/cgi- bin/npgs/html/index.pl 302 1975. Henty, E.E./Pritchard, G.H.. Weeds of New [Garden/amenity/disturbance weed? A disturbance weed with negative impacts Guinea and their control. 2nd edition. Department on agriculture] "a weed of roadsides, hedges and gardens; common in a few of Forests, Division of Botany, Lae, Papua New coastal areas" Guinea Print Date: 10/23/2012 Ipomoea triloba (Convolvulaceae) Page 3 of 8 302 1997. Holm, L.G./Doll, J./Holm, E./Pancho, [Garden/amenity/disturbance weed? A disturbance weed with negative impacts J.V./Herberger, J.P.. World weeds: natural on agriculture] histories and distribution. John Wiley and Sons, Inc., New York, NY 303 1997. Holm, L.G./Doll, J./Holm, E./Pancho, [Agricultural/forestry/horticultural weed? Yes] "This twining, fast-growing J.V./Herberger, J.P.. World weeds: natural herbaceous plant is troublesome in a very large number of man's crops." … "It is histories and distribution. John Wiley and Sons, found in upland cultivated crops, grasslands, waysides and waste places, and Inc., New York, NY because of its creeping, twining habit , may overwhelm other vegetation in farmer's fields and in natural areas. It is found from sea level to 750 m altitude" … "I. triloba behaves as a weed on all of the continents and it troubles man in more than 40 of his crops. It is a weed in more than 40 countries and it is interesting that almost all of these countries are within 15⁰ C isotherms north and south of the equator." 303 2007.
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