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Hoodia Gordonii SCORE: 0.0 RATING: Low Risk TAXON: Hoodia gordonii SCORE: 0.0 RATING: Low Risk Taxon: Hoodia gordonii Family: Apocynaceae Common Name(s): ghaap Synonym(s): Hoodia barklyi Dyer hoodia Hoodia burkei N. E. Br. Hoodia longispina Plowes Stapelia gordonii Masson Assessor: Chuck Chimera Status: Assessor Approved End Date: 15 Apr 2015 WRA Score: 0.0 Designation: L Rating: Low Risk Keywords: Succulent, Spiny, Medicinal, Fly-Pollinated, Wind-Dispersed Qsn # Question Answer Option Answer 101 Is the species highly domesticated? y=-3, n=0 n 102 Has the species become naturalized where grown? 103 Does the species have weedy races? Species suited to tropical or subtropical climate(s) - If 201 island is primarily wet habitat, then substitute "wet (0-low; 1-intermediate; 2-high) (See Appendix 2) High tropical" for "tropical or subtropical" 202 Quality of climate match data (0-low; 1-intermediate; 2-high) (See Appendix 2) High 203 Broad climate suitability (environmental versatility) y=1, n=0 n Native or naturalized in regions with tropical or 204 y=1, n=0 y subtropical climates Does the species have a history of repeated introductions 205 y=-2, ?=-1, n=0 ? outside its natural range? 301 Naturalized beyond native range y = 1*multiplier (see Appendix 2), n= question 205 n 302 Garden/amenity/disturbance weed n=0, y = 1*multiplier (see Appendix 2) n 303 Agricultural/forestry/horticultural weed n=0, y = 2*multiplier (see Appendix 2) n 304 Environmental weed n=0, y = 2*multiplier (see Appendix 2) n 305 Congeneric weed n=0, y = 1*multiplier (see Appendix 2) n 401 Produces spines, thorns or burrs y=1, n=0 y 402 Allelopathic 403 Parasitic y=1, n=0 n 404 Unpalatable to grazing animals 405 Toxic to animals y=1, n=0 n 406 Host for recognized pests and pathogens 407 Causes allergies or is otherwise toxic to humans y=1, n=0 n 408 Creates a fire hazard in natural ecosystems y=1, n=0 n Creation Date: 15 Apr 2015 (Hoodia gordonii) Page 1 of 17 TAXON: Hoodia gordonii SCORE: 0.0 RATING: Low Risk Qsn # Question Answer Option Answer 409 Is a shade tolerant plant at some stage of its life cycle Tolerates a wide range of soil conditions (or limestone 410 conditions if not a volcanic island) 411 Climbing or smothering growth habit y=1, n=0 n 412 Forms dense thickets 501 Aquatic y=5, n=0 n 502 Grass y=1, n=0 n 503 Nitrogen fixing woody plant y=1, n=0 n Geophyte (herbaceous with underground storage organs 504 y=1, n=0 n -- bulbs, corms, or tubers) Evidence of substantial reproductive failure in native 601 habitat 602 Produces viable seed y=1, n=-1 y 603 Hybridizes naturally y=1, n=-1 y 604 Self-compatible or apomictic 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, 4+ years = -1 3 Propagules likely to be dispersed unintentionally (plants 701 growing in heavily trafficked areas) 702 Propagules dispersed intentionally by people y=1, n=-1 y 703 Propagules likely to disperse as a produce contaminant 704 Propagules adapted to wind dispersal y=1, n=-1 y 705 Propagules water dispersed y=1, n=-1 n 706 Propagules bird dispersed y=1, n=-1 n 707 Propagules dispersed by other animals (externally) 708 Propagules survive passage through the gut y=1, n=-1 n 801 Prolific seed production (>1000/m2) Evidence that a persistent propagule bank is formed (>1 802 yr) 803 Well controlled by herbicides 804 Tolerates, or benefits from, mutilation, cultivation, or fire Effective natural enemies present locally (e.g. introduced 805 y=-1, n=1 y biocontrol agents) Creation Date: 15 Apr 2015 (Hoodia gordonii) Page 2 of 17 TAXON: Hoodia gordonii SCORE: 0.0 RATING: Low Risk Supporting Data: Qsn # Question Answer 101 Is the species highly domesticated? n Source(s) Notes Oyen, L.P.A., 2013. Hoodia gordonii (Masson) Sweet ex Decne. In: Schmelzer, G.H. & Gurib-Fakim, A. (Editors). No evidence Prota 11(2): Medicinal plants/Plantes médicinales 2. PROTA, Wageningen, Netherlands 102 Has the species become naturalized where grown? Source(s) Notes WRA Specialist. 2015. Personal Communication NA 103 Does the species have weedy races? Source(s) Notes WRA Specialist. 2015. Personal Communication NA Species suited to tropical or subtropical climate(s) - If 201 island is primarily wet habitat, then substitute "wet High tropical" for "tropical or subtropical" Source(s) Notes "Widely distributed from the Brandberg in Namibia to the south- Court, D. 2000. Succulent Flora of Southern Africa. Revised western Cape and across to Prince Albert; also in the Northern Cape Edition. A.A. Balkema, Rotterdam, Netherlands to Kimberley." [Latitudinal range extends into the tropics] 202 Quality of climate match data High Source(s) Notes Court, D. 2000. Succulent Flora of Southern Africa. Revised Edition. A.A. Balkema, Rotterdam, Netherlands 203 Broad climate suitability (environmental versatility) n Source(s) Notes "H. gordonii occurs in a wide variety of arid habitats characterised by Swart E. 2008. Hoodia gordonii in Southern Africa. WG 3 ʹ sparse vegetation, ranging from coastal to mountainous habitats. Succulents and Cycads, Case Study 6 ʹHoodia gordonii. Generally the species do, however, prefer arid gravel or shale plains, Mexico, NDF Workshop Case Studies slopes and ridges, ranging in altitudes from 250m to 1200m." "Hoodia gordonii has a very wide distribution. It occurs in the South African National Biodiversity Institute. 2005. northeastern part of the Western Cape, the north and northwestern PlantzAfrica.com - Hoodia gordonii. regions of the Northern Cape and southern Namibia . It is used to http://www.plantzafrica.com/planthij/hoodgord.htm. extreme heat (above 40°C), but it can survive in relatively low [Accessed 15 Apr 2015] temperatures (-3°C)." Creation Date: 15 Apr 2015 (Hoodia gordonii) Page 3 of 17 TAXON: Hoodia gordonii SCORE: 0.0 RATING: Low Risk Qsn # Question Answer "Most of these species grow in areas of Africa where winters are dry, periods of rainfall are short and the plants adapt by becoming dormant and loosing roots. Here in Hawaii winters are the most rainy Rau, E. 2015. President, Sustainable Bioresources, LLC. season, rain occurs frequently throughout the year and periods of Personal Communication. 14 April prolonged wet soil conditions are encountered. Last summer here was also very wet and wet soil conditions persisted for months. When these plants are dormant they become highly susceptible to bacterial and fungal rot, mites and mite transmitted diseases." [Restricted to arid climates] "Hoodia gordonii occurs in a wide range Oyen, L.P.A., 2013. Hoodia gordonii (Masson) Sweet ex of arid habitats in desert, semi-desert and savanna vegetation, from Decne. In: Schmelzer, G.H. & Gurib-Fakim, A. (Editors). coastal to mountainous, on gentle to steep shale ridges, in dry rocky Prota 11(2): Medicinal plants/Plantes médicinales 2. places to sandy spots in riverbeds. It is most common in summer- PROTA, Wageningen, Netherlands rainfall areas and is of only scattered occurrence in drier winter- rainfall areas where some summer rainfall occurs." Native or naturalized in regions with tropical or 204 y subtropical climates Source(s) Notes "Widely distributed from the Brandberg in Namibia to the south- Court, D. 2000. Succulent Flora of Southern Africa. Revised western Cape and across to Prince Albert; also in the Northern Cape Edition. A.A. Balkema, Rotterdam, Netherlands to Kimberley." [Latitudinal range extends into the tropics] Does the species have a history of repeated 205 ? introductions outside its natural range? Source(s) Notes "Attempts to farm the species Hoodia gordonii outside its normal Holt, S., & Taylor, T. V. (2006). Hoodia gordonii. An habitat have been generally unsuccessful, with notable overview of biological and botanical characteristics exceptions.1,3 Hoodia plants are extremely difficult to grow, and Townsend Letter, 280: 104-113 they need a lot of care and attention, with obligatory requirements of watering, sunlight exposure, and specific seasonal temperatures." Tibe, O., Modise, D. M., & Mogotsi, K. K. (2008). Potential for domestication and commercialization of Hoodia and "The plant is cultivated in South Africa but it has not been harvested. Opuntia species in Botswana. African Journal of It is reported that it has been cultivated in Chile." Biotechnology, 7(9): 1199-1203 Bishop Museum. 2015. Online Natural Sciences No specimens present in the Online Natural Sciences Collections Collections. http://nsdb.bishopmuseum.org/. [Accessed database 15 Apr 2015] Creation Date: 15 Apr 2015 (Hoodia gordonii) Page 4 of 17 TAXON: Hoodia gordonii SCORE: 0.0 RATING: Low Risk Qsn # Question Answer 301 Naturalized beyond native range n Source(s) Notes Randall, R.P. 2012. A Global Compendium of Weeds. 2nd Edition. Department of Agriculture and Food, Western No evidence Australia Wagner, W.L., Herbst, D.R.& Lorence, D.H. 2015. Flora of the Hawaiian Islands. Smithsonian Institution, Washington, D.C. No evidence http://botany.si.edu/pacificislandbiodiversity/hawaiianflo ra/index.htm. [Accessed 15 Apr 2015] 302 Garden/amenity/disturbance weed n Source(s) Notes Randall, R.P. 2012. A Global Compendium of Weeds. 2nd Edition. Department of Agriculture and Food, Western No evidence Australia 303 Agricultural/forestry/horticultural weed n Source(s) Notes Randall, R.P. 2012. A Global Compendium of Weeds. 2nd Edition. Department of Agriculture and Food, Western No evidence Australia 304 Environmental weed n Source(s) Notes Randall, R.P. 2012. A Global Compendium of Weeds. 2nd Edition. Department of Agriculture and Food, Western No evidence Australia 305 Congeneric weed n Source(s) Notes Holm, L.G., Doll, J., Holm, E., Pancho, J.V. & Herberger, J.P. 1997. World weeds: natural histories and distribution.
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