J.]. Genetic diversity within commercial popuations of watercress (Rorippa nasturtium-aquaticum), and between allied Brassicaceae inferred from RAPD-PCR. Nasturtium officinale R. Br. Revista Brasieira de Ciencias Farmaceuticas, 42(3):455-460, Staples GW, Herbst D, Imada CT, 1999. International Journal of Environmental Science and Technology, 2(1):63-67. http://www.ceers.org/ijest/issues/abstract_result.asp?ID=201009, Kaskey JB, Tindall DR, 1979. As a long day plant, N. officinale flowers as day length increases, and flowering tends to occur in mid to late summer (Bleasdale, 1964). http://plants.usda.gov/. This species is also capable of vegetative reproduction (Howard and Lyon 1952). http://www.efloras.org/flora_page.aspx?flora_id=1, George, R. A. T., 2009. It is often found in … Please consider upgrading your browser to the latest version or installing a new browser. Nutrition and Cancer, 55(2):232-241, Bugbee GJ, Balfour ME, 2010. In South Africa, controlled cultivation is permitted, despite the plant being classed as a Category 2: declared invader (Henderson and Cilliers, 2002). Br.) Biological flora of the British Isles. Ovary purplish-green, 2.5 mm long, glabrous. This difference in the temperature tolerance of the two species is reinforced by their distribution in New Zealand, where N. microphyllum is more common further south (Mason, 1982; Coffey and Clayton, 1988). Howard, H.W., Lyon, A.G. 1952. Available http://michiganflora.net/species.aspx?id=670. inval. 2013. Food Additives and Contaminants, 22(12):1203-1208, Guarrera PM, Salerna G, Caneva G, 2005. (Brassicaceae). (Rorippa Nasturtium-Aquaticum (L.) Hayek). Journal of Applied Ecology 19(2): 589—601. Occurrences are summarized in Table 1, alphabetically by state, with years of earliest and most recent observations, and the tally and names of drainages where the species was observed. Gill, C. I., S. Haldar, L.A. Boyd, R. Bennett, J. Whiteford, M. Butler, J.R. Pearson, I. Bradbury, and I. R. Rowland. Fish and Wildlife Service, Arlington, Va. 145 pp. It may also have cancer-suppressing properties, and is widely believed to help defend against lung cancer. Nasturtium officianale. officinale is commonly cultivated for human consumption as a vegetable and for medicinal purposes, and could become even more widely dispersed by human agency. 2010. 16. Aquatic Botany, 7(3):209-229, Mas-Coma MS, Esteban JG, Bargues MD, 1999. Bot., Lond, 10:1-13, Howard-Williams C, Davies J, Pickmere S, 1981. Stink bugs (Nezara viridula, Nysius spp.) http://www.lifescript.com/food/articles/w/watercress_has_its_benefits.aspx#disqus_thread, Andrianova TV, Minter DW, 2004. Hydrobiologia, 607:75-85. http://springerlink.metapress.com/content/1573-5117/, Guadagnin SG, Rath S, Reyes FGR, 2005. 2010. For queries involving fish, please contact Matthew Neilson. Gauteng, South Africa. Nasturtium: Family: Brassicaceae (Mustard) Life cycle: perennial: Origin: Europe: Status: Invasive - ERADICATE! Annals of Applied Biology, 149(3):357-363, Boyd LA, McCann MJ, Hashim Y, Bennett RN, Gill CIR, Rowland IR, 2006. According to Howard and Lyon (1952a; b) the species is often extensively grazed by cattle, especially in dry weather. It is being provided to meet the need for timely best science. However, it does absorb nitrogen and phosphorus and has been considered for use in stripping nutrients from streams (Howard-Williams et al., 1982). In Australia, N. officinale seems to have been first collected in Tasmania in 1869 (Australia’s Virtual Herbarium, 2014), but whether the plants were being cultivated or not was not recorded. September 2018. N. officinale was described in 1857 as a rare escape from cultivation in the USA, but by the end of the 1800s it had reached the west coast (IPANE, 2014). Cauline leaves: petiole not winged, base auriculate; blade 3-9(-13)-foliolate, (1-) 2-15(-22) cm; lateral leaflets sessile or petiolulate, rachis not winged, blade smaller than terminal; terminal leaflet (or simple blade) suborbicular to ovate, or oblong to lanceolate, (0.4-)1-4(-5) cm × (3-)7-25(-40) mm, base obtuse, cuneate, or subcordate, margins entire or repand, apex obtuse. An attempt at weed control and eradication in New Zealand in 1856, using the Australian black swan (Cygnus atratus), was unsuccessful, although the Australian black swan thrived and became a problem in its own right (Healy, 1996). (1982) estimated that during peak growing times, the biomass of a New Zealand N. officinale population doubled in 12.2 days. Plant and Soil, 47(2):395-406, Dreyfuss G, Vignoles P, Rondelaud D, 2003. 421-433, Borth WB, Fukuda SK, Hamasaki RT, Hu JS, Almeida RPP, 2006. Stems are hollow, angular to 10-60 cm long, erect to ascending or creeping, from taproot and fibrous roots, often rooting at nodes, then ascending or floating. It prefers to grow in slow-flowing, clean water 5-10 cm deep with an optimum pH of 7.2, favouring streams fed from springs originating from chalk or limestone substrata. Flora of North America treatment of Nasturtium officinale. American Journal of Clinical Nutrition, 85(2):504-510, Going B, Simpson J, Even T, 2008. When several references are cited, they may give conflicting information on the status. Seed pods shatter open and scatter seed when they are ripe, with most seeds falling close to the parent plant. Detection, characterisation and transmission by Macrosteles leafhoppers of watercress yellows phytoplasma in Hawaii. Extracts can attract schistosomiasis host, Northeastern Lake Ontario-Lake Ontario-St. Lawrence, http://michiganflora.net/species.aspx?id=670, http://wisplants.uwsp.edu/scripts/detail.asp?SpCode=NASOFF, http://www.ecy.wa.gov/Programs/wq/plants/plantid2/descriptions/rornas.html, http://dnr.wi.gov/topic/Invasives/documents/classification/Nasturtium%20officinale.pdf, US Fish and Wildlife Service Ecological Risk Screening Summary for. https://npgsweb.ars-grin.gov/gringlobal/taxon/taxonomysearch.aspx, USDA-NRCS, 2014. The function of root systems in mineral nutrition of watercress (Rorippa nasturtium-aquaticum (L) Hayek). Oecologia 92(1): 1—7. A.]. Productivity of Rorippa nasturtium-aquaticum (L.) Hayek (Productividad de Rorippa nasturtium-aquaticum (L.) Hayek). Family Brassicaceae. Accidental introduction could result from contaminated aquarium stock, although this would be unlikely to legally pass modern biosecurity border checks.