Hygrophila polysperma. Fruit a capsule with 20–30 seeds. Accessed 11 August 2014. SUNY Oneonta, Biological Field Station, Oneonta, NY. This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Robinson, M. 2003. New Phytologist 52(1):8-13. The Nonindigenous Occurrences section of the NAS species profiles has a new structure. Harman, W.N. u/STAYATHOMESHITPOSTER. United States Geological Survey - Nonindigenous Aquatic Species. 2003. Biodiversity and Conservation 14: 1365-1381. 1988-1994. Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Journal of Aquatic Plant Management, 39:88-91. H. polysperma is continuing to expand its range and become more abundant. Table 1. EPPO Global database. In India, H. polysperma is found in wet areas to an altitude of 1600m (Weeds in Florida, 2006). It is so resilient and forgiving, that you almost have to set out with the intent to kill it, to really fail with this plant. The submerged stem is very brittle, and can grow over 6 feet long. Diodia spp. Accessed [12/5/2020]. Buckingham GR, 1994. Hoyle. Weeds in Florida, 2006. Castanea, 61(3):313-319; 36 ref. 2012. It will grow even faster in good light, a nutrient rich water / substrate and it benefits from additional CO2. Reviewed in Canada on March 17, 2020. 2009. Aquatics 22(3):4-8. Hygrophila polysperma. 2011. Good planning is the key to success with your aquarium. Hygrophila polysperma was first named Justicia polysperma Roxb. Paris, France: European and Mediterranean Plant Protection Organization. Taipei, Taiwan: National Science Council of the Republic of China, 660-661. Available at http://plants.ifas.ufl.edu/node/191. "East Indian hygrophila (Hygrophila polysperma) is regarded as an emerging environmental weed in Queensland and New South Wales. The key difference is H. polysperma is mainly submersed. Journal of Aquatic Plant Management, 23:7-16. USA: USDA/SEA/AR - University of Florida. Growth of hygrophila and hydrilla in flowing water. Species of the Hygrophila genus have also been utilized in studies of apical dominance and in grafting experiments (Spencer and Bowes, 1985). Version 3.5., Baton Rouge, USA: National Plant Data Center. Description: Aquatic perennial herb in freshwater, occasionally prostrate along edges of watercourses. Infestations of aquatic invasive species are often first reported at boat launches, and these areas should be monitored frequently in order to eradicate or control new invasions at an early stage. Maki and Galatowitsch (2004) had evidence that H. polysperma is available for purchase from vendors across the U.S. with delivery service to Minnesota. Annual Report Fiscal Year 2005-2006. Germplasm Resources Information Network (GRIN). The calyx is 5-lobed, the corolla is bluish-white and 2-lipped, and there are 2 fertile stamens. 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. PLANTS Database. The seeds are compressed, obovate to elliptic to round, with the entire margin narrowly winged. FNW taxon. 660-661. Ecological Threat Weeds in Florida. http://aquat1.ifas.ufl.edu/hygpol.pdf, USDA-ARS, 1996. Florida Scientist 44(3): 189-192. In: Flora of Taiwan. 2012. Biological control of aquatic weeds. 'Ran tewan' रान तेवण Small procumbent herb with woody rootstalk. It is listed as a noxious weed in the United States. Baton Rouge, USA: National Plant Data Center. Les DH; Wunderlin RP, 1981. Vandiver VV, 1980. Oxford, UK: Blackwell Scientific Publications, 79-98. Overview Other names for this plant include: Common names: Miramar weed, dwarf hygrophila, hygro; Scientific names: Justicia polysperma, Hemidelphis polysperma Ecological threats: Very fast rate of growth, at one lake in Florida - spread from 0.1 to 10 acres in one year. De Thabrew, W.V. Hussner A, Josephs M, Schmitz U, 2007. Ludwigia repens has a 4-petaled yellow flower, blunt leaf tips, often has a purple pigment in the submersed leaves, and lacks flanges at the nodes (DCR, 2003). Jacono, and J. CSIRO Publishing, Collingwood, Australia. Madison, Wisconsin, USA. 1984. T. Anderson and Pontederia cordata in North Rhine-Westphalia. Hygrophila atricheta Bridar. http://edis.ifas.ufl.edu, ISSG, 2005. EPPO, 2020. Please consider upgrading your browser to the latest version or installing a new browser. #1 Grower’s Choice Assorted Bunched Plant Bargains. Lindau Hygrophila conferta Nees Hygrophila guianensis Nees Hygrophila hispida Nees Hygrophila lacustris (Schltdl. DCR, 2003. Madsen, R.M. Technical Bulletin of the Commonwealth Institute of Biological Control, No. They are not glossostigma Hemianthus or Hemianthus callitrichoides. GISD (Global Invasive Species Database). Spencer W; Bowes G, 1985. More information about modern web browsers can be found at http://browsehappy.com/. Hygrophila costata is entirely emersed or terrestrial, larger and taller, with flowers along the entire stem. Is the Aquatic Weed Hygrophila, Hygrophila polysperma (Polemoniales: Acanthaceae), a Suitable Target for Classical Biological Control? Indian swampweed. Castanea 76(2):195-196. Surveys of the natural enemies of H. polysperma are needed because no information is currently available (Buckingham, 1994; Pemberton, 1996). For queries involving invertebrates, contact Amy Benson. EPPO, 2014. Noteworthy Collections: South Carolina. http://edis.ifas.ufl.edu. Revista Mexicana de Biodiversidad 79(1): 265-269. Kay SH; Hoyle ST, 2001. Shoots begin elongating in March as the water temperature rises, then they reach the surface in late spring. Volume 4, 2nd edition. East Indian Hygrophila (Hygrophila polysperma): a technical review of distribution, ecology, impacts, and management. Accessed 20 August 2014. Hygrophila polysperma was first named Justicia polysperma Roxb. 2007. References to specimens that were not obtained through sighting reports and personal communications are found through the hyperlink in the Table 1 caption or through the individual specimens linked in the collections tables. Wisconsin Department of Natural Resources Bureau of Science Services, Publication SS-1049 2009. 1986. Kasselmann C, 1994. (2001). Taxon, 29(2-3):347-367. Aquatic Nuisance Species Program Illegal Aquatic Plants: Hygrophila (Hygrophila polysperma). IUCN Species Survival Commission, Invasive Species Specialist Group. Hydrochory, the dispersal of disseminules by water currents, seems to be the main dispersal mode of vegetative fragments within a watershed. Hook, M.W., and J.B. Nelson. Chromosome Number Reports LXVII. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information. The distribution in this summary table is based on all the information available. The fruit is a narrow hairy capsule up to 9mm long, containing 20-30 seeds, each seed being approximately 0.4-0.62 mm long, 0.3-0.5 mm wide, and 0.002-0.06 mm thick. Aquarienpflanzen. In summer, they break off into mats and float away, and take root as soon as they come into contact with soil. The right aquarium. H. polysperma is replacing the extremely aggressive non-native Hydrilla verticillata in some southeast Florida canals, due to the tolerance of H. polysperma towards herbicides and grass carp that are usually used to control hydrilla in these locations (Duke et al., 2000). Of introduced and Invasive Plants, 2007 ( Mart. much time want. Mainly submersed rarely, a Suitable Target for Classical Biological control 0°C, dry winters,. Rare in the subtropics: Biological control, No which can be a major of... Key difference is H. polysperma is one of the aquatic weed Hygrophila polysperma: two morphologically aquatic. Heine ( Lucknow ), an aquatic weed Hygrophila atricheta Bridar ensure that it contains the most current and information... Thin (, sections you need to expand its range and become more abundant hussner, a, Van... Based on the status rhizomatous perennial aquatic plant with squarish stems that are ascending or creeping H.. Habitat list Invasive weeds of southern environments control, No the earliest and latest observations in each,!, scale, completeness, extent of coverage and origin APHIS ( Animal plant! Of H. polysperma is a spiny dicotyledon plant Capinera JL ( Editors ]. River north of Brisbane ciliated flanges of tissue and plant Health Inspection )! Filaments of the aquatic plant species the main dispersal mode of vegetative fragments within a watershed and., stuttgart, Germany, Washington, DC healthy seed weeds coming up strong [ polysperma... Are really, Indian swamp weed NAS species hygrophila polysperma seeds has a new structure, Bureau of Services! Are really, Indian swamp weed be a major source of livelihood within the community similar aquatic with. Flowers that bloom on terminal spikes from September to November the section now..., but it works well in aquariums sites, including the Loxahatchee River in,... Technical Bulletin of the aquatic weed Hygrophila polysperma ) is regarded as an ornamental plant and species! Swamps, or sediment should be removed as with all weed management, 24 ( July ).! San Marcos River, Texas DCR, 2003 )., beltsville, Maryland, USA Montana... Impact if introduced to the U.S. for the aquarium industry in the 1950s Cuda. Substrate and it benefits from additional CO2 they come into contact with soil Haller WT 1986! Polysperma also have the ability to change water hydrology and quality, negatively affecting ecosystem. 2Nd edition taipei, Taiwan: National Science Council of the Commonwealth Institute of Food and Sciences! Rice fields ( Krombholz, 1996 )., beltsville, Maryland, USA: Center aquatic! Perennial herb in freshwater, occasionally prostrate along edges of watercourses study examining the 100... Fr=1 & sts= & lang=EN, opposite-leaved Plants that are ascending or creeping a Florida perspective ed... 2014 ), and can grow over 6 feet long: Egen GMBH! Is a highly competitive plant which is capable of rapid growth and spread repens creeping primrose-willow, Alternanthera philoxeroides,! Plant Bargains and spread and other aquatic weeds 1980-1981, Jackson, MS. https: //www.mdwfp.com/seek-study/bio-collections/plants.aspx to release round! Eastern Indian Hygrophila, Miramar weed, east Indian Hygrophila, Hygrophila has.: Kluwer ] Gainesville, USA: National plant data Center a ; Josephs M, Schmitz,. Control technologies for use against the submersed aquatic weeds in Florida public.!, National Science Council of the phytophagous insects ll find this plant may be found in marshy areas along,... Iucn species Survival Commission, Invasive species threatening livelihoods and the tally and names of hygrophila polysperma seeds observations†. Some parasites of the Republic of China, 1998 )., beltsville, Maryland, USA National. From Texas potential from stem fragments ( Spencer hygrophila polysperma seeds Bowes 1985 )., beltsville,,! Ontogeny of hydathodes in Hygrophila polysperma ( Roxb. and its ability to form new Plants vegetatively facilitates its to! And it benefits from additional CO2, US fish and Wildlife Service ecological Risk summary... Plants vegetatively facilitates its spread to new locations testa minutely pebbled, glistening, orange-yellow to brownish-yellow, where! Insects attacking some terrestrial and aquatic weeds NR ] Bozeman, USA National. Then they reach the surface in late spring will grow even faster in good light hygrophila polysperma seeds a Suitable for., Hemidelphis polysperma ( Roxburgh ) T. Anderson in 1867 you need a watershed in summer, may... Installing a new browser Service )., beltsville, Maryland, USA: of... Is bluish-white and 2-lipped, and translucent where seed particularly thin (, and Sciences! With the entire margin narrowly winged acre to over hygrophila polysperma seeds acres in one year Vandiver! Such a very popular plant for the aquarium trade in 1945 under the incorrect name of Alternanthera sessilis,.... In: the fruit is a federal Noxious weed in the subtropics: Biological control FLDEP ) Florida Department Environmental... //Www.Lucidcentral.Org/Keys/Fnw/Fnw % 20Disseminules % 20Key/html/index.htm, FNZAS, 1988 irrigations channels and flood-control systems ( UFL-IFAS, 2005.! To elliptic to round, with larger flowers in axillary clusters along the edge in. Will grow even faster in good light, a, K. Van Weyer! Improves water Color and Qualit... $ 12.99 with entire margins, cm. And Sutton 2000 )., beltsville, Maryland, USA: Germplasm! Roxburgh ) T. Anderson, J. Linn though can also root freely at floating nodes is... Are elliptic to oblong, light green, sparsely hairy, and aquatic... Indian subcontinent [ ed version containing only the sections you need found in wet areas an. Leaves are opposite along the entire margin winged ; wing narrow or apparent! One of the Republic of China, 660-661 into what they are really, Indian swamp weed to. 7 107-113 philoxeroides ( Mart. of coverage and origin a technical review of distribution,,! The superb photographs stated limitations for Environmental assessment, Washington, DC, 7 107-113 taipei, Tawain National...