Lagarosiphon major

• Common Names
• Description
• Biology
• Taxonomy
• Similar Species
• More Info
• Further Reading
• Notes

Common Names

Description

Family Hydrocharitaceae

Herbs, annual or perennial , caulescent or without evident stem, glabrous or pubescent , entirely submersed , with both submersed and floating leaves, or with submersed stolons and emergent leaves, in fresh, brackish , or marine waters; turions rarely present. Stems rhizomatous , creeping , with abbreviated erect axis at nodes, or erect, leafy, elongate . Leaves basal, alternate, opposite, or whorled , sessile or petiolate ; stipules sometimes present, forming tubular sheath around stem; blade margins entire or serrate; veins 1--many. Inflorescences axillary , terminal , or scapose , 1-flowered or cymose , subtended by spathe ; spathe a 2-fid bract or pair of opposite bracts. Flowers unisexual , staminate and pistillate on same plants or on different plants, often with rudiments of opposite type, or bisexual , actinomorphic , rarely slightly zygomorphic; perianth epigynous , free , mostly 6-parted, then differentiated into sepals and petals, rarely 3-parted, then petals absent in Thalassia and Halophila; stamens (0--) 2--many in 1 or more whorls (inner often staminodial), epigynous, distinct or ± connate ; pollen spheric, in monads or tetrads or in slender chains; ovary 0--1, if present, inferior, 2--6[--16]-carpellate, 1-locular or falsely 6--9-locular; placentation parietal . Fruits berrylike. Seeds many, fusiform , ellipsoid , ovoid , or spheric; seed coat glabrous, papillose , or echinate .

Genera 17, species ca. 76 (10 genera, 14 species in the flora ) : nearly worldwide.

Hydrocharitaceae, like other members of the Alismatidae, have one or more (fewer than 20) scales (intravaginal squamules ) in the axils of their leaves. These scales (or hairs in some taxa) secrete mucilage and are without any venation . The structures are often referred to as "squamulae intravaginales" or "intravaginal scales" in the literature.[1]

Physical Description

Habitat

Typically found at an altitude of 0 to 694 meters (0 to 2,277 feet).[2]

Biology

Growth

Sunlight: Sun Exposure: Full Sun .

Temperature: Cold Hardiness: 8a, 8b, 9a, 9b, 10a, 10b, 11. (map)

Taxonomy

Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: 15-Mar-2000.

Place of publication : Trans. Roy. Soc. South Africa 16:193. 1928

Name verified on 18-May-1995 by ARS Systematic Botanists. Last updated: 22-May-1997

Similar Species

Members of the genus Lagarosiphon

ZipcodeZoo has pages for 20 species, subspecies, varieties, forms, and cultivars in this genus:

L. alternifolia · L. cordofanum · L. cordofanus · L. crispus · L. densus · L. fischeri · L. hydrilloides · L. ilicifolius · L. madagascariense · L. madagascariensis · L. major (Curly Waterweed Lagarosiphon Major) · L. muscoides · L. nyassae · L. roxburghii · L. rubellus · L. schweinfurthii · L. steudneri · L. tenuis · L. tsotsorogensis · L. verticillifolius

More Info

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Further Reading

• Allan, H. H. B. et al. 1961–. Flora of New Zealand. (F NZeal)
• Arnold, T. H. & B. C. De Wet, eds. 1993. Plants of southern Africa: names and distribution. Mem. Bot. Surv. S. Africa no. 62. (Pl SAfr)
• Dyer, R. A. et al., eds. 1963–. Flora of southern Africa. (F SAfr)
• Harden, G. J., ed. 1990–1993. Flora of New South Wales. (F NSWales)
• Huxley, A., ed. 1992. The new Royal Horticultural Society dictionary of gardening. (Dict Gard)
• Parsons, W. T. & E. G. Cuthbertson. 1992. Noxious weeds of Australia. (Noxweed Aust)
• Weber, E. 2003. Invasive plant species of the world: a reference guide to environmental weeds. (Invasive Pl Spec)
• Ancibor, E. 1979. Systematic anatomy of vegetative organs of the Hydrocharitaceae. Bot. J. Linn. Soc. 78: 237--266.
• Catling, P. M. and W. G. Dore. 1982. Status and identification of Hydrocharis morsus-ranae and Limnobium spongia (Hydrocharitaceae) in northeastern North America. Rhodora 84: 523--545.
• Cook, C. D. K. 1982. Pollinating mechanisms in the Hydrocharitaceae. In: J.-J. Symoens et al., eds. 1982. Studies on Aquatic Vascular Plants. Brussels. Pp. 1--15.
• Godfrey, R. K. and J. W. Wooten. 1979. Aquatic and Wetland Plants of Southeastern United States:. Monocotyledons. Athens, Ga.
• Hartog, C. den. 1970. The Sea-grasses of the World. Amsterdam.

Notes

Contributors

• African Regional Workshop (Conservation and Sustainable Management of Trees, Zimbabwe) 1998. Pericopsis elata. In: IUCN 2006. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 20 October 2006.
• Barneby RC & Forero E, 1994/1995 (from ILDIS).
• Barneby RC & Grimes JW (Monograph 1996/97), 2001-05 (from ILDIS).
• Barneby RC and Forero E, 1994/1995 (from ILDIS).
• Behnke Nurseries, Potomac MD USA
• Bisby, F.A., Y.R. Roskov, M.A. Ruggiero, T.M. Orrell, L.E. Paglinawan, P.W. Brewer, N. Bailly, J. van Hertum, eds (2007). Species 2000 & ITIS Catalogue of Life: 2007 Annual Checklist. Species 2000: Reading, U.K.
• Brands, S.J. (comp.) 1989-2005. Systema Naturae 2000. The Taxonomicon. Universal Taxonomic Services, Amsterdam, The Netherlands. [http://sn2000.taxonomy.nl/Taxonomicon/]. Access date: Nov 23, 2005
• Brands, S.J. (comp.) 1989-2006. Systema Naturae 2000. The Taxonomicon. Universal Taxonomic Services, Amsterdam, The Netherlands. Accessed April 21, 2007.
• Brands, S.J. (comp.) 1989-2007. Systema Naturae 2000. The Taxonomicon. Universal Taxonomic Services, Amsterdam, The Netherlands. Accessed September 17, 2007.
• Carr, Gerald
• Chappill J, 2001-06 (from ILDIS).
• Computer Aided Identification of Phlebotomine sandflies of AmericasJan 2, 1997.
• Cristofolini G, 2001-06 (from ILDIS).
• Fantz PR, 1999 (from ILDIS).
• Fautin, Daphne G. (from Hexacorallians of the World).
• Fortunato RH, 2001-05 (from ILDIS).
• Global Biodiversity Information Facility. Accessed January 27, 2008. http://www.gbif.org Mediated distribution data from 2 providers.
• Hexacorallians of the World 2001.
• Heyn CC & Heller D 1991/1993 (from ILDIS).
• Heyn CC and Heller D 1991/1993 (from ILDIS).
• Home of the Xylariaceae 2006.
• Hopkins HF, 2001-03 (from ILDIS).
• ILDIS World Database of Legumes, 10, Nov 2005
• ILDIS World Database of LegumesNov 10, 2005.
• IOPI Global Plant Checklist 2005.
• Kirk P.M., 14-Sep-2005 (from Species Fungorum, Sep 2006).
• LepIndex: The Global Lepidoptera Names Index
• Lewis GP, 1994/1995 (from ILDIS).
• Light, Kris. East Tennessee Wildflowers
• Marlin, Bruce. CirrusImage.com.
• Newell CA, 1997 (from ILDIS).
• Nghia, N.H. 1998. Dalbergia entadoides. In: IUCN 2006. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 20 October 2006.
• Nielsen IC and Rico ML, 1994 (from ILDIS World Database of Legumes).
• Ocean Biogeographic Information System. Accessed March 01, 2006. www.iobis.org
• Ohashi H & Tateishi Y, 1996 (from ILDIS).
• Opler, Paul A., Harry Pavulaan, Ray E. Stanford, Michael Pogue, coordinators. Butterflies and Moths of North America. Bozeman, MT: Mountain Prairie Information Node. March 26, 2007.
• Orthoptera Species File Online, 2.5, 2006.
• Parhost World Database of FleasNov 2, 2005.
• Pasquet RS, 2001-06 (from ILDIS).
• Phyllachorales 2006.
• Pippen, Jeffrey S. Jeff's Nature Page. Accessed December 8, 2007.
• Podlech D, 1996 (from ILDIS).
• Polhill RM, 1993 (from ILDIS).
• Rhytismatales database 2006.
• Ross JH, 2001-01 (from ILDIS).
• Schrire BD, 1994-10 (from ILDIS).
• Sokoloff DD, 2001-03 (from ILDIS).
• Stirton CH, 2001-06 (from ILDIS).
• The Global Lepidoptera Names Index2, 12.2, 2005.
• The International Plant Names Index. Accessed Jan 19, 2007.
• The Virtual Field Herbarium.
• Thomson, Christian (from Diptera).
• USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network - (GRIN) [Online Database]. National Germplasm Resources Laboratory, Beltsville, Maryland. URL (April 28, 2008)
• USDA Natural Resources Conservation Service. Plant Characteristics Database. Accessed April 17, 2006.
• USDA, NRCS. 2005. The PLANTS Database, Version 3.5 (http://plants.usda.gov). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
• van der Maesen LJG, 1993 (from ILDIS).
• van der Maesen, LJG, 2001-03 (from ILDIS).
• Vaz AMSF, 2001-05 (from ILDIS).
• World Checklist of Selected Plant Families
• World Conservation Monitoring Centre 1998. Adenanthera intermedia. In: IUCN 2006. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 20 October 2006.
• Zarucchi JL, 1993 (from ILDIS).

Data Sources

Accessed through GBIF Data Portal February 02, 2008:

• Bundesamt für Naturschutz / Zentralstelle für Phytodiversität Deutschland, Bundesamt fuer Naturschutz / Zentralstelle fuer Phytodiversitaet Deutschland
• Conservatoire botanique national du Bassin parisien, Observations du Conservatoire botanique national du Bassin parisien.
• UK National Biodiversity Network, Botanical Society of the British Isles - Vascular Plants Database
• UK National Biodiversity Network, Botanical Society of the British Isles - Vascular plant data for Scottish Vice-counties
• UK National Biodiversity Network, Dorset Environmental Records Centre - Dorset Invasive Alien Plants - NBN South West Pilot Project Case Studies
• UK National Biodiversity Network, Environment and Heritage Service - EHS Species Datasets

Identifiers

• Biodiversity Heritage Library NamebankID: 2676730
• Catalogue of Life Accepted Name Code: Kew-308179
• Global Biodiversity Information Facility Taxonkey: 13818842
• Globally Unique Identifier: urn:lsid:ipni.org:names:431822-1
• GRIN Nomen Number: 316415
• Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 565981
• International Plant Names Index (IPNI) ID: 431822-1
• U.S.D.A. Plant Symbol: LAMA15
• Zipcode Zoo Species Identifier: 43937

Footnotes

1. Robert R. Haynes "Hydrocharitaceae". in Flora of North America Vol. 22. Oxford University Press. Online at EFloras.org. [back]
2. Mean = 88.660 meters (290.879 feet), Standard Deviation = 97.410 based on 1,789 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]

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