Ruppia maritima

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Ruppia maritima
Ruppia maritima South Chungcheong, South Korea 27 Jun 2006.jpg
Ruppia maritima
Scientific classification e
Kingdom: Plantae
Clade: Angiosperms
Clade: Monocots
Order: Alismatales
Family: Ruppiaceae
Genus: Ruppia
Species: R. maritima
Binomial name
Ruppia maritima
L.

Ruppia maritima is a species of aquatic plant known by the common names beaked tasselweed, widgeon grass,[1] ditch-grass and tassel pondweed. Despite its scientific name, it is not a marine plant; is perhaps best described as a salt-tolerant freshwater species.[2] The generic name Ruppia was dedicated by Linnaeus to the German botanist Heinrich Bernhard Ruppius (1689-1719) and the specific name (maritima) translates to "of the sea".

Distribution[edit]

It can be found throughout the world, most often in coastal areas, where it grows in brackish water bodies, such as marshes. It is a dominant plant in a great many shoreline regions. It does not grow well in turbid water or low-oxygen substrates.[3]

Description[edit]

Ruppiamaritima.jpg

Ruppia maritima is a thread-thin, grasslike annual or perennial[2] herb which grows from a rhizome anchored shallowly in the wet substrate. It produces a long, narrow, straight or loosely coiled inflorescence tipped with two tiny flowers. The plant often self-pollinates, but the flowers also release pollen that reaches other plants as it floats away on bubbles.[4]

The fruits are drupelets. They are dispersed in the water and inside the guts of fish and waterbirds that eat them.[4] The plant also reproduces vegetatively by sprouting from its rhizome to form colonies.[4]

Taxonomy and nomenclature[edit]

On the basis of molecular phylogenetic analyses, a species complex, named R. maritima complex, had been discerned,[5] which was then extended to include eight lineages,[6] or nine lineages.[7]

A lectotype for R. cirrhosa is designated and the name is shown to be a homotypic synonym of R. maritima.[8]

Wetlands and wildlife[edit]

This plant is an important part of the diet of many species of waterfowl. In many areas, wetlands restoration begins with the recovery and protection of this plant.[9]

See also[edit]

References[edit]

  1. ^ English Names for Korean Native Plants (PDF). Pocheon: Korea National Arboretum. 2015. p. 614. ISBN 978-89-97450-98-5. Retrieved 24 December 2016 – via Korea Forest Service. 
  2. ^ a b Kantrud, H. A. (1991). Classification and Distribution - Wigeongrass (Ruppia maritima L.): A literature review. U.S. Fish and Wildlife Service.
  3. ^ Kantrud, H. A. (1991). Habitat - Wigeongrass (Ruppia maritima L.): A literature review. U.S. Fish and Wildlife Service.
  4. ^ a b c Kantrud, H. A. (1991). Development and Reproduction - Wigeongrass (Ruppia maritima L.): A literature review. U.S. Fish and Wildlife Service.
  5. ^ Ito Y., T. Ohi-Toma, J. Murata & Nr. Tanaka (2010) Hybridization and polyploidy of an aquatic plant, Ruppia (Ruppiaceae), inferred from plastid and nuclear DNA phylogenies American Journal of Botany 97: 1156-1167
  6. ^ Ito Y., T. Ohi-Toma, J. Murata & Nr. Tanaka (2013) Comprehensive phylogenetic analyses of the Ruppia maritima complex focusing on taxa from the Mediterranean Journal of Plant Research 126: 753-762
  7. ^ Ito, Y., T. Ohi-Toma, Nr. Tanaka, J. Murata, A.M. Muasya (2015) Phylogeny of Ruppia (Ruppiaceae) revisited: Molecular and morphological evidence for a new species from Western Cape, South Africa Systematic Botany 40: : 942-949
  8. ^ Ito, Y., T. Ohi-Toma, C. Nepi, A. Santangelo, A. Stinca, N. Tanaka, & J. Murata (2017) Towards a better understanding of the Ruppia maritima complex (Ruppiaceae): Notes on the correct application and typification of the names R. cirrhosa and R. spiralis Taxon 66: 167-171
  9. ^ Kantrud, H. A. (1991). Introduction - Wigeongrass (Ruppia maritima L.): A literature review. U.S. Fish and Wildlife Service.

External links[edit]