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Lemna trisulca

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Species of flowering plant in the family Araceae

Lemna trisulca
Conservation status

Least Concern  (IUCN 3.1)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Alismatales
Family: Araceae
Genus: Lemna
Species: L. trisulca
Binomial name
Lemna trisulca
L.

Lemna trisulca L. (syn. Staurogeton trisulcus (L.) Schur; star duckweed; ivy-leaved duckweed) is a species of aquatic plants in the arum family Araceae. It has a subcosmopolitan distribution. Unlike other duckweeds, it has submerged rather than floating fronds (up to 12-14m below the surface), except when flowering or fruiting. Also unlike other duckweeds, a large number of fronds remain attached to each other at a time.

Description

The fronds usually grow submerged and are oblong-lanceolate in shape and are up to 14 mm long. They are blunt at the end and taper to a tail-like stalk at the other.

The flowering fronds are smaller than the vegetative fronds and somewhat curl up from under the water to the surface to present the flowers (to a casual look this may cause the flowering fronds to resemble reddened duckweeds more of the L. minor format with white flower spots, with obvious greener L. trisulca directly beneath); illustration photo of flowers.

Distribution

Lemna trisulca submerged beneath a pool of water.

This species is widely distributed in cool-temperate regions, including Great Britain and Ireland, Asia (Bangladesh, China (Northern, Western, Southern ), Taiwan, India (Eastern, Northern), Indonesia (Sumatra, New Guinea), Brunei, Japan, Malaysia, Myanmar, Papua New Guinea, Pakistan, Philippines); Europe; Oceania; N. America; and S. America.

References

  1. NRCS. "Lemna trisulca". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 2016-01-24.
  2. BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
  3. Pip, Eva; Simmons, Kent (1986). "Aquatic angiosperms at unusual depths in Shoal Lake, Manitoba-Ontario". The Canadian Field-Naturalist. 100 (3): 354–358. doi:10.5962/p.355648. hdl:10680/1293. ISSN 0008-3550.
  4. Parnell, J. and Curtis, T. 2012. Webb's An Irish Flora. Cork University Press. ISBN 978-185918-4783
  5. "Article in Limnologica April 2021".
  6. Clapham, A.R., Tutin, T.G. and Warburg, E.F. 1968. Excursion Flora of the British Isles. Cambridge University Press. ISBN 0 521 04656 4
  7. Hackney, P. (Ed.) 1992. Stewart & Corry's Flora of the North-east of Ireland. Institute of Irish Studies. The Queen's University of Belfast. ISBN 0 85389 446 9(HB)
  8. Ito, Y., T. Ohi-Toma, Nb. Tanaka, Nr. Tanaka, and J. Murata (umpubl.) New or noteworthy plant collections from Myanmar (8) Blyxa aubertii var. echinosperma, Lemna trisulca, and Najas tenuis. APG: Acta Phytotaxonomica et Geobotanica xx: xxx-xxx.

External links

Taxon identifiers
Lemna trisulca


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