Lemna trisulca

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Lemna trisulca
LemnaTrisulca.jpg
Scientific classification OOjs UI icon edit-ltr.svg
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; [1] ivy-leaved duckweed [2] ) 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 [3] ), except when flowering or fruiting. Also unlike other duckweeds, a large number of fronds remain attached to each other at a time.

Contents

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. [4]

The flowering fronds are smaller than the vegetative fronds and somewhat curl up from under the water to the surface to present the flowers [5] (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. LemnaTrisulca2.jpg
Lemna trisulca submerged beneath a pool of water.

This species is widely distributed in cool-temperate regions, including Great Britain and Ireland, [6] [7] Asia (Bangladesh, China (Northern, Western, Southern [Yunnan]), Taiwan, India (Eastern, Northern), Indonesia (Sumatra, New Guinea), Brunei, Japan, Malaysia, Myanmar, Papua New Guinea, Pakistan, Philippines); Europe; Oceania; N. America; and S. America. [8]

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) Blyxaaubertii var. echinosperma, Lemnatrisulca, and Najastenuis. APG: Acta Phytotaxonomica et Geobotanica xx: xxx-xxx.


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