Petalophyllum ralfsii
| Petalophyllum ralfsii | |
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| Species: | P. ralfsii
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| Petalophyllum ralfsii | |
Petalophyllum ralfsii, the petalwort,[1] is a liverwort of the order Fossombroniales.[2] It is a small green bryophyte that occurs in the Mediterranean region as far east as Turkey, and along the Atlantic coast of Europe as far as northwest Scotland.[3] It grows primarily on moist sand dunes.[4]
The plants are small, typically less than 15 mm long by 10 mm wide (0.6 in by 0.4 in), and thallose; that is, the plant is not differentiated into root, stem, and leaf. The thallus consists of a midrib flanked by two wings that bear erect, leaf-like lamellae on their dorsal surface.[4][5]
References
- ^ Edwards, Sean R. (2012). English Names for British Bryophytes. British Bryological Society Special Volume. Vol. 5 (4 ed.). Wootton, Northampton: British Bryological Society. ISBN 978-0-9561310-2-7. ISSN 0268-8034.
- ^ Crandall-Stotler, B.J., Stotler, R.E. and Long, D.G. 2009. Phylogeny and classification of the Marchantiophyta. Edinburgh Journal of Botany, vo. 66, no. 1, p. 155-198.
- ^ Rumsey, F.J., Vogel, J.C. and Russell, S.J. 2001. A study of genetic variation in the threatened hepatic Petalophyllum ralfsii (Wils.) Nees and Gottsche (Fossombroniaceae). Conservation Genetics, vol. 2, no. 3, p. 271-277.
- ^ a b "1395 Petalwort, "Petaolphyllum ralfsii"". Joint Nature Conservation Committee, U.K. Retrieved 4 September 2017.
- ^ Crandall-Stotler, B.J. 2017. "Bryophyte Flora of North America, Provisional Publication, Petalophyllaceae". Missouri Botanical Garden. Retrieved 4 September 2017.
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