A New Terrestrial Genus and Species Within the Aquatic Liverwort Family Riellaceae (Sphaerocarpales) from Australia

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A new genus Austroriella Cargill & Milne and species Austroriella salta Milne & Cargill within the family Riellaceae is described. Known only from the type location at the margins of a saline lake in Western Australia it is the first record and description of a terrestrial species within this typically aquatic family. Female plants are typical of the family with a single reduced wing bearing a row of archegonia; male plants are not typical and are naviculate in form enclosing several rows of enclosed antheridia not unlike the males of Sphaerocarpos. Unlike Sphaerocarpos this species does bear oil bodies. Differences and affinities are also outlined briefly with closely related genera within the order Sphaerocarpales.

Anonymous 2013. Australia’s Bioregions (IBRA7) [April 2013]. http://www.environment.gov.au/parks/nrs/science/bioregion-framework/ibra.

Banwell A. D. 1951 A new species of Riella from Australia. Trans. Brit. Bryol. Soc. 1: 475-478.

Crandall-Stotler B., Stotler R. E. & Long D. 2009. Morphology and classification of the Marchantiophyta. In: B. Goffinet & A. J. Shaw (eds), Bryophyte biology, 2nded., pp. 1-54. Cambridge University Press, Cambridge.

Forrest L. L, Schill D., Hollingsworth M. L., Long D. G., Cargill D. C., Jolley H. M., Milne J. 2012. On Monocarpus International symposium of molecular systematics of bryophytes. (Poster). In: W. R. Buck, B.

Goffinet, A. Litt & D. Poli (eds), 3rd InternationalSymposium on Molecular Systematics of Bryophytes (June20-22, 2012), p. 79. New York Botanical Garden, New York.

Montagne C. 1852. Note sur le genere Riella et description d’une espèce nouvelle R. reuteri. Ann. Sci. Nat. (Paris) 18: 11-13.

Perold S. M. 1999. Studies in the Sphaerocarpales (Hepaticae) from southern Africa. 1. The genus Monocarpus and its only member, M. sphaerocarpus. Bothalia 29: 225-230.

Perold S. M. 2000. Studies in the Sphaerocarpales (Hepaticae) from southern Africa. 3. The genus Riella and its local species. Bothalia 30: 125-142.

Puche F. & Boisset F. 2009. On the occurrence of Riellaaffinis M.Howe et Underwood (Marchantiopsida, Sphaerocarpales) in the Sahara Desert (Africa). Cryptog. Bryol.30: 217-226.

Schelpe E. A. C. L. E. 1969. Three new records of Southern Hemisphere Bryophyta for South Africa. J. S. African Bot.35: 109-112.

Segarra-Moragues J. G., Puche F. & Sabovljević M. 2012a. Rediscovery of Riella alatospora (Riellaceae, Sphaerocarpales), an aquatic, South African endemic liverwort previously know from largely transformed type locality. S. African J. Bot. 79: 32-38.

Segarra-Moragues J. G., Puche F. & Sabovljević M. 2012b. Riella heliospora (Riellaceae) a new monoicous species of Riella subgenus Trabutiella from California. Syst. Bot. 37: 307-219.

Taylor J. 1954. A new Australian hepatic. Kew Bull. 9: 45-47.

Wigglesworth G. 1937. South African species of Riella, including an account on the development stages of three of the species. Journal of the Linnean Society of London, Botany 51: 309-332.

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