Abstract
A new species of Riccardia, R. meagheri, is described from mountainous areas of northern Myanmar. The new species differs from other species by 1) inner cells of main axis and branches in thallus cross-section flattened, much wider than high, irregularly shaped and with curved cell walls, 2) dorsal epidermis cells mamillose protruding forwards, ventral epidermal cells enlarged, but externally flat, not mamillose, 3) a winged, translucent, single-layered margin on both the main axis and branches, 4) the identical structure of the main axis and branches in thallus cross-section.
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References
- Bescherelle, É. & Massalongo, C. (1889) Muscinées. Mission Scientifique du Cap Horn, Botanique 5. Gauthier-Villars, Paris, pp. 201–312.
- Brown, E.A. & Braggins, J.E. (1989) A revision of the genus Riccardia S. F. Gray in New Zealand with notes on the genus Aneura Dum. Journal of the Hattori Botanical Laboratory 66: 1–132. https://doi.org/10.18968/jhbl.66.0_1
- Bruch, P. & Schimper, W.P. (1847) Bryologia Europaea. Vol. 1. Fasc. 41. Dicranodontium, Campylopus, Oncophorus. E. Schweizerbart, Stuttgart.
- Crum, H.A. (1971) Nomenclatural changes in the Musci. Bryologist 74: 165–174. https://doi.org/10.2307/3241832
- Furuki, T. (1991) A taxonomical revision of the Aneuraceae (Hepaticae) of Japan. Journal of the Hattori Botanical Laboratory 70: 293–397. https://doi.org/10.18968/jhbl.70.0_293
- Furuki, T. (1994) Taxonomic studies of Asiatic species of Aneuraceae (Hepaticae). III. Riccardia subgen. Thornoneura Furuki. Hikobia 11: 463–467.
- Furuki, T. (1995) Taxonomic studies of Asiatic species of Aneuraceae (Hepaticae) II. Riccardia subgen. Hyaloneura Schust. Journal of the Hattori Botanical Laboratory 78: 111–118. https://doi.org/10.18968/jhbl.78.0_111
- Furuki, T. (2006) Taxonomical studies of the family Aneuraceae (Hepaticae) based on the Philippine collections made by Dr. and Mrs. A. J. Sharp and Dr. Z. Iwatsuki. Journal of the Hattori Botanical Laboratory 100: 89–99. https://doi.org/10.18968/jhbl.100.0_89
- Gradstein, S.R. & Reeb, C. (2018) The genus Riccardia (Aneuraceae) in Colombia and Ecuador. Cryptogamie, Bryologie 39 (4): 515–540. https://doi.org/10.7872/cryb/v39.iss4.2018.515
- Gray, S.F. (1821) A Natural Arrangement of British Plants. Vol. 1. Baldwin, Cradock & Joy, London, 824 pp.
- Hässel, G.G. (1972a) Revisión taxonómica del género Riccardia (Hepaticae). Especies andinopatagonias y subantarticas incluyendo las Islas Juan Fernández, Malvinas, Georgias del Sur, etc. Revista del Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” e Instituto Nacional de Investigación de las Ciencias Naturales: Ciencias Botánicas 4 (1): 1–242.
- Hewson, H.J. (1970) The family Aneuraceae in Australia and New Guinea: II. The genus Riccardia. Proceedings of the Linnean Society of New South Wales (ser. 2) 95 (1): 60–121.
- Hooker, J.D. & Taylor, T. (1844) Hepaticae Antarcticae; being characters and brief descriptions of the Hepaticae discovered in the southern circumpolar regions during the voyage of H.M. Discovery ships Erebus and Terror. II. Species of the Falkland Islands, Cape Horn and of Kerguelen’s Land. London Journal of Botany 3: 454–481.
- Hooker, W.J. (1816) British Jungermanniae. Longman, Hurst, Rees, Orme & Brown, London, 20 pp., 84 pl.
- Hooker, W.J. (1818) Musci Exotici 1. Longman et al., London, viii pp. + 96 pl.
- Massalongo, C. (1885) Epatiche raccolte alla Terra del Fuoco dal Dott. C. Spegazzini nell’anno 1882. Nuovo Giornale Botanico Italiano 17 (3): 201–277.
- Nees von Esenbeck, C.G.D. (1838) Naturgeschichte der europäischen Lebermoose. Vol. 3. August Rücker, Breslau, 594 pp.
- Reeb, C. & Gradstein, R. (2020) A taxonomic revision of Aneuraceae (Marchantiophyta) from eastern Africa with an interactive identification key. Cryptogamie, Bryologie 41 (2): 11–34. https://doi.org/10.5252/cryptogamie-bryologie2020v41a2.
- Reeb, C., Lavocat Bernard, E. & Gradstein, S.R. (2022) An integrative taxonomic revision of Aneuraceae H.Klinggr. (Marchantiophyta) from Guadeloupe and Martinique, French West Indies. Cryptogamie, Bryologie 43 (8): 135–152. https://doi.org/10.5252/cryptogamie-bryologie2022v43a8
- Schiffner, V. (1898) Expositio Plantarum in itinere suo indico annis 1893/94 suscepto collectarum speciminibusque exsiccatis distriburarum, adjectis descriptionibus novarum. Series prima: Hepaticarum partem continens. Denkschriften der Kaiserlichen Akademie der Wissenschaften, Wien. Mathematisch-naturwissenschaftliche Klasse 67: 153–203.
- Schiffner, V. (1900) Die Hepaticae der Flora von Buitenzorg. Vol. 1. E. J. Brill, Leiden, 220 pp.
- Singh, D. & Singh, D.K. (2017) Two new species of Riccardia (Aneuraceae, Marchantiophyta) from Eastern Himalaya, India with notes on the genus in Sikkim. Taiwania 62 (1): 33‒42.
- Söderström, L., Hagborg, A., Konrat, M. von, Bartholomew-Began, S., Bell, D., Briscoe, L., Brown, E., Cargill, D.C., Costa, D.P., Crandall-Stotler, B.J., Cooper, E.D., Dauphin, G., Engel, J.J., Feldberg, K., Glenny, D., Gradstein. S.R., He, X., Heinrichs, J., Hentschel, J., Ilkiu-Borges, A.L., Katagiri, T., Konstantinova, N.A., Larraín, J., Long, D.G., Nebel, M., Pócs, T., Felisa Puche, F., Reiner-Drehwald, E., Renner, M.A.M., Sass-Gyarmati, A., Schäfer-Verwimp, A., Moragues, J.G.S., Stotler, R.E., Sukkharak, P., Thiers, B.M., Uribe, J., Váňa, J., Villarreal, J.C., Wigginton, M., Zhang, L. & Zhu, R.-L. (2016) World checklist of hornworts and liverworts. PhytoKeys 59: 1–828. https://doi.org/10.3897/phytokeys.59.6261
- Yin, X.B. (2017) A taxonomical revision of the Aneuraceae of China. Master dissertation, East China Normal University, 116 pp. [in Chinese]