Abstract
We describe three new species of Radula subg. Volutoradula from above 3000 m in the tropical Andes: R. ilkiuborgesiae from Colombia (Dept. Santander), and R. longicarinata and R. magna from Bolivia (Dept. La Paz). The new species stand out by the unusual shape of their lobules. Full descriptions, illustrations as well as comments on the morphology, taxonomy, ecology and distribution of the new species are provided. The discovery of the new species adds three further endemic taxa to the rich bryophyte flora of the tropical Andes, the richest area for Radulaceae in the Neotropics.
References
- Barthlott, W., Hostert, A., Kier, G., Küper, W., Kreft, H., Mutke, J., Rafiqpoor, M.D. & Sommer, H. (2007) Geographic patterns of vascular plant diversity at continental to global scales. Erdkunde 61: 305–315. https://doi.org/10.3112/erdkunde.2007.04.01
- Cassini, A.H.G. de (1827) Gynoxys. In: Cuvier, F. (ed.) Dictionnaire des Sciences Naturelles, dans lequel on traite méthodiquement des différens êtres de la nature, considérés soit en eux-mêmes, d’après l’état actuel de nos connoissances, soit relativement à l’utilité qu’en peuvent retirer la médicine, l’agriculture, le commerce et les arts. F. G. Levrault & Le Normant, Paris, Strasbourg, ed. 2, p. 48.
- Churchill, S.P. (1996) Andean moss diversity and conservation: state of knowledge and requisites for the future. Anales del Instituto de Biológia de la Universidad Nacional Autónoma de México, Série Botánica 67: 169–176.
- Devos, N., Renner, M.A.M., Gradstein, S.R., Shaw, A.J. & Vanderpoorten, A. (2011) Molecular data challenge traditional subgeneric divisions in the leafy liverwort genus Radula. Taxon 60: 1623–1632. https://doi.org/10.1002/tax.606007
- Dumortier, B.C.J. (1822) Commentationes Botanicae. Ch. Casterman-Dieu, Tournay.
- Frahm, J.-P. & Gradstein, S.R. (1991) An altitudinal zonation of tropical rain forests using bryophytes. Journal of Biogeography 18: 669–678. https://doi.org/10.2307/2845548
- Gottsche, C.M., Lindenberg, J.B.W. & Nees, C.G. (1845) Synopsis hepaticarum, fasc. 2. Meissner, Hamburg, pp. 145–304.
- Gradstein, S.R., Churchill, S.P. & Salazar Allen, N. (2001) Guide to the Bryophytes of Tropical America. Memoirs of the New York Botanical Garden 86: 1–577.
- Gradstein, S.R. (1995) Diversity of Hepaticae and Anthocerotae in montane forests of the tropical Andes. In: Churchill, S.P., Balslev, H., Forero, E. & Luteyn, J.L. (Eds.) Biodiversity and Conservation of Neotropical Montane Forests. New York Botanical Garden, New York, pp. 321–334.
- Gradstein, S.R. (2021) The Liverworts and Hornworts of Colombia and Ecuador. Memoirs of the New York Botanical Garden 121: 1–723. https://doi.org/10.1007/978-3-030-49450-6
- Mutke, J. & Barthlott, W. (2005) Patterns of vascular plant diversity at continental to global scales. Biologiske Skrifter 55: 521–531.
- Nees von Esenbeck, C.G.D. & Montagne, C. (1836) Jungermanniearum herbarii Montagneani species. Annales des Sciences Naturelles, Botanique, sér. 2, 5: 52–72.
- Oliveira-da-Silva, F.R. & Ilkiu-Borges, A.L. (2020) On a new species of Radula Dumort. (Radulaceae, Marchantiophyta) from mountain ranges in the Atlantic Forest, Brazil. Nova Hedwigia 110: 287–292. https://doi.org/10.1127/nova_hedwigia/2020/0580
- Oliveira-da-Silva, F.R., Gradstein, S.R. & Ilkiu-Borges, A.L. (2020) A new species and a new variety of Radula Dumort. (Radulaceae, Marchantiophyta) from Brazil. Phytotaxa 454: 24–30. https://doi.org/10.11646/phytotaxa.454.1.2
- Oliveira-da-Silva, F.R., Gradstein, S.R. & Ilkiu-Borges, A.L. (2021) The genus Radula Dumort. (Radulaceae, Marchantiophyta) in Brazil. Nova Hedwigia 112: 69–163. https://doi.org/10.1127/nova_hedwigia/2020/0606
- Oliveira-da-Silva, F.R., Gradstein, S.R. & Ilkiu-Borges, A.L. (2022) Two new Neotropical taxa of Radula Dumort. (Marchantiophyta: Radulaceae) with bordered leaves. Phytotaxa 564: 095–103. https://doi.org/10.11646/phytotaxa.564.1.7
- Renner, M.A.M., Devos, N., Shaw, A.J. (2010) Radula splendida sp. nov. (Radulaceae: Marchantiophyta), a polymorphic species from New Zealand. Nova Hedwigia 90: 105–122. https://doi.org/10.1127/0029-5035/2010/0090-0105
- Renner, M.A.M., Devos, N., Patiño, J., Brown, E.A., Orme, A., Elgey, M., Wilson, T.C., Gray, L.J. & von Konrat, M.J. (2013a) Integrative taxonomy resolves the cryptic and pseudo-cryptic Radula buccinifera complex (Porellales, Jungermanniopsida), including two reinstated and five new species. PhytoKeys 27: 1–113. https://doi.org/10.3897/phytokeys.27.5523
- Renner, M.A.M., Devos, N., Brown, E.A. & von Konrat, M.J. (2013b) New records, replacements, reinstatements and four new species in the Radula parvitexta and R. ventricosa species groups (Jungermanniopsida) in Australia: cases of mistaken identity. Australian Systematic Botany 26: 298–345. https://doi.org/10.1071/SB13027
- Renner, M.A.M. (2015) Lobule shape evolution in Radula (Jungermanniopsida): one rate fits all? Botanical Journal of the Linnean Society 178: 222–242. https://doi.org/10.1111/boj.12279
- Renner, M.A.M., Gradstein, S.R., Ilkiu–Borges, A.L., Oliveira-da-Silva, F.R. & Promma, C. (2022) Molecular and morphological evidence support the recognition of three genera within Radulaceae (Porellales: Marchantiophyta). Bryophyte Diversity and Evolution 45: 95–118. https://doi.org/10.11646/bde.45.1.7
- Ruiz, H. & Pavón, J. (1794) Flora peruvianae et chilensis prodromus. G. de Sancha, Madrid.
- Spruce, R. (1884) Hepaticae Amazonicae et Andinae. Transactions & Proceedings of the Botanical Society of Edinburgh 15: 1–590.
- Stephani, F. (1891) Hepaticae africanae. Hedwigia 30: 201–217.
- Stephani, F. (1910) Radula. Species hepaticarum 4. George & Cie, Genève & Bale, pp. 151–234.
- Yamada, K. (1993) Four new species of Radula. Journal of the Hattori Botanical Laboratory 74: 35–43.