Botanica Pacifica

Taxonomic novelties

Botanica Pacifica. A journal of plant science and conservation Preprint
Article first published online: 28 NOV 2017 | DOI: 10.17581/bp.2017.06208

A new large-celled species of Plagiochila (Plagiochilaceae, Hepaticae) from the southern flank of the Russian Far East

Vadim A. Bakalin1 & Anna A. Vilnet2

1 Botanical Garden-Institute FEB RAS, Vladivostok, Russia
1 Polar-Alpine Botanical Garden-Institute of the Kola Science Center of RAS, Kirovsk, Russia

A new species of Plagiochila is described from cool-temperate Ussuri taiga zone in the Russian Far East using integrative morphological and molecular-genetic approach. Plagiochila sichotensis Bakalin et Vilnet sp. nov. (sect. Plagiochila) is characterized by totally entire leaves, relatively small size and, particularly, very large midleaf cells reaching 40–60 μm wide in the leaf middle. The latter feature distinguishes the new species from all known taxa of the genus and, among regional taxa, somewhat similar to the not evolutionary related Mylia. This epixylous taxon seems to be confined in its distribution to the low to middle elevation of mountains in the southern Sikhote-Alin Mts. The description, illustrations and discussion on the new species are provided.

Бакалин В.А., Вильнет А.А. Новый крупноклеточный вид Plagiochila (Plagiochilaceae, Hepaticae) с южной окраины российского Дальнего Востока. Новый вид Plagiochila описан из Уссурийской тайги, располагающейся на юге российского Дальнего Востока. Plagiochila sichotensis Bakalin et Vilnet sp. nov. (sect. Plagiochila) характеризуется цельными листьями, относительно мелкими размерами и, в особенности, крупными клетками листьев, достигающими в середине листа 40–60 мкм ширины. Последний признак отличает новый вид от всех известных таксонов рода и близок к значениям, наблюдаемым в эволюционно неродственном роде Mylia. По-видимому, этот эпиксильный таксон ограничен в распространении нижним и средним высотными поясами гор Сихотэ-Алиня. Приводятся описание, иллюстрации и отличительные признаки нового вида.

Keywords: Plagiochila, Hepaticae, the Russian Far East, taxonomy, flora, печеночники, российский Дальний Восток, таксономия, флора



s Bakalin V.A., E.V. Butorina & K.G. Klimova 2017. The Hepaticae and Anthocerotae of Kedrovaya Pad' Nature Reserve – an intact enclave of East Manchurian flora in Russia. Botanica Pacifica 6(1):23–29. CrossRef

Fedosov V.E., O.Yu. Pisarenko, V.A. Bakalin & E.A. Ignatova 2016. Venturiella sinensis (Erpodiaceae, Bryophyta) – an addition to the moss flora of Russia. Arctoa 25(2):364–368. CrossRef

Guindon, S., J.F. Dufayard, V. Lefort, M. Anisimova, W. Hordijk & O. Gascuel 2010. New algorithms and methods to estimate maximum-likelihood phylogenies: assessing the performance of PhyML 3.0. Systematic Biology 59:307–321. CrossRef

Hall, T.A. 1999. BioEdit: a user-friendly biological sequence alignment editor and analysis program for Windows 95/98/NT. Nucleic Acids Symposium Series 41:95–98.

Inoue, H. 1984. The genus Plagiochila (Dum.) Dum. in Southeast Asia. Academia Scientific Book Inc., Tokyo, 141 pp. + 76 Plates.

Keane, T.M., T.J. Naughton & J.O. McInerney 2004. ModelGenerator: amino acid and nucleotide substitution model selection. Available from: Last accessed: ## Nov 2017.

Kress, W.J. & D.L. Erickson 2007. A two-locus global DNA barcode for land plants: the coding rbcL gene complements the non-coding trnH-psbA spacer region. PLoS ONE 2, e508. CrossRef

Pattengale, N.D., M. Alipour, O.R.P. Bininda-Emonds, B.M.E. Moret & A. Stamatakis 2010. How many bootstrap replicates are necessary? Journal of Computational Biology 17:337–354. CrossRef

Patzak, S.D.F., M.A.M. Renner, A. Schaefer-Verwimp, K. Feldberg, M. Heslewood, D.F. Peralta, A. Matos de Souza, H. Schneider & J. Heinrichs 2016. A phylogeny of Lophocoleaceae-Plagiochilaceae-Brevianthaceae and a revised classification of Plagiochilaceae. Organisms, Diversity & Evolution 16:481–495. CrossRef

Renner, M.A.M., M. Heslewood, S.D.F. Patzak, A. Schaefer-Verwimp, J. Heinrichs 2017. By how much do we underestimate species diversity of liverworts using morphological evidence? An example from Australasian Plagiochila (Plagiochilaceae: Jungermanniopsida). Molecular Phylogenetic and Evolution 107:576–593. CrossRef

So, M.L. 2001. Plagiochila (Hepaticae, Plagiochilaceae) in China. Systematic Botany Monographs 60:1–214. CrossRef

Söderström, L., A. Hagborg, M. von Konrat, S. Bartholomew-Began, D. Bell, L. Briscoe, E. Brown, D.C. Cargill, D.P. Costa, B.J. Crandall-Stotler et al. 2016. World checklist of hornworts and liverworts. PhytoKeys 59:1–828. CrossRef

Stamatakis, A. 2006. RAxML-VI-HPC: Maximum likelihood-based phylogenetic analyses with thousands of taxa and mixed models. Bioinformatics 22:2688–2690. CrossRef

Tamura, K., D. Peterson, N. Peterson, G. Stecher, M. Nei & S. Kumar 2011. MEGA 5: Molecular evolutionary genetic analysis using maximum likelihood, evolutionary distance, and maximum parsimony method. Molecular Biology and Evolution 28:2731–2739. CrossRef

White, T.J., T. Bruns, S. Lee & J. Taylor 1990. Amplification and direct sequencing of fungal ribosomal RNA genes for phylogenetics. In: PCR protocols: a guide to methods and applications (M.A. Innis, D.H. Gelfand, J.J. Snisky & T.J. White, eds.), pp. 315–322. San Diego. CrossRef

© 2016-2017 Botanica Pacifica