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. 2023 Mar 27;12(7):1468.
doi: 10.3390/plants12071468.

Marsupella lusitanica (Gymnomitriaceae, Marchantiophyta), a New Species of Sect. Ustulatae from Mountain Ranges of Portugal

Ronald D Porley  1 , David Bell  2 , Jan Kučera  3
Affiliations

Marsupella lusitanica (Gymnomitriaceae, Marchantiophyta), a New Species of Sect. Ustulatae from Mountain Ranges of Portugal

Ronald D Porley et al. Plants (Basel). .

Abstract

A new species of Marsupella sect. Ustulatae Müll. Frib. ex R.M. Schust. is described following an integrated morphological and molecular-phylogenetic study which examined the recently found dioicous plants growing epilithically on acidic substrates in several mountain ranges of Portugal between Peneda-Gerês in the north and Serra da Monchique in the extreme south. Employed molecular markers (plastid trnF-trnT region and nuclear ribosomal ITS) confirmed the distinctness of the lineage from other currently recognized species in the section, and furthermore, previously neglected diversity within M. sprucei (Limpr.) Bernet was signaled. Although not yet confirmed outside Portugal, the newly reported species is probably not rare in the region and has likely been overlooked as M. funckii (F. Weber & D. Mohr) Dumort. or M. profunda Lindb. in the past.

Keywords: European liverwort endemic; ITS; Marsupella; Portugal; integrative taxonomy; trnF–trnT.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Consensus tree from the Bayesian inference of concatenated ITS and trnF–trnT data, partitioned between ITS and trnF–trnT nucleotide data and standard data from indels coded by a simple coding method [19]. Accessions of Marsupella lusitanica are printed in bold. Support values representing posterior probabilities from Bayesian analysis are plotted above branches, while bootstrap support values from Maximum Likelihood analysis of the equally partitioned dataset appear below branches. Support values are shown only on branches receiving either PP > 0.9 or BS > 70. Branches which received maximum support from at least one of the analyses and accessions of Marsupella lusitanica appear in bold.
Figure 2
Figure 2
Marsupella lusitanica R.D. Porley & Jan Kučera (all from Porley s.n., paratype 5): (a) sterile shoot, wet; (b) male plant, wet; (c) leaves; (d) cells in mid-lobe region; (e) cross-section of stem. Line drawing by Nick Hodgetts.
Figure 3
Figure 3
Marsupella lusitanica R.D. Porley & Jan Kučera, habit microphotographs: (a) female plant with perianth (arrow) and sporophyte; (b) two male shoots; (c) section of gynoecium showing the perigynium, enlarged bracts, and a smaller perianth (arrow) inside; (d) two sterile shoots. (a,c) from Kučera 10623, paratype 7, (b) from Kučera 10685, paratype 8, (d) from holotype, Porley s.n.
Figure 4
Figure 4
Marsupella lusitanica R.D. Porley & Jan Kučera, detail microphotographs: (a–f) vegetative leaves; (g) stem cross-section; (h) basal cells; (i) mid-lobe cells showing the oil bodies; arrow to biconcentric oil body. (a–c,g) from holotype, Porley s.n., (d–e) from Kučera 10685, paratype 8, (f,h) from Kučera 10623, paratype 7, (i) from Porley s.n., paratype 3.
Figure 5
Figure 5
Dry habit of Marsupella lusitanica (paratype 1), showing the characteristic purplish black color, with Scapania compacta, Racomitrium heterostichum and Grimmia trichophylla. Photo by R.D. Porley, 1 March 2019.
Figure 6
Figure 6
North-facing syenite rock outcrops on the summit of Fóia, Serra de Monchique, type locality of Marsupella lusitanica, one of the micropopulations (paratype 3) arrowed. Photo by R.D. Porley, 19 January 2023.
Figure 7
Figure 7
Known distribution of Marsupella lusitanica. H denotes the locality of holotype, P1–10 correspond to localities of paratypes 1–10. Made with Natural Earth.
See this image and copyright information in PMC

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