Mannia triandra (Scop.) Grolle

Alegro, Antun, Šegota, Vedran, Rimac, Anja, Kiebacher, Thomas, Prlić, Dragan, Sedlar, Zorana, Vuković, Nina & Papp, Beata, 2019, New and noteworthy bryophyte records from Croatia, Cryptogamie, Bryologie 20 (2), pp. 5-13 : 10

Mannia triandra (Scop.) Grolle

SPECIMEN EXAMINED. — Croatia. Plitvice Lakes National Park, shaded limestone and dolomite rocks at Lake Gradinsko Jezero, 44°52’29.3’’N, 15°36’11.3’’E, 611 m a.s.l., 27.IX.2016, leg. and det. B. Papp, A. Alegro & V. Šegota s.n., BP(BP 52905/H, BP52915/H), ZA(ZA 45489).

It was found in small, earthy pits and cavities of vertical rocks, growing intermixed with Preissia quadrata . This locality is not situated in the Mediterranean part of Croatia. Some of the bryophyte species growing nearby were Campylophyllum halleri (Hedw.) M. Fleisch. , Fissidens taxifolius Hedw. , Gymnostomum calcareum , Leiocolea collaris , Lejeunea cavifolia (Ehrh.) Lindb. , Pseudoleskeella catenulata , Ptychostomum capillare (Hedw.) Holyoak & N. Pedersen , Ptychostomum zieri (Hedw.) Holyoak & N. Pedersen and Rhynchostegium murale (Hedw.) Schimp. This is the second reliable record of the species in Croatia, after its recent discovery on Mt Žumberačka Gora ( Alegro et al. 2015). Mannia triandra is a Circumpolar, Subarcticsubalpine element ( Düll 1999). It is widely distributed in Central and Southern Europe with its centre of distribution in the Alps ( Frey et al. 2006). Historically, it is known from Albania ( Baumgartner 1915; Bischler et al. 1980), Bosnia and Herzegovina ( Maly 1928), Bulgaria ( Ganeva & Natcheva 2003), Macedonia ( Zabijakin 1960), Montenegro ( Duda 1965), Romania ( Stefănuţ & Goia 2012), Serbia ( Sabovljević et al. 2004) and Slovenia ( Martinčič 2011), but in Bosnia and Herzegovina, Macedonia and Slovenia there are no recent records ( Sabovljević & Natcheva 2006; Ros et al. 2007). The species is known also from neighbouring Hungary ( Németh & Papp 2011) and Italy ( Aleffi et al. 2008). It is CR in Bulgaria ( Natcheva et al. 2006) and VU in Romania ( Stefănuţ & Goia 2012). Moreover, it is listed in the Bern Convention ( Council of Europe 1979), and is one of only four Croatian bryophytes listed on the Habitat Directive ( European Commission 2007).