cryptogamie Bryologie 2019 ● 40 ● 22 DIRECTEUR DE LA PUBLICATION : Bruno David, Président du Muséum national d’Histoire naturelle RÉDACTEURS EN CHEF / EDITORS-IN-CHIEF : Denis LAMY ASSISTANTS DE RÉDACTION / ASSISTANT EDITORS : Marianne SALAÜN ([email protected]) MISE EN PAGE / PAGE LAYOUT : Marianne SALAÜN RÉDACTEURS ASSOCIÉS / ASSOCIATE EDITORS Biologie moléculaire et phylogénie / Molecular biology and phylogeny Bernard GOFFINET Department of Ecology and Evolutionary Biology, University of Connecticut (United States) Mousses d’Europe / European mosses Isabel DRAPER Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Universidad Autónoma de Madrid (Spain) Francisco LARA GARCÍA Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Universidad Autónoma de Madrid (Spain) Mousses d’Afrique et d’Antarctique / African and Antarctic mosses Rysiek OCHYRA Laboratory of Bryology, Institute of Botany, Polish Academy of Sciences, Krakow (Pologne) Bryophytes d’Asie / Asian bryophytes Rui-Liang ZHU School of Life Science, East China Normal University, Shanghai (China) Bioindication / Biomonitoring Franck-Olivier DENAYER Faculté des Sciences Pharmaceutiques et Biologiques de Lille, Laboratoire de Botanique et de Cryptogamie, Lille (France) Écologie des bryophytes / Ecology of bryophyte Nagore GARCÍA MEDINA Department of Biology (Botany), and Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Universidad Autónoma de Madrid (Spain) COUVERTURE / COVER : Extraits d’éléments de la Figure 2 / Extracts of the Figure 2 Cryptogamie, Bryologie est indexé dans / Cryptogamie, Bryologie is indexed in: – Biological Abstracts – Current Contents – Science Citation Index – Publications bibliographiques du CNRS (Pascal). Cryptogamie, Bryologie est distribué en version électronique par / Cryptogamie, Bryologie is distributed electronically by: – BioOne® (http://www.bioone.org) Cryptogamie, Bryologie est une revue en flux continu publiée par les Publications scientifiques du Muséum, Paris Cryptogamie, Bryologie is a fast track journal published by the Museum Science Press, Paris Les Publications scientifiques du Muséum publient aussi / The Museum Science Press also publish: Adansonia, Geodiversitas, Zoosystema, Anthropozoologica, European Journal of Taxonomy, Naturae, Cryptogamie sous-sections Algologie, Mycologie. Diffusion – Publications scientifiques Muséum national d’Histoire naturelle CP 41 – 57 rue Cuvier F-75231 Paris cedex 05 (France) Tél. : 33 (0)1 40 79 48 05 / Fax : 33 (0)1 40 79 38 40 [email protected] / http://sciencepress.mnhn.fr © Publications scientifiques du Muséum national d’Histoire naturelle, Paris, 2019 ISSN (imprimé / print) : 1290-0796 / ISSN (électronique / electronic) : 1776-0992 Novelties in the hornwort flora of Croatia and Southeast Europe Anja RIMAC Vedran ŠEGOTA Antun ALEGRO Nikola KOLETIĆ Nina VUKOVIĆ Department of Botany, Faculty of Science, University of Zagreb, Marulićev trg 20/II, 10000 Zagreb (Croatia) [email protected] (corresponding author) Submitted on 27 March 2019 | Accepted on 21 August 2019 | Published on 11 December 2019 Rimac A., Šegota V., Alegro A., Koletić N. & Vuković N. 2019. — Novelties in the hornwort flora of Croatia and South- east Europe. Cryptogamie, Bryologie 40 (22): 289-295. https://doi.org/10.5252/cryptogamie-bryologie2019v40a22. http://cryptogamie.com/bryologie/40/22 ABSTRACT Hornworts are globally the least diverse bryophyte group with respect to species number, with only eight species known from Europe. As for Croatia, only two species are listed in the available litera- ture, with most recent record being more than 85 years old. Our study carried out in Central Croatia KEY WORDS identified three new species for the hornwort flora, including two new genera – Notothylas Sull. ex. Anthoceros agrestis, Notothylas orbicularis, A. Gray and Anthoceros L. Our finding of very rare Natura 2000 species Notothylas orbicularis (Sch- Phaeoceros carolinianus, wein.) A. Gray, reported hitherto only from four Central European countries, is the first in Southeast rare species, Europe and the southernmost in Europe. Furthermore, we recorded Anthoceros agrestis Paton and Southeast Europe, Croatia, Phaeoceros carolinianus (Michx.) Prosk., which are either very rare or, more likely, overlooked and new records. understudied in Southeast Europe. RÉSUMÉ Anthocérotes nouvelles pour la flore de Croatie et du sud-est de l’Europe. Dans le groupe des bryophytes, les anthocérotes sont les moins nombreuses en terme de nombre d’espèces ; huit espèces seulement sont répertoriées en Europe. Pour la Croatie, seules deux espèces sont mentionnées dans la littérature disponible, l’observation la plus récente date de plus de 85 ans. Notre étude en Croatie centrale a permis d’identifier trois nouvelles espèces pour la flore des antho- MOTS CLÉS cérotes, dont deux nouveaux genres – Notothylas Sull. ex. A. Gray et Anthoceros L. C’est la première Anthoceros agrestis, Notothylas orbicularis, fois que la très rare Notothylas orbicularis, espèce Natura 2000, est signalée dans le sud-est de l’Europe Phaeoceros carolinianus, et il s’agit de sa station européenne la plus méridionale. Jusqu’à présent, elle était signalée dans quatre espèces rares, pays d’Europe centrale. En outre, nous avons observé Anthoceros agrestis Paton et Phaeoceros caroli- Europe du sud-est, Croatie, nianus (Michx.) Prosk., qui sont très rares ou plus probablement négligées et sous-étudiées dans le signalements nouveaux. sud-est de l’Europe. CRYPTOGAMIE, BRYOLOGIE • 2019 • 40 (22) © Publications scientifiques du Muséum national d’Histoire naturelle, Paris. www.cryptogamie.com/bryologie 289 Rimac A. et al. INTRODUCTION MATERIAL AND METHODS Hornworts are the smallest bryophyte group with respect to The field study was performed in April 2013 and August species diversity, with an estimated 200-250 species worldwide 2018 in the surroundings of Nebojan Village in the central (Villarreal et al. 2010), which is quite low in comparison to the part of Croatia. The area is rural with traditional households, liverworts and mosses, which have 7000-9000 (Konrat et al. hay meadows and arable land dominating the landscape. The 2010; Söderström et al. 2016) and 11 000-13 000, respectively climate in the area is temperate humid with warm summers (Magill 2010; Söderström et al. 2016). Considering hornwort (Filipčić 1998; Šegota & Filipčić 2003). Annual mean air species diversity across the world, the tropics are the richest, temperature is 11°C, while mean air temperatures in January particularly tropical Asia (60 spp.), the Indian subcontinent and August are 0.1 and 21.5°C, respectively. Annual precipi- (58 spp.) and the Neotropics (49 spp.) (Villarreal et al. 2010). tation in the area is 907.5 mm, ranging from 79.2 to 95.1 By contrast, only four genera with altogether eight species mm during the summer months (means 1949-2017, Croa- have been recognised in Europe so far – Anthoceros L. with tian Meteorological and Hydrological Service). Regarding four species, Phaeoceros Prosk. with two and Notothylas Sull. the pedology of the area, the most common soil types are ex. A. Gray and Phymatoceros Stotler, W. T. Doyle & Crand.- clayey-loamy and loamy soils. Stotl. with one species each (Hodgetts 2015). During the study, the habitats suitable for hornwort species From Southeast Europe, only five species from three were inspected and a list of bryophytes was made at localities genera have been reported – Anthoceros agrestis Paton, that housed the hornworts. Furthermore, available data on A. punctatus L., Phaeoceros laevis (L.) Prosk., P. carolinianus hornworts from the literature and herbaria were examined. (Michx.) Prosk. and Phymatoceros bulbiculosus (Brot.) Stot- The nomenclature of bryophytes follows Ros et al. (2007, ler, W. T. Doyle & Crand.-Stotl. (Sabovljević & Natcheva 2013). Collected specimens were deposited in herbarium 2006; Hodgetts 2015). ZA (Thiers 2019). As for Croatia, data on hornwort diversity can be obtained from several checklists (Pavletić 1955; Düll 1999; Sabovljević 2003; Sabovljević & Natcheva 2006; Ros et al. 2007; Hodg- RESULTS AND DISCUSSION etts 2015; Alegro & Šegota 2019), all of them listing only two species – Phaeceros laevis and Phymatoceros bulbiculosus. Identification of collected hornwort specimens revealed three These lists are compilations of old literature data, while no new national records, increasing the richness of Croatian recent records of these species have been made in Croatia. To bryophyte flora to 711 taxa – 544 mosses, 162 liverworts a considerable extent, this is a result of insufficient research and five hornworts. The newly recorded species are described into the bryophytes of Croatia and Southeast Europe, areas in detail below, while their distribution is shown in Fig. 1. that are recognized as less investigated than other parts of Europe (Sabovljević et al. 2011). Although significant pro- gress has been made during the past decade (e.g. Papp & Anthoceros agrestis Paton Sabovljević 2009; Papp et al. 2013a, b, c; Alegro et al. 2014, 2015, 2019), continuous reporting of new species SPECIMEN EXAMINED. — Croatia. Nebojan Village, open ground in a hazelnut plantation, 45.4818°N, 16.1976°E, 190 m a.s.l., 20.IV.2013, indicates that knowledge of bryophyte flora is still insuffi- leg. Rimac A., det. Rimac A. & Šegota V., ZA[ZA49732]; Ibidem, cient, highlighting the need for additional field surveys in open ground on the lawn in a yard, 45.4959°N, 16.2038°E, 176 Croatia. Regarding the