Abstract
Morphological and anatomical characters and oil bodies were studied in 52 samples from Poland: 31 samples of typical Calypogeia muelleriana and 21 of a newly detected taxon with the use of isozyme markers. Plants of the new taxon morphologically resemble C. muelleriana, but differ from it significantly in 16 morphological traits as well as oil body characters. The greatest morphometric differences were found in the features connected with underleaves. The Mahalanobis distance based on the 47 quantitative traits, between the newly detected taxon and C. muelleriana was larger than that between C. muelleriana and C. azurea - a generally accepted species. The forward stepwise method of discriminant analysis showed that the set of diagnostic characters could be limited to five. A dendrogram constructed on the basis of the Euclidean distance, using the set of diagnostic characters, divided the examined samples into two groups that correlated with groups detected by genetic markers. Results of a multivariate analysis showed that five morphological traits are sufficient for a proper classification of plants to these two taxa.
References
Adamczak M., Buczkowska K., Bączkiewicz A., & Wachowiak W. 2005. Comparison of allozyme variability in Polish populations of two species of Ptilidium Nees (Hepaticae) with contrasting degrees of sexual reproduction. Cryptogamie, Bryology 26: 151-165.
Boisselier-Dubayle M. C., Jubier M. F., Lejeune B. & Bischler H. 1995. Genetic variability in the three subspecies of Marchantia polymorpha (Hepaticae): isozymes, RFLP and RAPD markers. Taxon 44: 363-376.
Boisselier-Dubayle M. C., Lambourdiere J. & Bischler H. 1998. The leafy liverwort Porella baueri (Porellaceae) is an allopolyploid. Plant Syst. Evol. 210: 175-197.
Buch H. 1935. Vorarbeiten zu einer Lebermoosflora Fenno-Scandias III. Die Gattung Calypogeia Raddi. Mem. Soc. F. Fl. Fenn. 11: 197-214.
Buczkowska K. 1999. Plastyczność morfologiczna-anatomiczna a problem gatunku u mszaków, na przykładzie pary krytycznych gatunków rodzaju Calypogeia Raddi: C. neesiana i C. integristipula. Ph. D Thesis, Department of Genetics, Adam Mickiewicz University, Poznan, Poland.
Buczkowska K. 2004a. The genus Calypogeia Raddi (Hepaticae, Jungermnniales) in Poland, biometrical analysis of morphological and anatomical variation. Nova Hedwigia 78: 121-146. DOI 10.1127/0029-5035/2004/0078-0121.
Buczkowska K. 2004b. Genetic differentiation of Calypogeia fissa Raddi (Hepaticae, Jungermanniales) in Poland. Plant Syst. Evol. 247: 187-201. DOI 10.1007/s00606-003-0156-9.
Buczkowska K. & Bączkiewicz A. New taxon of the genus Calypogeia (Jungermanniales, Hepaticae) in Poland. Acta Soc. Bot. Pol. (submitted).
Buczkowska K., Bączkiewicz A., Sawicki J. & Szczecińska M. 2009. Genetic differentiation within Calypogeia sphagnicola (Jungermanniales, Hepaticae) in Poland. Nowellia bryologica, special issue: 34-42.
Buczkowska K., Odrzykoski I. & Chudzińska E. 2004. Delimitation of some European species of Calypogeia Raddi (Hepaticae, Jungermnniales) based on cytological characters of oil bodies and multienzyme phenotype. Nova Hedwigia 78: 147-163. DOI 10.1127/0029-5035/2004/0078-0147.
Müller K. 1951-1958. Die Lebermoose Europas. In: Dr. L. Rabenhorst's Kryptogamen Flora von Deutschland, Österreich und der Schweiz, pp. 1161-1187. Akademische Verlagsgesellaschaft Geest & Portig K.-G., Leipzig.
Schuster R. M. 1969. The Hepaticae and Anthocerotae of North America east of the hundredth meridian, 2, pp. 98-215. Columbia University Press, New York-London.
Shlyakov R. N. 1979. Pieczenocznyje mchi sjeviera S. S. S. R. Vol. 2 Lofoziewyje (Hepatics of the northern territories of the USSR, Vol. 2, Lophoziaceae). Nauka, Leningrad.
Szweykowski J. & Krzakowa M. 1990. Peroxidases as taxonomic markers for some Calypogeia species collected in Poland. Nova Hedwigia 51: 241-255.
Szweykowski J. 1984. Species problems and taxonomic methods in Bryophytes. In: R. M. Schuster (ed.). The New Manual of Bryology, 2, pp. 1130-1171. The Hattori Bot. Lab. Nichinan, Miyazaki.
Szweykowski J. 2006. An annotated checklist of Polish liverworts and hornworts. In: Z. Mirek (ed.). Biodiversity of Poland, 4, 18-20 pp. W. Szafer Institute of Botany, Polish Academy of Sciences, Kraków.
Szweykowski J., Buczkowska K. & Odrzykoski I. J. 2005. Conocephalum salebrosum (Marchantiopsida, Conocephalaceae) a new Holarctic liverwort species. Plant Syst. Evol. 253: 133-158. DOI 10.1007/s00606-005-0301-0.
Warnstorf C. 1917. Die europäische Artgrupen der Gattung Calypogeia Raddi (1820). Bryolog. Zeitschr. 1: 97-114.