The taxonomy of the genus Bulbocodium , in which two European species, a smaller eastern (B. versicolor) and a more robust western (B. vernum) are included, has been controversial since the description of the eastern species in 1821. Nuclear encoded ribosomal DNA ITS1 and the entire chloroplast DNA ITS were sequenced from several European populations, from France to the Ukraine, and the leaf width of mature living individuals was measured and analysed by ANOVA and Tukey-test. Although the studied DNA regions proved to be invariable, leaf width shows extreme variability. We found no correlation between the leaf size of the individuals and the geographical position of the populations, and in addition, the sequenced DNA regions showed total uniformity. Thus, our results do not support the division of the genus Bulbocodium into two taxa, at least in the sampled area. The formerly described size variants can be treated taxonomically at the forma level.
Ascherson, P., Graebner, P. (1905) Synopsis der mitteleuropäischen Flora III . Verlag von Wilhelm Engelmann, Leipzig.
Graebner P. , '', in Synopsis der mitteleuropäischen Flora III , (1905 ) -.
Bădărău, A. S., Groza, G. H., Oncu, M., Peştina, C. (1997) Bulbocodium versicolor (Ker.-Gawl.) Spreng., element silvostepic sarmatic, în flora Câmpei Transilvanei. Studia Universitatis Babeş-Bolyai, Geographia 42 , 147–150.
Peştina C. , 'Bulbocodium versicolor (Ker.-Gawl.) Spreng., element silvostepic sarmatic, în flora Câmpei Transilvanei ' (1997 ) 42 Studia Universitatis Babeş-Bolyai, Geographia : 147 -150 .
Baldwin, B. G., Sanderson, M. J., Porter, J. M., Wojciechowski, M. F., Campbell, C. S., Donoghue, M. J. (1995) The ITS region of nuclear ribosomal DNA: A valuable source of evidence on angiosperm phylogeny. Annals of Missouri Botanical Garden 82 , 247–277.
Donoghue M. J. , 'The ITS region of nuclear ribosomal DNA: A valuable source of evidence on angiosperm phylogeny ' (1995 ) 82 Annals of Missouri Botanical Garden : 247 -277 .
Clusius, C. (1601) Rariorum Plantarum Historia . Plantin, Antverpiae.
Clusius C. , '', in Rariorum Plantarum Historia , (1601 ) -.
Clusius, C. (1605) Appendix ad Rariorum Plantarum Historiam. In: Exoticorum Libri Decem . Plantin, without page number.
Czerniakowska, E. (1935) Bulbocodium . In: Komarov, V. L. (ed.) Flora URSS . Vol. 4. Editio Academiae Scientiarium URSS, Leningrad, pp. 20–23. (In Russian).
Czerniakowska E. , '', in Flora URSS. Vol. 4 , (1935 ) -.
Doyle, J. J., Doyle, J. L. (1987) A rapid DNA isolation procedure for small amounts of fresh leaf tissue. Phytocemical Bulletin 19 , 11–15.
Doyle J. L. , 'A rapid DNA isolation procedure for small amounts of fresh leaf tissue ' (1987 ) 19 Phytocemical Bulletin : 11 -15 .
Hess, H. E., Landolt, E., Hirzel, R. (1976) Colchicum bulbocodium Ker.-Gawl. In: Flora der Schweiz und angrenzender Gebiete . Band 1. Birkhäuser Verlag, Basel und Stuttgart, pp. 545–546.
Hirzel R. , '', in Flora der Schweiz und angrenzender Gebiete , (1976 ) -.
Ker-Gawler, J. B. (1821) The Botanical Register . Vol. 7. Printed for James Ridgway, sp. no. 571, without page number.
Linnaeus, C. (1753) Species Plantarum . (1st ed.) Trattner, Vindobonae.
Linnaeus C. , '', in Species Plantarum , (1753 ) -.
Mayevskiy, P. F. (1954) Flora of the Central region of the European plant of USSR. G.I.S.L. (Gosud. Izdat. Selskh. Lit.), Leningrad (In Russian.)
Mayevskiy P. F. , '', in Flora of the Central region of the European plant of USSR. G.I.S.L. , (1954 ) -.
Marschall-Bieberstein, L. B. F. (1808) Flora Taurico-Caucasica . Charkouiae.
Martini, E. (1983) Note sulla distribuzione di « Bulbocodium vernum » L. nelle Alpi occidentali. Webbia 37 , 29–41.
Martini E. , 'Note sulla distribuzione di «Bulbocodium vernum» L. nelle Alpi occidentali ' (1983 ) 37 Webbia : 29 -41 .
Máthé, I., Tamássy, G. (1941) A few interesting plants of early spring at Érmellék. Botanikai Közlemények 38 , 182–183. (In Hungarian.)
Tamássy G. , 'A few interesting plants of early spring at Érmellék ' (1941 ) 38 Botanikai Közlemények : 182 -183 .
Menghini, A., Bencivenga, M. (1974) Nuova stazione italiana di « Bulbocodium versicolor » Spreng. Informatore Botanico Italiano 6 , 150–153.
Bencivenga M. , 'Nuova stazione italiana di «Bulbocodium versicolor» Spreng ' (1974 ) 6 Informatore Botanico Italiano : 150 -153 .
Menghini, A., Mincigrucci, G. (1976) Nuove stazioni di « Bulbocodium vernum L. subsp. versicolor (Ker-Gawler) Richter» in Umbria. Informatore Botanico Italiano 8 , 59–61.
Mincigrucci G. , 'Nuove stazioni di «Bulbocodium vernum L. subsp. versicolor (Ker-Gawler) Richter» in Umbria ' (1976 ) 8 Informatore Botanico Italiano : 59 -61 .
Nyárády, E. Gy. (1941–1944) Flora of Kolozsvár and its surrounding . Erdélyi Nemzeti Múzeum Növénytára, Kolozsvár (In Hungarian.)
Nyárády E. Gy. , '', in Flora of Kolozsvár and its surrounding , (1941 ) -.
Priszter, Sz. (1998) Two Bulbocodium species in Hungary. Kitaibelia 3 , 293 (In Hungarian.)
Priszter Sz. , 'Two Bulbocodium species in Hungary ' (1998 ) 3 Kitaibelia : 293 -.
Scharfetter, R. (1911) Bulbocodium vernum L., neu für die Flora der Ostalpen. Österreichische Botanische Zeitschrift 61 , 126–131.
Scharfetter R. , 'Bulbocodium vernum L., neu für die Flora der Ostalpen ' (1911 ) 61 Österreichische Botanische Zeitschrift : 126 -131 .
Soltis, D. E., Soltis, P. S., Nickrent, D. L., Johnson, L. A., Hahn, W. J., Hoot, S. B., Sweere, J. A., Kuzoff, R. K., Kron, K. A., Chase, M. W., Swensen, S. M., Zimmer, E. A., Shu-Miaw, C., Gillespie, L., Kress, W. J., Sytsma, K. J. (1997) Angiosperm phylogeny inferred from 18S ribosomal DNA sequences. Ann. Missouri Botanical Garden 84 , 1–49.
Sytsma K. J. , 'Angiosperm phylogeny inferred from 18S ribosomal DNA sequences ' (1997 ) 84 Ann. Missouri Botanical Garden : 1 -49 .
Soó, R. (1932) Critical comments auf new data to our knowledge on the flora of Hungary. Botanikai Közlemények 29 , 128–129 (In Hungarian.)
Soó R. , 'Critical comments auf new data to our knowledge on the flora of Hungary ' (1932 ) 29 Botanikai Közlemények : 128 -129 .
Sprengel, C. (1825) Bulbocodium . In: Linnaeus, C. (ed.) Systema Vegetabilium . Gottingae, p. 40.
Stefanoff, B. (1926) Monography of Colchicum L. Sbornik Bulgarsky Akademie Nauk Sofiya 22 , 1–100.
Stefanoff B. , 'Monography of Colchicum L ' (1926 ) 22 Sbornik Bulgarsky Akademie Nauk Sofiya : 1 -100 .
Tamássy, G. (1927) Flora of Hajdu Country and the free royal city of Debrecen . Debreczeni Ujság Nyomdája, Debrecen (In Hungarian).
Tamássy G. , '', in Flora of Hajdu Country and the free royal city of Debrecen , (1927 ) -.
Thompson, J. D., Higgins, D. G., Gibson, T. J., Clustal, W. (1994) Improving the sensitivity of progressive multiple sequence alignment through sequence weighting, position-specific gap penalties and weight matrix choice. Nucleic Acids Res. 22 , 4673–4680.
Clustal W. , 'Improving the sensitivity of progressive multiple sequence alignment through sequence weighting, position-specific gap penalties and weight matrix choice ' (1994 ) 22 Nucleic Acids Res. : 4673 -4680 .
Valentine, D. H. (1980) Bulbocodium . In: Tutin, T. G. et al. (eds) Flora Europaea . Vol. 5. Cambridge University Press, Cambridge, p. 25.
Valentine D. H. , '', in Flora Europaea. Vol. 5 , (1980 ) -.
Vinnerstein, A., Reeves, G. (2003) Phylogenetic relationships within Colchicaceae . Am. J. Botany 90 , 1455–1462.
Reeves G. , 'Phylogenetic relationships within Colchicaceae ' (2003 ) 90 Am. J. Botany : 1455 -1462 .
Wetschnig, W. (1992) Chromosomenzahlen Kärtner Gefäßpflanzen (Teil 4): Karyotypmorhologie von Bulbocodium vernum L. (Colchicaceae). Carinthia II 182 , 535–544.
Wetschnig W. , 'Chromosomenzahlen Kärtner Gefäßpflanzen (Teil 4): Karyotypmorhologie von Bulbocodium vernum L ' (1992 ) 182 (Colchicaceae). Carinthia II : 535 -544 .
White, T. J., Bruns, T. D., Lee, S., Taylor, J. W. (1990) Amplification and direct sequencing of fungal ribosomal RNA genes for phylogenetics. In: Innis, M. A., Gelfand, D. H., Sninsky, J. J., White, T. J. (eds) PCR Protocols: A Guide to Methods and Applications . San-Diego: Academic Press Inc., pp. 315–322.
Taylor J. W. , '', in PCR Protocols: A Guide to Methods and Applications , (1990 ) -.
Widder, F. (1939) Offene Fragen um die Lichtblumen-Zeitlose ( Colchicum bulbocodium Ker-Gawler). Carinthia II 129 , 86–95.
Widder F. , 'Offene Fragen um die Lichtblumen-Zeitlose (Colchicum bulbocodium Ker-Gawler) ' (1939 ) 129 Carinthia II : 86 -95 .
Zar, J. H. (1999) Biostatistical Analysis . 4th Edition. Prentice Hall International, Inc., London.
Zar J. H. , '', in Biostatistical Analysis , (1999 ) -.