| Symphytum tuberosum L. | Markova, M. 1983. In IOPB chromosome number reports LXXX. Taxon 32: 509–510. | 82-83 | | 64 |
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| Symphytum tuberosum L. | Migra, V. 1982. Zytotaxonomische probleme ausgewahlter taxa der flora des Babia Hora-Bergmassivs (Gebirge Zapane Beskydy) I. Acta Fac. Rerum Nat. Univ. Comenianae, Bot. 29: 87–95. | 82-83 | | 96 |
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| Symphytum tuberosum L. | Murin, A. & J. Majovsky. 1982. Die Bedeutung der Polyploidie in der Entwicklung in der Slowakei wachsenden Arten der Gattung Symphytum L. Acta Fac. Rerum Nat. Univ. Comenianae, Bot. 29: 1–25. | 82-83 | | 32,96 |
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| Symphytum tuberosum L. | Seidenbinder, M. & R. Verlaque. 1985. Chromosome Number Reports LXXXVI. Taxon 34: 159–164. | 84-85 | | c.128 |
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| Symphytum tuberosum L. | Jaarsma, T. A., E. Lohmanns, H. Hendriks, T. Gadella & T. Malingré. 1990. Chemo- and karyotaxonomic studies on some rhizomatous species of the genus Symphytum (Boraginaceae). Pl. Syst. Evol. 169: 31–39. | 90-91 | | 64, 96, 120, 144 |
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| Symphytum tuberosum L. | Hruaovská-Osuská, L. 1988. Karyological study of some taxa of the flora of the northern part of Povăzsk@3y Inovec. Part I. Acta Fac. Rerum Nat. Univ. Comenianae, Bot. 35: 69–79. | 92-93 | | 96 |
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| Symphytum tuberosum L. | Montgomery, L., M. Khalaf, J. P. Bailey & K. J. Gornal. 1997. Contributions to a cytological catalogue of the British and Irish flora, 5. Watsonia 21: 365–368. | 96-97 | | 96 |
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| Symphytum tuberosum L. | Jav|0urková-Jarolímová, V. 1992. In J. M|3esí|3ccek & V. Jav@0urková-Jarolímová, List of Chromosome Numbers of the Czech Vascular Plants. Academia, Praha. | 96-97 | | 96 |
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| Symphytum tuberosum L. | Micieta, K. 1981. Zytotaxonomische probleme einiger Pflanzensippen des Javorniky-Gebirges. Acta Fac. Rerum Nat. Univ. Comenianae, Bot. 28: 95–104. | 79-81 | | 64 |
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