| Orlaya grandiflora (L.) Hoffm. | Rostovtseva, T. S. 1982. The chromosome numbers of some species of the family Apiaceae. III. Bot. Zhurn. SSSR 67 (2): 206–210. (In Russian). | 82-83 | | 20 |
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| Orlaya grandiflora (L.) Hoffm. | Rostovtseva, T. S. 1982. The chromosome numbers of some species of the family Apiaceae. III. Bot. Zhurn. SSSR 67 (2): 206–210. (In Russian). | 82-83 | | 22 |
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| Orlaya grandiflora (L.) Hoffm. | Van Loon, J. C. & A. K. V. Setten. 1982. IN: IOPB Plant chromosome number reports. Taxon 31: 589–592. | 82-83 | | 20 |
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| Orlaya grandiflora (L.) Hoffm. | Baltisberger, M. & E. Baltisberger. 1995. Cytological data of Albanian plants. Candollea 50(2): 457–493. | 94-95 | | 20 |
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| Orlaya grandiflora (L.) Hoffm. | Jav|0urková-Jarolímová, V. & J. Mĕsíček. 1992. In J. M|3esí|3ccek & V. Jav@0urková-Jarolímová, List of Chromosome Numbers of the Czech Vascular Plants. Academia, Praha. | 96-97 | | 20 |
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| Orlaya grandiflora (L.) Hoffm. | Albers, F. & W. Pröbsting. 1998. In R. Wisskirchen & H. Haeupler, Standardliste der Farn- und Blütenpflanzen Deutschlands. Bundesamt für Naturschutz & Verlag Eugen Ulmer, Stuttgart. | 98-00 | | 20 |
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| Orlaya grandiflora (L.) Hoffm. | Silvestre, S. 1978. Contribucion al estudio cariologicos de la familia Umbelliferae en la peninsula Iberica. 11. Lagascalia 7: 163–172. | 79-81 | 10 | 20 |
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| Orlaya grandiflora (L.) Hoffm. | Van Loon, J. C. & B. Kieft. 1980. In Chromosome number reports LXVIII. Taxon 29: 538–542. | 79-81 | | 20 |
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