| Tolpis barbata (L.) Gaertn. | Kuzmanov, B. A., S. B. Georgieva & V. A. Nikolova. 1986. Chromosome numbers of Bulgarian flowering plants. I. Fam. Asteraceae. Fitologija 31: 71–74. | 86-87 | | 18 |
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| Tolpis barbata (L.) Gaertn. | Izuzquiza, A. 1990. Números cromosómicos para la flora Española. 618--619. Lagascalia 15: 295–296. | 90-91 | | 18 |
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| Tolpis barbata (L.) Gaertn. | Vogt, R. & C. Oberprieler. 1993. Chromosome numbers of north African phanerograms. I. Fl. Medit. 3: 187–210. | 92-93 | | 18 |
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| Tolpis barbata (L.) Gaertn. | Vogt, R. & C. Oberprieler. 1994. Chromosome numbers of North African phanerogams. IV. Candollea 49(2): 549–570. | 94-95 | | 18 |
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| Tolpis barbata (L.) Gaertn. | Valdés, B., R. Parra, R. Parrilla & C. Reina. 1998. Números cromosómicos de plantas de Marruecos. Lagascalia 20(2): 223–230. | 98-00 | | 18 |
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| Tolpis barbata (L.) Gaertn. | Vogt, R. & A. Aparicio. 1999. Chromosome numbers of plants collected during Iter Mediterraneum IV in Cyprus. Bocconea 11: 117–169. | 98-00 | 9 | |
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| Tolpis barbata (L.) Gaertn. | Talavera, S. 1981. In Numeros cromosomicos para la flora Espanola. 182-256. Lagascalia 10: 225–256. | 79-81 | | 18 |
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| Tolpis barbata (L.) Gaertn. | Gemeinholzer. 2005. New chromosome counts for some Lactuceae (Compositae). Compositae Newslett. 42: 43–46. | 04-06 | | 18 |
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