| Ptilostemon afer |
| Authority | : | (Jacq.) Greuter, 1967 |
| Synonyms | : | Carduus afer Jacquin, 1797 |
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| Theth (Shkodër), Albania; 15 July 2017. | ||
| Ptilostemon chamaepeuce |
| Authority | : | (L.) Less. 1832 |
| Synonyms | : | Serratula chamaepeuce Linnaeus, 1753 |
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| Yaniklar (Muğla), Türkiye; 7 June 2022. | |
| Ptilostemon strictus |
| Authority | : | (Ten.) Greuter, 1967 |
| Synonyms | : | Cnicus strictus Ten. 1812 |
| Italiano | : | cardo stretto |
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| Svrke, Montenegro; 22 July 2019. | ||