Ptilostemon is a genus of thistle in the tribe Cardueae within the family Asteraceae. It includes 15 species native to the Mediterranean Basin and the Caucasus.

Species

The following species are recognised in the genus Ptilostemon:

  • Ptilostemon abylensis (Maire) Greuter – Morocco
  • Ptilostemon afer (Jacq.) Greuter – Turkey, Balkan Peninsula
  • Ptilostemon casabonae (L.) Greuter – France, Italy
  • Ptilostemon chamaepeuce (L.) Less. – eastern Mediterranean
  • Ptilostemon diacanthus (Labill.) Greuter – Turkey, Syria, Lebanon
  • Ptilostemon dyricola (Maire) Greuter – Morocco
  • Ptilostemon echinocephalus (Willd.) Greuter – Crimea, Turkey, Republic of Georgia
  • Ptilostemon gnaphaloides (Cirillo) Soják – France, Italy, Greece, Turkey, Libya
  • Ptilostemon × grandei (Petr.) Greuter (P. niveus × P. strictus) – Italy
  • Ptilostemon greuteri Raimondo & Domina – Sicily
  • Ptilostemon hispanicus (Lam.) Greuter – Spain
  • Ptilostemon leptophyllus (Pau & Font Quer) Greuter – Morocco
  • Ptilostemon niveus (C.Presl) Greuter – Italy
  • Ptilostemon × pabotii Greuter (P. chamaepeuce var camptolepis × P. diacanthus subsp. turcicus) – western Syria
  • Ptilostemon × parisiensis Greuter (P. afer × P. chamaepeuce var. camptolepis) – Syria
  • Ptilostemon rhiphaeus (Pau & Font Quer) Greuter – Morocco, Algeria
  • Ptilostemon stellatus (L.) Greuter – France, Italy, Greece, Albania, Croatia, Montenegro
  • Ptilostemon strictus (Ten.) Greuter – Italy, Greece, Balkan Peninsula
  • Ptilostemon × tauricola (Boiss. & Balansa) Greuter – Turkey

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