Cerastium tomentosum is excluded from Flora Graeca, there are so many other species in Attica:
Cerastium brachypetalum subsp. pindigenum (Lonsing) P.D. Sell & Whitehead
Cerastium brachypetalum subsp. roeseri (Boiss. & Heldr.) Nyman
Cerastium brachypetalum subsp. tenoreanum (Ser.) Soó
Cerastium dichotomum L.
Cerastium dubium (Bastard) Guépin
Cerastium glomeratum Thuill.
Cerastium glutinosum Fr.
Cerastium holosteoides Fr.
Cerastium semidecandrum L.
Cerastium candidissimum Correns
Cerastium cerastoides (L.) Britton
Cerastium comatum Desv.
Cerastium decalvans Schlosser & Vuk.
Cerastium illyricum Ard.
Cerastium illyricum subsp. brachiatum (Lonsing) Jalas
Cerastium illyricum subsp. crinitum (Lonsing) P.D. Sell & Whitehead
Cerastium ramosissimum Boiss.
Cerastium banaticum (Rochel) Steud.
Cerastium banaticum subsp. speciosum (Boiss.) Jalas
Cerastium brachypetalum Pers.
Cerastium brachypetalum subsp. atheniense (Lonsing) P.D. Sell & Whitehead
Cerastium tomentosum is excluded from Flora Graeca, there are so many other species in Attica:
Cerastium brachypetalum subsp. pindigenum (Lonsing) P.D. Sell & Whitehead
Cerastium brachypetalum subsp. roeseri (Boiss. & Heldr.) Nyman
Cerastium brachypetalum subsp. tenoreanum (Ser.) Soó
Cerastium dichotomum L.
Cerastium dubium (Bastard) Guépin
Cerastium glomeratum Thuill.
Cerastium glutinosum Fr.
Cerastium holosteoides Fr.
Cerastium semidecandrum L.
Cerastium candidissimum Correns
Cerastium cerastoides (L.) Britton
Cerastium comatum Desv.
Cerastium decalvans Schlosser & Vuk.
Cerastium illyricum Ard.
Cerastium illyricum subsp. brachiatum (Lonsing) Jalas
Cerastium illyricum subsp. crinitum (Lonsing) P.D. Sell & Whitehead
Cerastium ramosissimum Boiss.
Cerastium banaticum (Rochel) Steud.
Cerastium banaticum subsp. speciosum (Boiss.) Jalas
Cerastium brachypetalum Pers.
Cerastium brachypetalum subsp. atheniense (Lonsing) P.D. Sell & Whitehead