de Candolle, Augustin Pyramus (1836). "Erigeron karvinskianum". Prodromus systematis naturalis regni vegetabilis. p. 285. Retrieved 2014-02-11. (De Candolle used neuter endings for the specific epithets of Erigeron, but the word is masculine, being derived from the Ancient Greek word γέρων, geron, old man.)