http://dx.doi.org/)
Acanthus greuterianus from the Greek provinces of Kozanis, Florinis, Grevenon and Pellis is described as a species new to science, illustrated and compared with other members of the genus in Greece and SW Asia.
References
A. B. M. Enayet Hossain
1982:
Acanthaceae.
— Pp. 23–27 in:
P. H. Davis
(ed.), Flora of Turkey and the East Aegean Islands 7. — Edinburgh. Google Scholar
D. J. Wood
&
R. K. Brummitt
1989: Notes on Acanthus hirsutus Boiss. with a new key to Turkish taxa of Acanthus.
— Notes Roy. Bot. Gard. Edinburgh 46: 7–11. Google Scholar