Constantinidis, T., Kalpoutzakis, E. & Kougioumoutzis, K. (2015)

The rediscovery of Stachys virgata (Lamiaceae), a rare endemic of Peloponnisos, Greece: taxonomy, distribution, karyology and conservation

. Phytotaxa 218 (3): 241–252. https://doi.org/10.11646/phytotaxa.218.3.3