Plant material
Aerial parts of Hyssopus angustifolius M. Bieb. has been collected
from Veresk area (central Elburz Mountains Latitude: 35° 54’ N,
Longitude: 52° 59’ E, altitude: 1900 above sea level,), Iran through
spring 2010. The plant was authenticated at the Herbarium of
Department of Biology in the University of Mazandaran (voucher
specimen No 975).