two new species of the genus acantholimon boiss. (plumbaginaceae) from iran

Acantholimon bakhtiaricum and a. mirtadzadinii are described as new species from iran. a. bakhtiaricum belongs to the section microstegia and seems to be most closely related to a. austroiranicum. a. mirtadzadinii is from the section acantholimon and is similar to a. demawendicum. the new species are compared with close affinities. acantholimon sect. dracogyna mobayen is regarded as a synonym of acantholimon sect. microstegia bornm., the name dracogyna is a superfuous name.