Rediscovery of a rare North African endemic Odontites (Orobanchaceae): first record and variability from Tunisia

Odontites discolor subsp. ciliatus (syn. O. purpurea Don. subsp. ciliata (Pomel), an endemic Algerian taxon) is a member of Orobanchaceae family and the Odontites purpureus group has been recently first reported from North West of Tunisia, Kroumiria region. Morphological characteristics with illustrations are provided with notes on conspicuous differences in floral characters resulting in the distinction of two new different varieties.