Phelipanche hajastanica (Orobanchaceae), a New Species from Armenia

Phelipanche hajastanica Piwow., O. Sanchez & Moreno Mor., sp. nova (Orobanchaceae) is described from the Lesser Caucasus in the southeastern part of Armenia. The species grows in two small gorges in the Vayk mountain range, and parasitises Nepeta trautvetteri, a Transcaucasian endemic. A detailed description and illustrations are provided. We compare P. hajastanica with the morphologically most similar species P. pulchella, P. bungeana, and P. caesia, of which the first two are lectotypified here.