Lectotypification of the name Chamaemelum heterolepis, the basionym of Tripleurospermum heterolepis and taxonomic notes on T. tempskyanum (Asteraceae)

Tripleurospermum heterolepis (equivalent to Chamaemelum heterolepis), whose specimens are referred to as syntypes, is a narrow Turkish endemic species assessed as Critically Endangered according to the IUCN categories. Tripleurospermum tempskyanum (equivalent to Chamaemelum tempskyanum) is known as endemic to Greece, but is also distributed in Turkey. In this study, the name C. heterolepis is lectotypified on a specimen deposited at LD. Additionally, a description of T. tempskyanum in the Turkish flora is presented, and its conservation status is indicated. The diagnostic morphological characters which distinguish T. tempskyanum from its close relatives are discussed.