Androsace azizsancarii (Primulaceae) is described and illustrated as a new species from Bayburt Province in northeastern Anatolia, Turkey. Diagnostic morphological characteristics, a full description, and a distribution map are provided. It is morphologically closest to Androsace albana, A. multiscapa, and A. villosa, but it is easily distinguished from these species by indumentum, leaf, flower and seed characters.

Androsace azizsancarii specimens were collected from Bayburt Province (near the Rize border) in the northeastern Anatolia region, in 2020. Holotype specimen was deposited in the herbarium of İstanbul University (ISTE), and the isotypes were deposited at Ege University (EGE), Ankara University (ANK) and Bingöl University, Biology Department. All morphological measurements were performed on dried specimens using a millimetric ruler. A stereo-binocular microscope was used to examine the gross morphology of the new species. Plant species nomenclature follows were checked on The Plant List (2013) website. The Androsace specimens were compared with the relevant taxonomic literature (Pax and Knuth 1905, Grossheim 1967, Lamond 1978, Smith and Lowe 1997, Mabberley 2008, Schönswetter and Schneeweiss 2009, Boucher et al. 2012, Hu and Hao 2016, Dentant et al. 2018, Jacquemoud and Jordan 2020) and material in the herbaria of ISTE, Selçuk University (KNYA), EGE, Bingöl University, Biology Department, Nigde Ömer Halisdemir University, Çukurova University (CUEF), ANK, and Bolu Abant İzzet Baysal University (AIBU), and some digital herbarium materials were examined from the E, G, and K herbaria (acronyms according to Thiers 2020). Detailed morphological measurements were performed on the new species material and compared with its closely related species, Androsace albana and A. multiscapa, using a stereo-binocular microscope.

A total of 20 specimens of the new species were examined. At least 50 pollen grains and 50 mature seeds were measured using a light microscope and a scanning electron microscope (SEM). The pollen terminology was adopted from that of Punt et al. (2007), and classifications using the P/E ratio and shape followed those of Erdtman (1969). During the field studies, photographs of the living material of the new species and its related taxa were taken using a Canon digital camera (Ota City, Tokyo, Japan). The general terminology used by Baytop (1998) was adopted.

There are not any missing values. This article is just about new species.