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The Poaceae family, including grasses, comprises several cosmopolitan and allergenic species. The aim of this study was to determine the correlations between Poaceae pollen and Phl p 5 allergen concentrations in two cities with different geographical and climatic properties in Turkey. Pollen were collected from Burkard traps in Ankara and Zonguldak. Phl p 5 sampling was carried out between March and October in both 2015 and 2016 using a BGI900 Cascade High Volume Air Sampler (900 L/min.). The concentrations of Phl p 5 were measured by the enzyme-linked immunosorbent assay (ELISA) technique. The annual sum of Poaceae pollen (pollen index) during 2015-2016 was 5454 in Ankara and 4142 in Zonguldak. The total Phl p 5 concentration was 1309 pg/m in Zonguldak, whereas it was 8181 pg/m in Ankara over 2 years. About 90% of the allergen was found in the fraction with particulate matter (PM) > 10 μm in both cities. It was found that the main meteorological parameter which affected pollen and Phl p 5 was temperature in both stations. Rainfall was also found to be important for Zonguldak, due to its climatic and geographic properties. Lastly, we suggest that the primary wind direction, which is from the south of Zonguldak, could have a 'drift effect' for allergens because of the airborne pollen concentrations and the dates on which the allergen is released into the atmosphere. The wind direction may be an important factor in the distribution of allergen and pollen grains in stations, especially those with a hilly topography.

Oedibasis are closely related and form a strongly supported clade. However, Scaligeria is not grouped with these genera (Degtjareva et al., 2009, 2013; Hand et al., 2012). This result is in agreement with the treatment suggested by Kljuykov et al. (1976) and Pimenov (1983). Meanwhile, the taxonomic issues of Scaligeria still remain unresolved and studies continue. Scaligeria is widespread, with its presence ranging from Turkey, Cyprus, the southwestern Balkan Peninsula, and Greece eastwards to Syria, Lebanon, Israel, and Jordan with 25 species (Kyriakopoulos et al., 2014). The genus is represented in Turkey by seven species: the endemic S. capillifolia Post. in Adana located in the south of Turkey; S. lazica Boiss., endemic to the Eastern Black Sea region; and S. glaucescens (DC.