Petaloid geophytes of Aydin

This study was carried out to determine the petaloid geophytes of Aydın. As a results of field work and herbarium studies conducted in AYDN, EGE, ISTE as well as literature studies a total of 174 taxa belonging to the 52 genera and 10 petaloid geophyte families were determined in Aydın province. Among 174 taxa, eight are endemics (4,5 %) while Ornithogalum exaratum Zahar. is new for Turkey, six taxa new for C1 and six taxa new for Aydın. The required confirmations were made on the presence of Narcissus serotinus L. ve Tulipa clusiana DC. in Turkey. The recorded six taxa from research area has not been listed before in Türkiye Bitkileri Listesi. According to our results 12 commonly cultivated exotic petaloid geophytes are present in Aydın whereas 14 commonly cultivated native petaloid geophytes are selling in neighborhood markets. The floristic analysis of the research area showed that Orchidaceae (14 genera, 57 taxa) and Asparagaceae (11 genera, 32 taxa) are the two families having the largest number of petaloid genera and taxa. As far as the numbers of taxa within the genus are considered Ophrys (22 taxa) and Orchis (19 taxa) are the two genera having the largest number of taxa. Within the vegetation types maquis and forests are the two vegetation types having the largest number of petaloid taxa, respectively. The chorotype analysis of the floristic list showed that 86 taxa (54,08 %) are Mediterranean or East Mediterranean, 5 taxa (3,14 %) are Euro-Siberian, 6 taxa (3,77 %) are Irano-Turanian or Irano-Anatolia, 46 taxa (28,91 %) biregionals and 16 taxa (10,06 %). Among the 174 petaloid geophytes of Aydın, 23 are threatened. The threat categories of these taxa as follow: LC (13 taxa), VU (5 taxa), EN (2 taxa), NT (1 taxon), NE (1 taxon) and CR (1 taxon). Among the 164 petaloid geophyte species of Aydın, 70 species (42,68 %) are bulbous, 48 species (29,26 %) are tuberose, 24 species (14,63 %) rhizomatous and 22 species are (13,41 %) cormose. The ninety percent of petaloid geophytes flowers in spring, whereas the rest in autumn. Among the 164 petaloid geophyte species that grow in researh area, 45 species grow only on limestone, 44 species grow only on metamorphic rocks and 75 species grow both geological substrates.