Araştırma alanı Pazaryeri (Bilecik) ve çevresini kapsamakta olup Davis'in kareleme sistemine göre A2 ve B2 kareleri içinde yer almaktadır. 2013-2014 yılları arasında araştırma alanından floranın belirlenmesi için 2472 adet bitki örneği toplanmıştır. Toplanan bitki örnekleri herbaryum tekniklerine uygun olarak preslenip kurutulmuştur. Floristik liste APG III sistemi esas alınarak düzenlenmiştir. Yapılan teşhisler sonucunda çalışma bölgesinde; 61 familya, 312 cins, 532 tür ve tür altı damarlı bitki taksonu tespit edilmiştir. Araştırma alanındaki bitki taksonlarının fitocoğrafik bölgelere dağılımı ise şöyledir; %9.09'u İran-Turan, %12.50'i Akdeniz ve %10.79 Avrupa-Sibirya elementi. Çok bölgeli veya fitocoğrafik bölgesi bilinmeyenlerin oranı ise % 67.61'dir. Bölgedeki endemizm oranı %9.19'dur.
Noccaea birolmutlui Özgişi & Özüdoğru is described as a new species from Kızıldağ National Park, Isparta, in SW Anatolia. It resembles N. ochroleuca but can be readily distinguished by several morphological characters including shape and size of basal/stem leaves, fruit shape, style length, ovule number etc. Nuclear-encoded ribosomal internal transcribed spacer (ITS) region based phylogeny proved that this species clearly differs than N. ochroleuca and these two species belong to different clades in Noccaea s.str. Diagnostic characters, a description, detailed photos and taxonomic comments on the species are given. Morphological affinities and ITS based phylogenetic relationships of new species are discussed. Furthermore, the IUCN Red List category of N. birolmutlui is proposed as critically endangered (CR) due to its limited distribution.
Herein the taxonomical status of some poorly known Noccaea (Brassicaceae) species is revised. Moreover, the morphological, distributional and ecological properties of these species are updated. Some overlooked species in Turkey such as Noccaea versicolor and N. aptera are recollected and their descriptions emended and discussed. N. huber-morathii is also recollected from its type locality after its first collection. The description and distribution of N. huber-morathii are also updated. New distribution areas for N. tatiaae and N. aghrica, which have been insufficiently known species in Turkey, are also given.
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