In this study, Sonchus erzincanicus Matthews (Asteraceae) collected from Erzincan (Turkey) has been investigated by its leaf and stem anatomical features, pollen grain characteristics and ecological features. | Turk J Bot 30 (2006) 405-411 © TÜB‹TAK Research Note Morphological, Anatomical and Palynological Investigation on Sonchus erzincanicus Matthews (Asteraceae) Ali KANDEM‹R1, Serdal MAKBUL2,*, Zafer TÜRKMEN3, Murat YILMAZ4 1 Ataturk University, Faculty of Education, 24030, Erzincan - TURKEY 2Karadeniz Technical University, Faculty of Rize Arts & Sciences, Department of Biology, 53100, Rize - TURKEY 3Karadeniz 4Karadeniz Technical University, Faculty of Fisheries, 53100 Rize - TURKEY Technical University, Faculty of Forestry, 61080, Trabzon - TURKEY Received: Accepted: Abstract: In this study, Sonchus erzincanicus Matthews (Asteraceae) collected from Erzincan (Turkey) has been investigated by its leaf and stem anatomical features, pollen grain characteristics and ecological features. It is an endemic perennial herbs growing in slightly basic with low organic content soil. Stem cortex seen transparently is composed of parenchyma cells. The leaves are bifacial and have stomata cells that are anomocytic. The pollen type of the species is trizonocolporate. All anatomical studies including transverse sections of the stems and leaves and surface section of leaves are illustrated for the firs time. Key Words: Anatomy, ecology, palynology, Sonchus erzincanicus, Turkey Sonchus erzincanicus Matthews (Asteraceae)’un Anatomik, Morfolojik ve Palinolojik Özellikleri Özet: Bu çal›flmada, Erzincan (Türkiye)’dan toplanan Sonchus erzincanicus Matthews (Asteraceae) gövde ve yaprak anatomik özellikleri ile, polen karakterleri ve ekolojik özellikleri yönünden incelenmifltir. S. erzincanicus hafif bazik ve düflük organik madde içerikli topraklarda yetiflen çok y›ll›k ve endemik bir bitkidir. Saydam görünen gövde korteksi parenkima hücrelerinden oluflur. Yapraklar bifasial özellikte ve anomositik stoma hücrelerine sahiptir. Türün polen tipi trizonokolporatt›r. Gövdeden enine kesitler ile yapraktan enine ve yüzeysel kesitleri içeren tüm anatomik çal›flmalar ilk .
