tailieunhanh - Nutlet surface micromorphology of the genus Nepeta L. (Lamiaceae) in Turkey

Nutlet characters within the genus Nepeta L. are of taxonomic significance. In this study, the nutlet morphology of 39 taxa of Turkish Nepeta species was examined using both stereoscopic and scanning electron microscopy (SEM). | Turk J Bot 32 (2008) 103-112 © TÜB‹TAK Research Article Nutlet Surface Micromorphology of the Genus Nepeta L. (Lamiaceae) in Turkey Ayla KAYA1, Tuncay D‹RMENC‹2,* 1 Anadolu University, Faculty of Pharmacy, Department of Pharmaceutical Botany, 26470 Eskiflehir - TURKEY 2 Bal›kesir University, Necatibey Education Faculty, Department of Biology Education, 10100 Bal›kesir - TURKEY Received: Accepted: Abstract: Nutlet characters within the genus Nepeta L. are of taxonomic significance. In this study, the nutlet morphology of 39 taxa of Turkish Nepeta species was examined using both stereoscopic and scanning electron microscopy (SEM). According to surface ornamentations, 3 main types, smooth, partly smooth, and sculptured, and 7 subtypes, undulate-ridged, cellular, reticulate, protuberance, papillate, verrucate, and tuberculate, were defined and illustrated. In addition, the unknown nutlet features of N. conferta Hedge & Lamond, N. crinita Montbret & Aucher ex Bentham, and N. viscida Boiss. are given for the first time here in detail. It is clear that external nutlet characters, especially surface texture, could help in the classification of the species of the complex genus Nepeta in the future. Key Words: Nepeta, Lamiaceae, nutlet, micromorphology, SEM Türkiye’de Nepeta L. (Lamiaceae) Cinsinin Tohum Yüzey Mikromorfolojisi Özet: Nepeta L. cinsinin nutlet karakterleri taksonomik öneme sahiptir. Bu çal›flmada, Türkiye’de yay›l›fl› olan Nepeta türlerinin nutlet morfolojisi stereoskopik ve taramal› electron mikroskobu kullan›larak (SEM) incelenmifltir. Yüzey süs özelliklerine göre, düz, k›smen düz ve yüzeyi flekilli olmak üzere üç ana tip ve dalgal›-damarl›, gözenekli, a¤›ms›, küçük kabarc›kl›, papilli, si¤illi ve yumrulu olmak üzere yedi alttip tan›mlanm›fl ve foto¤raflar› verilmifltir. Ayr›ca N. conferta Hedge & Lamond, N. crinita Montbret & Aucher ex Bentham ve N. viscida Boiss.’n›n bilinmeyen nutlet özellikleri ilk kez ayr›nt›l› olarak burada .