Comparative Anatomical Leaf Analyses оf Carduus nutans and Carduus thoermeri from Bulgaria

Krasimir T. Todorov1*, Plamen S. Stoyanov1,2, Tsvetelina R. Mladenova3, Doychin T. Boyadzhiev4, Ivanka Zh. Dimitrova-Dyulgerova1,2

1 - University of Plovdiv" Paisii Hilendarski", Faculty of Biology, Department of Botany and Methods of BiologyTeaching, 24 Tzar Assen Str., Plovdiv 4000, Bulgaria
2 - Medical University of Plovdiv, Faculty of Pharmacy, Department of Pharmacognosy and Pharmaceutical Chemistry, 120 Bratya Bukston Blvd., Plovdiv 4000, Bulgaria
3 - University of Plovdiv "Paisii Hilendarski", Faculty of Biology, MSc in Medical Biology, 24 Tzar Assen Str., Plovdiv 4000, Bulgaria
4 - University of Plovdiv "Paisii Hilendarski", Faculty of Mathematics and informatics, Department of Applied Mathematics and Modelling, 24 Tzar Assen Str., Plovdiv 4000, Bulgaria
*Corresponding author:

Abstract. The present study provides a comparative anatomical leaf analysis of Carduus nutans L. and C. thoermeri Wienm., which belong to the Asteraceae family. Bifacial leaf structure, anomocytic and anisocytic types of stomatal apparatus and two types of trichomes (multicellular covering and glandular) were found on the leaves of both species. The quantitative anatomical characteristics varied considerably, however; basing on the statistical analyses, the most significant characteristics for distinguishing the two taxa are: the number of stomata in the abaxial epidermis, the number of capitated glandular trichomes and the number of multicellular covering trichomes in the upper (adaxial) and lower (abaxial) epidermis.
Key words: anatomical study, Carduus nutans, Carduus thoermeri, leaf, thistle.

Ecologia Balkanica, 2017, vol. 9, Issue 2, pp. 29-39
Article № eb.17112 [Full text - PDF]pdf

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