o:3417 Structural changes of needle epicuticular waxes of Abies cephalonica in relation to natural weathering. en This is the first report on the structural changes of needle epicuticular waxes of A. cephalonica Loudon (Pinaceae) in relation to natural weathering. On the adaxial needle surface where stomata were absent, irregular, often rounded wax structures in form of granules were observed. The amount of granules increased with needle aging, so they were the most present on the oldest (three-year-old) needle. On the abaxial needle surface, where stomata were arranged in longitudinal rows forming two parallel bends, the main wax crystalloids were tubules with a tendency to concentrate within stomatal complexes and between them in the stomatal rows. Namely, tubules were quite dense with reticular aspect inside the stomatal pores, but sparsely present on the epistomatal rims and non-stomatal surfaces of the stomatal bands. In the course of time the tubules reached more advanced stages of agglomeration, thickening and fusion forming amorphous wax crusts. Therefore, both the tendency of amount of granules to increase and the degree of degradation of tubules into amorphous crusts as the result of natural ageing process were well-documented. 1552100 978-86-6275-140-9 (FSM) 91552100 SR.ID.68500489 2023-11-30T07:17:05.588Z 44 yes 46 Jelena Nikolić 0000-0002-2626-4405 46 Miroslav Miljković 46 Bojan Zlatković 46 Biljana M. Nikolić 0000-0002-2436-8294 46 Zorica Mitić application/pdf 1085343 https://unilib.phaidrabg.rs/o:3417 no yes 1 70 92000004 Book of abstracts, 14th Symposium on the Flora of Southeastern Serbia and Neighbouring Regions, Kladovo, Serbia, 26th to 29th June 2022 24 Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Institute for Nature Conservation, Belgrade 2022