L. Hably szerk.: Studia Botanica Hungarica 19. 1986 (Budapest, 1986)
Hably, Lilla: Analysis of leaf size of the Ipolytarnóc flora from a climatological point of view
nóc flora, these species would have to be omitted from the statistical analysis as no precise measurements could be taken. Such an action would, however, entail a loss of the larger leaves (the macrophyll category), leading us to a false conclusion as regards climate. In order to overcome this problem, approximate values were taken for there species, which does not lead to any problems as size categories are used anyway (Fig. 1). RESULTS Leaf-size distribution of the Ipolytarnóc flora is given in Tables 1 and 2. The microphyll type is predominant according to both methods. Nanophylous and macrophyll leaves occurred in equal numbers, whereas notophyll and mesophyll ones only in small proportion. The two extreme categories, i.e. leptophyll and megaphyll leaves, were completely absent. The other method which takes only length into consideration, works with fewer categories, thus pooling several size intervals. As a result of this the predominance of the microphyll category is even more striking, but the proportion of the notophyll and mesophyll leaves is also considerable. The range of variation of the various species is also worthy of mention. With the exception of the palms there is not a single species that occurs only in one single size category. The species occurring only once in the table, Daphnogene cinnamomifolia , Dryophyllum furcinerve, Elaeocarpus palaeolanceolatus , Laurophyllum pseudoprinceps. Magnolia dianae, M. mirabilis a re all represented by 2-6 specimens, so could they not be analysed statistically. Most of the species occurred in two adjacent size categories, one of them being consistently the microphyll interval. Rarely, only in two cases ( Laurophyllum heeri . Platanus neptunil, three size categories were also found. In these cases most of the specimens fell into the median size interval. Table 1. summary of leaf area for the sample sites in Ipolytarnóc Nanophyll Microphyll Notophyll Mesophyll Macrophyll 0.25-2.25 2.25-20.25 20.25-45.0 45.0-182.25 182.25-1640.2 1. Arbutus elegáns 1 1 2. CalamuB noszkyi 3. Cyclocarya cyclocarpa 1 53 4. Daphne oehningensis 3 2 5. Daphnogene bilinica 120 244 6. Daphnogene cinnamomeifolia 1 1 7. B. Daphnogene cinnamomifolia Daphnogene 1 polymorpha 1 13 9. Daphnogene spectabile 1 1 10. Dryophyllum furcinerve 2 11 . Elaeocarpus palaeolanceolatus 1 12. Engelhardtia orsbergensis 169 60 13. Laurophyllum heeri 5 8 14. Laurophyllum pseudoprinceps 3 15. "Lauras" primigenia 3 4 16. Laurus princeps 43 1 17. Litsea ipolytarno cziense 1 2 18. Magnolia dianae 6 19. Magnolia mirabilis 1
