L. Hably szerk.: Studia Botanica Hungarica 18. 1985 (Budapest, 1985)
Kordos-Szakály, Márta: Stratigraphical revision of some Hungarian Badenian-Sarmatian floras
where a is the number of attributes shared by both of the objects. b is the number of attributes present in one of the objects, but missing from the other. c is the number of attributes missing in the first, 05 ao 3L 5h ZH — uJ i Fig. 1. Dendrograms of the eight Hungarian Miocene flora a = Jaccard' s index for species, b = S^rensen' s index for species, c = Jaccard' s index for genera, d = SOTensen' s index for genera; 1= Buják, 2= Mikófalva, 3= Bánhorváti, 4= Sály, 5= Balaton, 6= Eger-Tihamér 7= Páris-valley, 8= Bertece-valley 2-10, 4= 1 specimen). GREGOR separated the following the genus name characteristic of the type group: but present in the other object. Both coefficients were computed for the species and the genera of the eight paleofloras examined. The results are shown in the from of a dendrogram on Fig. 2. The vertical axis here is the eight objects classified, while the horizontal axis is the degree of similarity. _ When evaluating the dendrogram, it •* seemed that the comparison of the species provided a more fruitful basis for comparison then that of the genera, because these are evidently more species than genera. Based on the species the following groups can be separated: Bánhorváti-Balaton, SályMikófalva, Paris-Bertece, while the floras of Buják and Eger-Tihamér seem independ, ent. However, cluster analysis is suitable D for the definition of the groups only and not chronology; therefore the above groups were ranged according to the sequence determined earlier (KORDOS-SZAKÁLY 1983) Fig. D. GREGOR-LEAF-TYPE ANALYSIS A rapid stratigraphical method valid £ for Central Europe was published by GREGOR in 1982. By the help of this method, the genera composing the flora, assigned into leaf-types selected on the basis of ecological and evolutionary principles, considered by different significance level can be assigned to flora types. The latter ones are suitable for characterizing a geohistorical period and J for correlating with climate types as well as the Neogene Mammal zones defined by MEIN (MN-zones). A detailed description of this method can be found in the relevant paper of GREGOR (1982). The advantage of the method lies in, that it excludes any subjectivity.Several genera are lumped into the leaf-type groups. The number of imprints leaf depending mainly on local factors are blunted by categories 1 to 4 (1 = specimen number over 109, 2= specimen number between 11-100, 3= specimen number between leaf-type groups, putting the "-oid" ending after a. cinnamomoid b. lauroid c. diospyroid d. taxodicoid e. myricoid f. juglandoid gace roi d h. leguminosoid i . quercoid k. tilioid 1. populoid m . carpinoid n . cornoid o. rosoid P. salicoid q. hydrophytoid r . typhoid s. smilacoid t. gingkoid u . comptonioid V . vi sc oid w. pinoid x. palmoid
