Zs. P. Komáromy szerk.: Studia Botanica Hungarica 12. 1977 (Budapest, 1977)
Szujkóné Lacza, Júlia; Sen, Subir: Distribution, diversity and equitability of the Hungarian species of Gentiana and Gentianella ciliata L. (Gentianaceae)
The study of the relative equitability values of the four species in relation to the highest number of factors gradients and flowering months, indicates G. cruciata to show the maximum, while G. ciliata the minimum values. It is interesting to note that altitude and habitat factors react quite differently with different species. Regarding precipitation all the species show more or less similar pattern of reaction except G. ascle piadea . The relative equitability values of G. pneumonanthe and G. cilia ta in relation to flowering time are very near to each other (Table 6). This result is quite in agreement with the plotted maps (2 and 4). Diversity in all cases are very high in G. ciliata in comparison with the other three species. Therefore, we could not find any factor which has a true regulating effect in this species. According to the available floristic work of SOO (1. c. ) and information in herbarium sheets, this plant occurs only in lime rich stones. Probably this represents a relict species in the Hungarian Middle Mountains. It is also possible that the distribution of G. ciliata is determined by some micro-edaphic factors connected with limestones. However, it has not been investigated by us. According to Maps 1 and 4, we have tried to find out the common factor which may be correlated both with G. ciliata and G. asclepiadea . A highly significant correlation was found between the two species in the mutual information frequency of the distribution of species and precipitation. 21 = 188, 5716 xxx . The investigated species in a given area are regulated by different factors (physical and biotic) in variable gradients and sometime one factor is substituted by other (e. g. G. pneumonanthe in annual precipitation). Acknowledgement: We are thankful to Miss Zsuzsanna Bunke for the preparation of the distributional map. SZUJKÓ-LACZA J. és SEN S.: A magyarországi Gentiana fajok és a Gentianella ciliata L. (Gentianaceae) elterjedése, diverzitása és equitabilitása A Növénytár herbáriuma (Herbarium Carpato-Pannonicum = HB) alapján összeállitottuk a Gentiana asclepiadea , G. cruciata , G. pneumonanthe és a Gentianella ciliata elterjedésének adatait, a Kárpátok és a Kárpát-medence területére, A herbáriumi lapok céduláin feltüntetett növénytársulás és tengerszintfeletti magassági adatok, illetve a lelőhelyek térképről leolvasható tengerszintfeletti magassági és évi átlagos csapadékmennyiség adatai alapján vizsgáltuk a fajok diverzitását külön-külön. A növényi sajátságok közül pedig a virágzási időtartam diverzitását számitottuk ki.
