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)
KUSNEZOW, N.J. (1896, 1898, 1904): Subgenus Eugentiana Kusn. generis Gentiana Tournef. Folia 1-10 cum tabulis 5. Acta Hort. Petrop. , 15: 161-320. LLOYD, M. - GHELARDI, R. J. (1964): A table for calculating the equitability component of species diversity. Ecology, 33:217-225. MAC ARTHUR, R. H. - MAC ARTHUR, J. W. (1961): On bird species diversity. Ecology, 42: 594-598. MARGALEF, R. (1956): Information y diversidad especifica an las cominudades des organismos. Inv. Pesq. 3:99-106. MARGALEF, R. (1969): Diversity and stability: a practical proposal and a model of interdependence. Brookhaven Symp. Biol., 22: 25-37. ODUM, E. P. (1969): The strategy of ecosystem development. Science, 164: 262-270. PATTEN, B. C. (1962): Species diversity in net phytoplankton of raritan Bay. J. Marine Research, 20:57-75. PIELOU, E. C. (1965): Species diversity and pattern. Diversity in the study of ecological succession. J. Theoret. Biol., 10:370-383. SCHELDON, A. L. (1969): Equitability indices: Dependence on the species count. Ecology, 50:466-467. SHANNON, C. E. - WEAVER, W. (196 3): The mathematical theory of communication. Univ. Illinois Press, Urbana, 117 pp. SOÓ, R. - JAVORKA, S. (1951): A magyar növényvilág kézikönyve. Akadémiai Kiadó, Budapest, 1120 pp. SOO, R. (1966): A magyar flora es vegetáció rendszertani növenyföldrajzi kézikönyve (Synopsis systematico geobotanico florae vegetationisque Hungáriáé). 2: 620-622. SZUJKÓ-LACZA, J. - SEN, S. (1976): Numerical evaluation of phenotypic relationship among Hungarian species of Gentiana. Acta Bot. Acad. Sei. Hung. , 22: (in press) SZUJKÓ-LACZA, J. - SEN, S. (1977): Correlation coefficient study in some character pairs of Hungarian Gentiana (Gentianaceae). Ann. Hist. -nat. Mus. Nat. Hung. , 69: (in press) WHITTAKER, R. H. - LEVIN, S.A. - ROOT, R. B. (1973): Niche, habitat and ecotype. Amer. Natur., 107:321-338. Received: 15 November 1976 DR SZUJKÓ-LACZA JULIA Botanical Department Hungarian Natural History Museum 1406 Budapest, Pf. 36. HUNGARY DR SUBIR SEN Department of Botany, Serampore College, Hooghly, West Bengal, INDIA
