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to entire decomposition. In the case of these species the earlier phase of disorganizational stage (41) in fact is similar to the resting stage (10), but this is not yet solved. References ANDREEVA, B. M. (1975): Rod Chlorella. — Leningrad. Nauka, p. 1-83. CLAUS, G. (1955): Algae and their mode of life in the Baradla cave at Aggtelek. — Acta Bot. Hung., 2: 1-25. DRAGANOV, S. J. & DIMITROVA, E. A. (1968): Fluorescent-microscopic determination of the amount of active algal cells in certain caves of the Western Balkan Range and its foothills. — Dokladi Bolg. Akad. Nauk, 21: 477-480. FOGG, G. E. (1953): The matabolism of algae. — London, p. 1—149. FŐTT, B. & NOVÁKOVÁ, M. (1969): A monograph of the genus Chlorella, the fresh-water species. — In: Studies in phycology, 10-74, Praha, Academia, p. 1-304. FRITSCH, F. E. (1948) : The Structure and reproduction of the algae, Vol. 1. — Cambridge, p. 1-791. KOL, E. (1966): Algal growth experiments in the Baradla cave at Aggtelek. —Intern. Speleol. (Biospeleologica Hungarica 21), 2: 457-474. KOMAROMY, ZS. P. (1976): Studies on terrestrial Chlorhormidium (Kütz.) Fott species (CJlotrichales) — Ann. Hist.-nat. Mus. Nat. Hung., 68: 39-44. PAPP-VÁRI, Á. (1959) : A szoplaki Ördöglyuk-barlang morfológiája ós genezise.—Karsztés barlangkutatási Tájékoztató, nov. : p. 7-13. Author's address: DK. ZSUZSA P.-KOMAROMY Botanical Department Hungarian Natural History Museum H-1406 Budapest, Vajdahunyadvár, pf. 36 Hungary