Szekessy Vilmos (szerk.): A Magyar Természettudományi Múzeum évkönyve 53. (Budapest 1961)

Halász, M.: The microvegetation of the acrothermae of Harkány

species tend to appear in places further removed from the spouts of the thermal water, that is, in habitats of a relatively lower temperature. 5. The microvegetation of Harkány belongs to the Hapalosiphon* type. The most characteristic and most important place among the Cyanophyton species is occupied by Hapalosiphon laminosus, thereby defining the character and the biological type of the whole microvegetation of this acrothermal springgroup. From a phylogenetical point of view, Hapalosiphon laminosus is to be regarded as a primeval blue-green algal organism, whose appearance generally indicates the evolution of a specific Cyanophyton vegetation (Schwabe 1949). Its presence — according to recent researches (Micholic 1935) — is usually closely connected with the genetics of the thermal spring. Consequently, the latest thermal biological research assigns a specially important place to the Hapalosiphon laminosus-type of thermal microvegetations in the classification of natural thermal springs, — as apparent also in the works of Schwabe (1954), E 1 e n k i n (1914), Vouk (1937), and V o r o n i k i n (1929). It is highly important therefore that Hapalosiphon laminosus takes a decisive and most important place in the microvegetation of Harkány. 6. Surveying in a world-wide relation the data of the Harkány microvegetation as given above, and if endeavouring to assign Harkány and fix its proper place in the list of the thermae of the globe, we arrive at the conclusion, on the basis of the results given in the foregoing chapters, that Harkány belongs to the Hapalosiphon-type of the thermal springs. Consequently, Harkány, as one of the thermal wells of the world, must be placed in the first category of V o u k's classification, or, in other words, in the second group of S c h w a b e's classification, — as these two classes are indeed identical. Harkány deserves to be regarded as one of those acrothermae of the world, which are worthy of the attention of the workers of thermal microbiology. Literature:Boye — Petersen, J.

: Fresh water Algae Iceland (The Bot. of Iceland, II, Nr. 7, 1923, p. 281 — 309). — Boye-Petersen, J. : Algae collected by Eric Hulten on the Swedish Kamtchatka Expedition 1920—22 especially from hot springs (Det. Danske Viedenskab. selskab. Biol. Meddelelser, 20, 1, 1946, p. 60—90). — Copeland, J. J. : YeUowstone thermal Myxophyceae (Annals. New-York Acad, of Sei., 36, 1936, p. 1 — 232). — Csaja g h i, G. : Der Schlamm der Thermalquellen von Harkányfürdo (Hidrol. Közl., 36, 1956, p. 294). — Cziráky, J. : Jelentés az Orsz. Balneol. Kut. Int. Hidrogeol. Oszt. 1952—53ban végzett gyógyforrások és kutak hőmérs. és vízhozam méréséről (Hidrol. Közi., 33, 1953, p. 91. ; 35, 1955, p. 11-12). - Drouet, Fr. & D a i 1 y, V. : (Butler Univ. Bot. Stud., 10, 1952, p. 221 ; 12, 1956, p. 12-45). — E 1 e n k i n, A. A. : Über die thermophilen Algenformationen (Bull. Jard. Imp. Bot. Petersburg, 14, 1914, p. 62 — 110). — E 1 e n k i n, A. A. : Die Süsswasseralgen Kamtschatkas (Abh. d. Kamtschatka Exped. von. Rjahusinski, Moskva, 1914, p. 78). — E m o t o, Y. & Y o n e d a, Y. : Bacteria and Algae of Hot Springs in Toyama prefecture (Acta Phytotaxonomica et Geobot., 12, 1942, p. 7 — 26). — F o r t i, A. : Myxophyceae (in De Toni' s Sylloge Algarum Patavii. Sylloge Myxophycearum, 5, 1907, p. 200). — F r é m y, P. : Remarques sur la morphologie et la biologie de l'Hapalosiphon laminosus Hang. (Ann. Protistol. Paris, 5, 1936, p. 175 — 200). — F r i t s c h, F. E. : The Structure and Reproduction of the Algae (Cambridge, II, 1952, p. 768 — 935). — Geitler, L. : Cyanophyceae (Blaualgen) (in Rabenh.'s Kryptog. Flora, Leipzig, 2. Aufl., 14, 1930—1932, p. 1 — 1090). — Geitler, L. : Diagnosen neuer Blaualgen von den Sunda Inseln (Arch. f. Hydrobiol. Stuttgart, Suppl., * In the present paper, I designate this species as Hapalosiphon laminosus (Kütz.) Hansgirg, instead of Mastigocladus laminosus Cohn ; partly beacause this is the earlier name of the genus used also in recent literature again (Schwabe 1949, F r é m y 1936), partly because this name expresses better the characters and systematical allocation of the species (F r i t s c h 1952), as shown already in the taxonomical discussion of the species in the preceding chapter.