A Móra Ferenc Múzeum Évkönyve, 1968. (Szeged, 1968)

Gallé, László: The xerothermic lichen species cladonia magyarica VAIN

magyarioa. All the three authors gave also a good description of the plant mentioning, however, for want of a larger mass of matter for investigation, only the typical form and, sometimes, the f. pocilliformis. The literature concerning Cladonia magyarica and the f. pocilliformis, published until 1931, has been summarized by H. SANDSTEDE (1931 : 411). There are mentioned there not only the occurrence in Hungary but also several other ones abroad. The latter ones, however, may be accepted but with some reservation. Finally in 1961, I. PISÚT (Preslia, 33 : 369-374) treated of the relationship, occurrence, and distribution relations of Cladonia magyarica, in his monograph „Bemerkungen über Cladonia magyarica Vain., mit Berücksichtigung ihrer Verbreitung im Karpatenbereich", on the basis of a material resulting from several collections, first of all from the herbarium of the Botanical Collections of the National Museum of Natural Sciences in Budapest. In his monograph, the localities in Hungary are, anyway, indicated with several errata. Morphology of the Cladonia magyarica VAIN (a) External morphology (1) Primary thallus The Cladonia magyarica has two kinds of thalluses, consisting partly of squamae lying on the substratum and localized horizontally (thallus primarius), partly of podetia tanding vertically (thallus secundarius). The lacings (laciniae) of the primary thallus are middlesized, flattened, narrowly lobed. The length of lacings is (3)-5-6-(10) mm, their breadth is (l)-2-3,l mm. Their upper surface is greenish-grey, К + mildly yellowish, their lower side is white, showing no reaction with KOH. A young primary thallus is generally circular, the rims of the squamae located radiately being in touch; later on, anyhow, the thallus loses its circular shape and the sqamae become scattered. The thallus squamae are stiff if dry, their white lower side turns outside forming an excellent reflective surface. In wet state, the lacing are flatly spread, lying loosely on the substratum and bulging, sometimes, a little. The colour of the upper surface of squamae is brightly green, if young and wet, it is, however greyish-green, oil-green or oil brown, К + yellowish, if older and dry, and it is light brownish-red after the reagent being dried up. From the lower surface of squamae brown hypha bundles, rhizinae protrude assuring the adhesion to the loose substratum. They are as long as 2-3 mm. (2) Podetia The small podetia that are at first thin, and above a little broadened, are appearing in the young primary thallus. The full-developed podetia are similar to the funnels of the Cladonia pyxidata var. neglecta. Either they are simple, of a single chalice, or the chalices are rising storey-like from each other forming even triple floors like in case of the lichen species Cladonia verticillata. There may rise one sprout or around even more of them from the rims of chalices. The podetia grown in stories generally surpass the lenght of the lowest podetium. A fast growth, as a sign of regeneration, occurs first of all if the primary thallus and the lowest podetium are buried with sand mobilized by wind. 238