B. Papp szerk.: Studia Botanica Hungarica 30-31. 1999-2000 (Budapest, 2000)
Papp, Beáta, Ódor, Péter; Erzberger, Peter: Preliminary data about the present Hungarian local populations of rare European bryophytes
Old occurrences confirmed: Zala county, Balaton-felvidék, Mt Tátika at Zalaszántó. On soil in open basalt grassland facing NW, ca 300 m a. s. 1., 22.04.1999, leg. and det. Papp, B., Ódor, P. Earlier data from here: 03.05.1954. leg. and det. Boros, Á. - Zala county, Balaton-felvidék, Mt Gulács at Nemesgulács. On soil in open, SE facing basalt grassland, ca 360 m a. s. 1., 29.04.2000, leg. and det. Erzberger, P., Papp, B., Ódor, P. Earlier data: 02.05.1955, leg. and det. Boros, Á. New occurrence: Zala county, Balaton-felvidék, Szent György hill, on soil of SE facing open basalt grassland, ca 350 m a. s. 1., 13.08.1999. leg. Papp, B., Lőkös, L., Bérces, S., det. Papp, B. In each locality it was frequently mixed or associated with the following bryophytes: Phascum cuspidatum Hedw., Bryum argenteum Hedw., Bryum capillare Hedw., Pottia intermedia (Turn.) Fuernr., Mannia fragrans (Balb.) Frye et L. Clark, Riccia sorocarpa Bisch., Weissia iongifolia Mitt. Usually it grows in patches of 1-2 cm diameter. Frequently several patches can be found near to each other within a 1 m 2 square. In extended grasslands, as e.g. in Szent György hill, 5-10 m away from such a square, other groups of 2-5 patches can often be found. The population sizes of the species in the investigated localities can be seen in Table 1. The localities were visited in 1999 and 2000. As the life strategy of this species is annual shuttle (AS), it appears in spring, produces spores very quickly, then it dies in the dry season and in autumn it may appear again. The size of the population could be very variable in different years, because the presence of the species is strongly connected with the weather conditions as e.g. the time and quantity of rains. Table 1. Population size of Pyramidula tetragona in the investigated localities. Patch: ca 1 cm 2 dense turf of shoots probably growing from the same prothallium. Group: assemblage of closely occurring patches within ca 1 m 2 . Tátika Szent György hill Gulács Years 1999 21)00 1999 2000 2000 No. of patches 7 4 S 29 10 No. of groups 1 1 1 9 6 No. of sporophyte 66 19 76 246 84 In Tátika hill, the size of the population was smaller in 2000 than in 1999. Fewer patches were observed. In 1999 the population of Szent György hill was found late in August. Only the most abundant group of the population, which had survived the summer, was detected then. In April 2000 several new patches were found and this population proved to be the largest in the region. In 2000 the population of Gulács hill also was discovered. Scattered patches form this population.
