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• Floristic data from Lengyel–Hőgyész Natura 2000 site (SW Hungary)

  31–38

  István Vas

  István Zsolt Tóth

  Views:

  146

  This paper presents occurrence data of 169 taxa from the Lengyel–Hőgyész Natura 2000 site (HUDD20026) which is on the southern part of Tolna Hills, SW Hungary. Data were collected during three years (2015, 2016, 2017), on different sites annually. The presented data contribute to the distribution dataset of Atlas florae Hungariae. Regionally rare or sporadic species (e.g. Asplenium scolopendrium, Asplenium trichomanes, Polystichum setiferum, Doronicum hungaricum, Paris quadrifolia, Scilla vindobonensis) are enumerated. Presence of Epipactis leptochila subsp. neglecta and Platanthera chlorantha were not registered from this site before. Subspecies of Carex divulsa are also studied on this site – distribution of these infraspecific taxa have not been mapped recently in Hungary.

• The flora of Bolondvár (Central Hungary, Colocense)

  133-141

  Dániel Kovács

  Views:

  87

  A 0.26 km2 sized Natura 2000 area called Bolondvár, located in Central Hungary, near the village Mezőfalva was studied. It is used regularly as a meadow or sometimes as a pasture. Floristic data were collected between 2010 and 2013. The total number of taxa recorded was 362. The species diversity was high compared to other places of Hungary. There were 11 protected (e.g. Ajuga laxmannii, Astragalus asper, Cirsium boujartii, Inula germanica) and numerous locally rare species (e.g. Hieracium densiflorum, Lavatera thuringiaca, Orobanche lutea, Veronica austriaca).

• Dry oak woods on the Szentendre Island

  147-178

  Balázs Kevey

  Éva Irén Bőhm

  Views:

  128

  The phytosociological characteristics of the oak woods on the Szentendre Island were first studied 70 years ago. We conducted a follow-up study to determine the phytosociological relationships of theses woods and assess their possible changes over time. We found that these woods are most similar in their phytosociological characteristics to the closed pedunculate oak forests occurring in the high floodplain in the Szigetköz area (Melico nutantis-Quercetum roboris) along the Danube. Our results also showed a marked increase in the proportion of natural weeds, introduced species and invasive aliens in the studied woods.

• Current research results and overview of historic data of Cirsium brachycephalum Jur. in Tolna county, SW-Hungary

  75-79

  István Zsolt Tóth

  Borbála Dévényi

  Views:

  79

  The distribution of the thistle species Cirsium brachycephalum in Tolna county was studied as a part of the Hungarian National Biodiversity Monitoring System. Occurrence data of this endemic species of community importance having been listed as protected since 1993 were scarcely available for Tolna county. In addition to our most recent survey, this paper also provides an analysis of former literature data, and calls the attention that there is a possibility for revealing further valuable botanical information in the less surveyed areas of Tolna county.

• Hungarian localities of Himantoglossum adriaticum and its land-use history

  84–94

  Judit Bódis

  Views:

  164

  Himantoglossum adriaticum H. Baumann is a Natura 2000, CITES species and strictly protected plant in Hungary. During my field work (1992–2016) I realized some similarities in the characteristics of the habitats where the plant grows, so I wanted to know the land use history of the areas in question. The H. adriaticum population of Keszthely Hills was studied the longest time. There were annually 7–78 inflorescences between 1992–2016. Recently two further localities were found in Keszthely Hills. They grow in the edges of grasses used earlier as pasture, minor roadside verges and nearby abandoned vineyards. The largest population can be found in Sümeg region, majority of the individuals are along a paved road. Among the estimated 1000–2000 individuals 10 (2012) to 214 (2014) flowered. In Kőszeg, the lizard orchid grows in abandoned vineyards and in old traditional orchards. The maximum number of inflorescences was 165 (2016). In Bakony Hills its habitats are vineyards and orchards abandoned approximately 50 years ago. The size of H. adriaticum population here is nearly the same as in the Keszthely Hills. Four out of the five populations are growing on sites used as vineyard or orchard already in the years of the First Military Survey. The only exception is the population of Sümeg region. Every habitat is threatened by spontaneous forestation, but the species is able to find new habitats, so we do not worry about the drastic decline of the individuals in Hungary.

• White willow riparian forests along the upper Tisza River, Hungary

  78–100

  Balázs Kevey

  Csilla Barna

  Views:

  111

  Forests of the Tisza floodplain in the northwestern part of Hungary include white willow riparian forests (Leucojo aestivi-Salicetum albae) that are phytosociologically little studied. This study summarizes the characteristics of this community based on 25 phytosociological relevés. These forests grow mostly on mud and raw alluvial soil in the low-lying parts of the lower terraces of the floodplain. They are easily separated by their species composition and underdeveloped shrub layer from white poplar gallery forests (Senecioni sarracenici-Populetum albae)., which grow on higher lying ground with rather light sandy soil and typically possess a pronounced shrub layer. The understory of their stands may often host plants  that are rare or completely absent in other parts of the country, such as Cardamine amara, Cardamine flexuosa, Cardaminopsis arenosa, Carex pseudocyperus, Carex remota, Chrysosplenium alternifolium, Leucanthemella serotina, Leucojum aestivum, Oenanthe banatica, Scrophularia scopolii, Telekia speciosa, Vitis sylvestris. This community is classified in the „Salicenion albae-fragilis Kevey 2008” suballiance.