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Hosts and Distribution of Yellow Mistletoe, Loranthus europaeus Jacq. in Croatia

Yellow mistletoe, Loranthus europaeus Jacq., is a deciduous mistletoe species of the Loranthaceae family. To make a list of host species and map the distribution range of yellow mistletoe in Croatia, field research was carried out and the herbaria of the Faculty of Forestry and Faculty of Science of the University of Zagreb were examined. For mapping the distribution the MTB grid was used. 11 taxa (10 species and one cultivar) of the mistletoe host were found. The taxa belong to the families Fagaceae and Betulaceae. In Croatia yellow mistletoe occurs on all five autochthonous deciduous oak species: pedunculate oak (Quercus robur L.), sessile oak (Q. petraea (Matt.) Liebl.), turkey oak (Q. cerris L.), downy oak (Q. pubescens Willd.) and hungarian oak (Q. frainetto Ten.). Out of the allochthonous oaks two deciduous American species are infected with mistletoe: red oak (Q. rubra L.) and pin oak (Q. palustris Muenchh.). Apart from the mentioned species, yellow mistletoe also occurs on the cultivar of the pedunculate oak, Q. robur 'Fastigiata'. Yet another two host species also belong to the Fagaceae family, and these are: sweet chestnut (Castanea sativa Mill.) and common beech (Fagus sylvatica L.), whereas one species, common hornbeam (Carpinus betulus L.), belongs to the Betulaceae family. L. europaeus is distributed in the continental region of Croatia mostly in natural forests of the pedunculate and sessile oak. In natural forests of the continental region it also occurs on other autochthonous oak species. On the red oak L. europaeus occurs in forest cultures and parks, whereas on the pin oak it occurs only in parks. On the sweet chestnut it is distributed in the north-western part of Croatia, on the common beech it was found on two localities in natural forests, whereas on the common hornbeam it was observed in the arboretum Opeka. In the submediterranean region yellow mistletoe occurs on the downy oak.

yellow mistletoe; Loranthus europaeus Jacq.; Quercus spp.; Castanea sativa Mill.; Fagus sylvatica L.; Carpinus betulus L.; hosts; distribution; Croatia

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