For example , a medieval Slavic settlement of Dubrava later formed the city of Dubrovnik ; the species of oak that grows in that area is Quercus ilex L .
Oak was an important tree in Slavic mythology ( and in Illyrian mythology ) .
A medieval Slavic settlement of Dubrava later formed the city of Dubrovnik ; the species of oak that grows in that area is Quercus ilex L .
Oak was an important tree in Slavic mythology ( and in Illyrian mythology ) .