Lake Nemrut caldera are the trees dwarf juniper ("Juniperus communis"), Norway maple ("Acer platanoides"), European mountain ash ("Sorbus aucuparia"), common buckthorn ("Rhamnus cathartica"), sessile oak ("Quercus petraea"), pedunculate oak ("Quercus robur"), white willow ("Salix alba"), and the shrubs coinwort cotoneaster ("Cotoneaster nummularius"), cherry plum ("Prunus divaricata"), grey willow ("Salix cinerea"), Greek juniper ("Juniperus excelsa"), breaking buckthorn ("Frangula alnus"), alder buckthorn ("Frangula alnus") and mahaleb cherry ("Prunus mahaleb"). Steppe-like vegetation is spread over wide areas in the caldera. Those are mainly species of milkvetch ("Astragalus"). Other subshrubs and herbaceous plants are prickly thrift ("Acantholimon"), sainfoin ("Onobrychis"), sheep's sorrel ("Rumex acetosella"), "Thymus", "Alyssum", sheep's
Sorbus aucuparia be applied to other species in "Sorbus" subgenus "Sorbus", and mountain ash may be used for several other distantly related trees. The species is unrelated to the true ash trees (genus "Fraxinus"), which also carry pinnate leaves or the species "Eucalyptus regnans", also called mountain ash, native to Tasmania and Victoria in southeastern Australia. "S. aucuparia" was previously categorized as "Pyrus aucuparia". The author citation "Sorbus aucuparia" L. belongs to Carl Linnaeus. "Sorbus aucuparia" occurs as a tree or shrub that grows up to between 5 and 15 m in height. The crown is loose and roundish or irregularly shaped