Khosrov Forest State Reserve pear ("Pyrus"), rowan ("Sorbus"). The southern steep sunny and dry slopes are covered by juniper sparse forests. Caucasian oak ("Quercus macranthera") forests can be found at an altitude of 1600–2300 m above sea level, which are rather dense in Khosrov district of the reserve known as "Trchnaberd". Oak forests are accompanied by ash ("Fraxinus excelsior", "Fraxinus rotundifolia"), rowan ("Sorbus aucuparia"), pear ("Pyrus"), maple ("Acer") and others. Bushes are abundant in the forests, represented by different species of wayfaring tree ("Viburnum lantana"), honeysuckle ("Lonicera"), rose ("Rosa"), hawthorn ("Crataegus"). The vegetation in the forests is rich in grass (family "Poaceae" L.). Mountainous
× Sorbaronia mitschurinii × Sorbaronia mitschurinii × "Sorbaronia mitschurinii, also known as Sorbaronia mitschurinii", is a domesticated species that was known until recently under the name "Aronia mitschurinii". It has been considered to be a group of cultivars of "Aronia melanocarpa", common ones including 'Viking' and 'Nero'. Genetic testing indicates it is likely a hybrid between "A. melanocarpa" and "Sorbus aucuparia" (mountain ash) that apparently originated in cultivation. It has been suggested that "Sorbaronia mitschurinii" is the product of Russian pomologist Ivan Vladimirovich Michurin's early 20th century experiments in wide hybridizations. This species is more robust than wild populations of "Aronia melanocarpa"; the