Flora of the settlement Lukh of Ivanovo Region

In the article the floristic data of Lukh, one of the ancient Ivanovo region settlements, are given. The present Lukh settlement flora consists of 402 vascular plant species from 4 classes, 76 families and 255 genera. Compositae – 53 species (13,2%), Rosaceae – 39 species (9,7%), Poaceae – 27 species (6,9%), Fabaceae – 23 species (5,7%), Cruciferae – 18 species (4,2%) are leading families of the flora. The basis of biomorphological structure of the Luch flora is made up by the perennial grass plants (233 species; 57,9%), arboreous plants include 60 species (14,9%), among which 23 species are trees, 33 species are shrubs. Geographical analysis ascertained prevalence of native species. The native component of Lukh flora comprises 247 species (61,6%), the аlien component – 153 species (38,4%). The adventivity index is 0,38 which is typical for the small towns and large settlements of the Upper Volga region. 2 rare species (Gerntiana pneumonanthe, Populus nigra) included in the regional red data book, some native (Thelypteris palustris, Juniperus communis, Dactulorhiza fuchii, Platanthera bifolia, Convallaria majalis, Carex pilosa, Trollius earopaeus, Daphne mezerum) and alien (Atriрlex patens, Symphytum x uplandicum, Hesperis matronalis, Veronica persica, Zizania latifolia) rare plant species are briefly characterized.