Na blago valovitim istočnim obroncima Psunja razvijeni su suhi brdski travnjaci, koji predstavljaju jedan od najugroženijih oblika vegetacije, a bili su predmet ovog istraživanja. Teren je blago nagnut prema jugoistoku, južne je ekspozicije, nadmorska visina oko 400 m. Cilj istraživanja bio je utvrditi brojnost i raznolikost samonikle vaskularne flore travnjaka na području Rudine. Floristička istraživanja vršena su 2003., 2008., 2016. i 2017. godine. Na površini od oko 2500 m2 popisane su i determinirane biljne svojte, određena njihova pripadnost porodicama, flornim elementima i životnim oblicima. Zabilježeno je 186 biljnih svojti vaskularne flore unutar 46 porodica i 134 roda. Izvršena je taksonomska, ekološka i fitogeološka analiza. Taksonomska analiza ukazuje da golosjemenjača ima 2 vrste (1,08 %), dvosupnica 155 vrsta (83,33 %), a jednosupnica 29 vrsta (15,59 %). Analiza životnih oblika pokazuje da su najviše zastupljeni hemikriptofiti sa 113 vrsta (60,75 %) i terofiti s 29 vrsta (15,59 %). U fitogeografskoj analizi dominiraju biljke euroazijskog flornog elementa sa 63 vrste (33,87 %) i biljke široke rasprostranjenosti s 38 vrsta (20,43 %). Fitocenološka analiza florističkog sastava pokazuje da ovi travnjaci čine prijelazni položaj između razreda Festuco-Brometea i Molinio-Arrhenatheretea, odnosno da pokazuju prijelazni položaj između redova Festucetalia valesiacae, Brometalia erecti i Arrhenatheretalia. On gentle eastern slopes of Psunj, dry grasslands are developed. Dry grasslands represent one of the most endangered forms of vegetation, and were the subject of this research. The terrain is slightly sloping towards the southeast, southern exposure, altitude about 400 m. The aim of the research was to determine the abundance and variety of vascular flora of grasslands in Rudine area. Floristic research was conducted in 2003, 2008, 2016 and 2017. On the surface of about 2500 m2, a list of plant taxa has been compiled and determined by their affiliation with families, floral elements and life forms.One hundred and eighty-six vascular plants of 46 families and 134 genera were recorded. Taxonomic, ecological and phytogeological analysis was carried out. Taxonomic analysis suggests there are 2 species of gymnosperm (1.08%), 155 species of dicotyledons (83.33%), and 29 species of monocotyledons (15.59%). The analysis of life forms shows that the most represented are 113 species of hemicryptophytes (60.75%), and 29 species of terophytes (15.59%). Plants of the Eurasian floral element with 63 species (33.87%) and plants with a wide spread of 38 species (20.43%) dominate in phytogeographic analysis. The phytocenological analysis of floristic composition shows that these grasslands are a transient position between the Festuco-Brometea and Molinio-Arrhenatheretea classes, that is to show the transition between Festucetalia valesiacae, Brometalia erecti and Arrhenatheretalia.