Kamienny Grzbiet Ridge is a small hill situated in the Ślęża Massif, built of serpentine rocks. The subjects of the researchwere vascular flora of grassland community Viscario-Avenuletum pratensis Oberd. 1949 developed in small areas near serpentine quarries and vascular flora of fields covering almostt he whole hill. 82 grassland and 76 weed species have been found there. Particularly interesting are: Avenula pratensis, Orobanche caryophyllea, Carduus nutans and Vicia pannonica ssp. pannonica.