Bystrek, J/ Gorzynska, K 1981: Porosty Roztocza--the lichens of the Roztocze Region (Eastern Poland). - Fragmenta Floristica et Geobotanical27: 213-237. [RLL List # 117-11 / Rec.# 2777] Keywords: POLAND/ USNEA
Abstract: [Documentation of 301 lichen species in the Roztocze region including the first report of Usnea arnoldii from Poland.]