Kärnefelt, I/ Mattsson, J-E 1989: Cetraria cucullata and C. nivalis, two vanishing lichens from southernmost Sweden. - International Journal of Mycology and Lichenology4(1-2): 299-305. [RLL List # 139 / Rec.# 9845] Keywords: CETRARIA/ SWEDEN/ CONSERVATION
Abstract: 2 figures. [Human activities and development seem to be the primary cause for the decline in these species, not regional air pollution.]