82 YORKSHIRE NATURALISTS' UNION. 



Parmelia perlata L. Dent and Ingleton. 



P. conspersa Ehrh. Hawes Junction and Dent. 



P. omphalodes L. Whernside and Ingleborough. 



Physcia pulverulenta Schreb. Ingleton. 



P. obscura Ehrh. Dent. 



P. stellaris L. Dent. 



P. cassia Hoffin. Dent. 



Umbilicaria proboscidea Ach. Baugh Fell. 



Pannaria nigra Hiids. Dent. 



Squamaria saxicoia Poll. Hawes Junction. 



Placodium murorum Hojfm. Baugh Fell. 



P. can di cans Dicks. Thornton Force. 



Lecanora ventosa L. Howgill Fells. 



L. aurantiaca Light/. Ingleton. 



L. atra Huds. Ingleton. 



L. vitellina Ach. Ingleton. 



L. subfusca L. Hawes Junction. 



L. cinerea Z. Ingleton, 



L. parella L. Sedbergh. 



L. badia Ach. Baugh Fell. 



L. ferruginea Huds. Baugh Fell. 



Pertusaria communis JDC. Dent and Ingleton. 



Lecidea decolorans Elk. Baugh Fell. 



L. pa rase ma Ach. Ingleton. 



L. contigua Er. Pateley and Hawes Junction. 



L. contigua Er. var. limitata. Baugh Fell. 



L. canescens Dicks. Ingleton. 



L. geographica L. Howgill Fells and Ingleborough. 



Graph is scripta Ach. Rawthey Dale and Pateley. 



Trans. y.N.U., 1879. SeriesE 



