LICHENS. 291 
(Lecanora torquata, Fr. occurs in Alderney. According to 
Leighton it is doubtfully distinguishable from Zecidea rivulosa, but 
Crombie regards it as a true and distinct Zecanora.) 
Lecanora parella, L. 
Very common on trees, rocks, and stones. Var. pallescens, L. 
Mourants, Catel. Mrs. Collings records the forms tumidula, Pers. 
and Turneri, Sm. 
Lecanora rupestris, Scop. 
Guernsey (Mrs. Collings). 
Lecanora glaucoma, Hffm. 
Common on rocks and hedgestones throughout the island. 
(f. decussata, Cromb. occurs in Sark.) 
(Lecanora subcarnea, Ach, occurs in Alderney.) 
Lecanora albella, Pers. 
Bec du Nez cliffs, on a willow. Fermain Valley, on an old 
ash-tree. 
Lecanora aurantiaca, Lightf. 
Mont Cuet, Vale, on a stone in a hedge. 
Lecanora ferruginea, Huds. 
Common on rocks and hedgestones. f. saxicola, Ach. Petit 
Port. f. festiva, Ach. Frequent on the south coast. 
(Lecanora caesiorufa, Nyl. occurs in Sark. Crombie describes it 
as ‘well separated from Z. ferruginea, with which until recently it has 
usually been confounded.’) 
Lecanora cerina, Ehrh. 
Rather common throughout the island on elder-trees ; less 
frequent on other trees, and on old ivy stems. 
Lecanora pyracea, Ach. 
Mont Saint, on hedgestones. 
Lecanora ulmicola, DC. 
On old elms: Les Buttes, St. Saviour’s, and near Mont Saint. 
Lecanora arenaria, Pers. 
Guernsey (Mrs. Collings). 
Lecanora epixantha, Ach. 
Vale Castle (Larbalestier’s Zzch. Rariss., No. 92 in my copy). 
Lecanora phlogina, Ach. 
Etiennerie, Catel, on a gate bar. 
