LICHENS. 297 
Lecidea sphaeroides, Dicks. 
Guernsey (Mrs. Collings). 
Lecidea carneo-lutea, Turn. 
Generally distributed: occurring on old elms and occasionally 
6n other trees : rarely on ivy stems. 
Lecidea umbrina, Ach. 
On rocks, old walls, and gate-bars: generally distributed and 
not uncommon. This species is readily recognised by the curious 
spirally-contorted spores. 
Lecidea milliaria, Fr. f. terrestris, Fr. 
Guernsey (Larbalestier). 
Lecidea phacodes, Korb. f. chlorotica, Ach. 
On old elms. Prevosts and Bordages, St. Saviour’s. Vinaires, 
St. Peter’s. Calais Valley. 
Lecidea sabuletorum, Flk. 
Frequent on old walls among small mosses. _ 
Lecidea premnea, Ach. 
Guernsey (Larbalestier). 
Lecidea carneola, Ach. 
On trees on the cliffs above Bec du Nez, scarce. 
Lecidea endoleuca, Ny]. 
Common on tree-trunks, old ivy, and furze stems. 
Lecidea rubella, Erhr. 
Not uncommon on elms in the interior of the island. 
(Lecidea bacillifera, Nyl. occurs in Herm.) 
Lecidea effusa, Sm. 
Valley below La Fosse, St. Martin’s, on a young elm-tree. Var. 
fuscella, Fr. Guernsey (Larbalestier). 
(Lecidea herbarum, Hepp. occurs in Sark.) 
Lecidea geographica, L. 
Rather common all round the coast. One of the prettiest of 
crustaceous lichens, conspicuous by its bright greenish-yellow colour 
and map-like markings. 
Lecidea petraea, Wulf. 
Common on rocks and stones. 
