LICHENS. 299 
Opegrapha lyncea, Sm. 
Guernsey (Larbalestier). 
Opegrapha prosodea, Ach. 
On an old ash-tree in Moulin Huet Valley. 
Stigmatidium crassum, Dub. 
Common throughout the island on the trunks of large trees. 
Stigmatidium circumscriptum, Tayl. 
In several places at Jerbourg, and on the cliffs between Petit 
Port and Moulin Huet; also between Fermain and Bec du Nez. 
Eastern side of Lancresse. Forms small snow-white patches usually 
on the under side of overhanging rocks. 
Stigmatidium Hutchinsiae, Leight. 
Roadside wall, Saints Bay Valley. Old well, Moulin Huet. 
Arthonia punctiformis, Ach. 
Guernsey (Larbalestier). 
Arthonia astroidea, Ach.. 
Frequent in all parts: usually on young trees. 
Arthonia epipasta, Ach. 
Petit Port cliffs, on a crab apple-tree. 
Arthonia Swartziana, Ach. 
Guernsey (Mrs. Collings). 
Arthonia cinnabarina, Wallr. 
Not common. On trees near St. Andrew’s Church. Cliffs at 
Bec du Nez, on old willows. Mrs. Collings notes f. dubia, T. & B., 
and f. detrita, T. & B. (Var. pruinata, Del. occurs in Alderney. ) 
Arthonia anastomosans, Ach. 
Guernsey (Mrs. Collings). 
Arthonia varians, Dav. 
Parasitic on the apothecia of Zecanora glaucoma. Not uncommon. 
Graphis scripta, Ach. 
The forms f. flexuosa, Leight., and f. tremulans, Leight., are 
recorded by Mr. Larbalestier; and f. radiata, Leight. by Mrs. 
Collings. 
Graphis pulverulenta, Ach 
Guernsey (Larbalestier). 
Graphis dendritica, Ach. 
Fermain Valley. Near King’s Mills. Mont Varouf, St. Saviour’s. 
f. obtusa, Leight. Near Sausmarez Manor, Catel. 
