272 RECENT ADDITIONS TO THE BRITISH LICHEN-FLORA. 



at Kenmore, Perthshire (Dr. Holl). Apothecia not seen rightly 

 evolute. 



Collema conchmum, Flot. — On rocks and wall-tops. Near 

 Penzance, Cornwall (Curnow) ; Barmouth, N. Wales (Salwey) ; 

 Connemara, Ireland (Larhalestier). This is distinguished from 

 C. crispum by the smaller thallus and spores. 



C. tenax, var. coronatum, Krb. — On the ground and amongst 

 mosses on walls. Not uncommon in W. England, the W. High- 

 lauds of Scotland, and S.W. Ireland. This is the Lichen cristatus 

 of earlier British authors. 



Leptogium {Homodium) placodielhun, Nyl. — On calcareous rocks. 

 Cleve Hill, Somersetshh-e (Joshua). Sterile. 



L. [Collemodium) tjlebidentum, Nyl., in litt. sp. n. — On calcareous 

 rocks. Craig Guie, Braemar (Crombie, 1870). Thallus olive- 

 brown, thickly isidiose; the isidia granuloso-crustose, glumuloso- 

 diffract, membranaceous and sublobate at the circumference, 

 internally entirely cellulose; apothecia and spermogones unknown. 

 It is allied to L. rividare (Ach.). 



'^'Calicium curtiusculum , Nyl., in Flora, 1879, p. 360. — On wood 

 and old pales. Cambridge (Larhalestier) ; near Lewes, Sussex 

 (Crombie). A subspecies of C. guercinum. 



C. pusiilum, Flk. — On decorticated trees. Deer Park, Castle 

 Martyr, Co. Cork (I. Carroll). 



Stenocifhe eiispora, Nyl. — On the bark of trees. Mangerton, 

 Kerry. Ireland (Carroll). Distinguished from ;S'. trajecta, Nyl. 

 (= Sphinctrina septata, Leight.), especially by the smaller spores. 



Stereocaidon denudatum, var. pidvinatiim, Schser. — On the 

 ground and on rocks. Mountains of Wales ; N. England ; the 

 Scottish Grampians ; and S.W. Ireland. Not uncommon. 



Ramalina fraxinea, var. calicariformis, Nyl. — On the trunks of 

 trees. Near Barmouth, N. Wales (Salwey) ; Kendal, Westmore- 

 land (Martindale). 



-•'/i. capitata, Ach. — On mountain rocks. Teesdale, Durham 

 (Harriman) ; Ben-uaboord, Braemar (Crombie). Always sterile. 



'^R. brei'iuscula, Nyl. — On maritime and mountain rocks. S. and 

 W. England; N.E. Scotland. Very sparingly fertile. 



R. minuscula, Nyl. — On the branches of stunted larches. Craig 

 Cluny, Braemar (Crombie). 



Usnea scabrata, Nyl., in Flora, 1875, p. 103. — On the trunks 

 and branches of larch-trees. Ben Lawers, Perthshire (Crombie). 



U. ceratina, var. scabrosa, Ach. — On shrubs, trees, and rocks. 

 Not uncommon in maritime and mountainous tracts of Great 

 Britain. 



Cetraria oduntell.a, Ach. — Amongst mosses on a large boulder. 

 Upper Glen Dee, Braemar (Crombie). Very sparingly gathered. 



Platijsina polijschizwn, Nyl. — On alpine rocks. Near the summit 

 of Beii-naboord, Braemar (Crombie). 



Parmclia carporJikans, Tayl. — On rocks and trees. Not un- 

 common in S. England. To this is referable Sm. E. B., t. 700. 



P. omphalodes, f. cccsioprninosa, Nyl. — On alpine rocks. Summits 

 of Ben Lawers and Craig CalHach, Perthshire (Crombie). 



