RECENT ADDITIONS TO THE BRITISH LICHEN-FLORA. 273 



P. suhaurifera, Nyl. — On the trunks and branches of trees. 

 Chiefly in S. England, and amongst the Scottish Grampians. 



*P. Delisei, var. isidiascens, Nyl. — On rocks in maritime and 

 upland districts. W. England and Central Scotland. Very rarely 

 fertile. 



P. ])roliiva * sorediata, Ach. — On mountain rocks. Craig Guie, 

 Braemar (Crombie). Sparingly gathered. 



Physcia pulverulenta, f. pannifonnis, Cromb., in Journ. Linn. 

 Soc. Bot., xvh., p. 571. — On trunks of old trees. Harboro' Magna, 

 AVarwickshire (Bloxam). LaciniaB short, crowded, densely imbri- 

 cated ; apothecia small. 



P. i^ulverulenta, f. deminuta, Cromb. — On the trunks and 

 branches of trees. S. and W. England (Bloxam and Joshua). 

 Thallus effuse, the lacini^ minute, more or less diffract ; apothecia 

 minute. 



P. imlverulenta, var. suhpapillusa, Cromb. — On the trunks of old 

 trees. Bury St. Edmunds, Suffolk. Thallus almost entirely 

 subgranulato -unequal or subpapillato-granulated. 



P. aipolia, var. anthelina, Ach. — On trees and old pales. 

 Henfield, Sussex (Borrer). 



P. trihacia, Ach. — On fruit-trees in orchards. Rare in the 

 Channel Islands and S. England. Always sterile. 



Umhilicaria atwpruinosa, Schser. — On al^Dine rocks. Summit 

 of Cairntoul, Braemar (Crombie). Very rare. 



Gyrophora prohoscidea, var. deplicans, Nyl. — On alpine rocks. 

 Ben-naboord, Braemar (Crombie). 



G. cylindrica, var. Delisei, Despr. — On alpine rocks. Ben- 

 naboord, Braemar, and Ben Nevis, Lochaber (Crombie). 



G. torrida, f. suhdividens, Nyl. — On rocks. Connemara, Galway 

 (Larbalestier). 



Lecanora (Placodium) xantholyta, Nyl., in Flora, 1879, p. 361, 

 sp. n. — On calcareous rocks. Bathampton Downs (Joshua) ; near 

 Stokesay, Shropshire (Leighton) ; Great Orme's Head (Holmes) ; 

 near Kendal (Martindale) ; Craig Tulloch, Blair Athole (Crombie). 

 Always sterile. 



L. ccBsiorufa (Ach.), Nyl. — On maritime and mountain rocks. 

 Local in S. and W. England, AV. Highlands of Scotland, and W. 

 Ireland. According to Nylander (in. litt.), L. scotoplaca, Nyl., is a 

 variety of this, and not of L. ferruginea. 



L. albolutesceiis, Nyl., in Flora, 1881, p. 177, sp. n. — On 

 quartzose rocks. Stocksfield, Northumberland (Rev. W. Johnson). 

 L. cerinella, Nyl. — On branches of trees. Near Cambridge 

 (Larbalestier). 



L. vitelUnula, Nyl. — On calcareous rocks. Apparently local in 

 S. and W. England, and in W. Ireland. 



L. xanthostiyma (Ach.), Nyl. — On old trunks of trees. Glynde, 

 Sussex (Crombie) ; near Bradford, Yorkshire (in lib. Sower by). 



L. culobina, Ach. — On elm trees. Near Cambridge (Larbal- 

 estier). 



L. tdchopJdla, Nyl. — On walls. Thetford, Suffolk (Larbalestier), 

 fide Nylander. 



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