CLADONIA.] CLADONIEI. 131 



often also pulverulent at the margins. It is not uncommon in a fertile 

 condition, the apothecia being often confluent. 



Hab. Among mosses on the ground and old walls in maritime and 

 upland districts. Distr. General and common in Great Britain, and 

 probably also in Ireland, though no specimens have been seen ; rare in the 

 Channel Islands. B. M. : Island of Guernsey. Wootton Common, Nor- 

 folk ; Epping Forest, Essex ; Chislehurst, Kent ; Leith Hill, Surrey ; 

 Lustleigh Cleeve, Dartmoor, Devonshire ; near Penzance and Helminton, 

 Cornwall ; Adderbury Church, Oxfordshire ; Hale End, Malvem, Wor- 

 cestershire ; Shrewsbury, Shropshire ; Aberdovey and Dolgelly, Merioneth- 

 shire ; Ayton, Newton, and Kildale Moors, Cleveland, Yorkshire ; Mor- 

 peth, Northumberland. New Galloway, Kirkcudbrightshire ; Pentland 

 Hills, Edinburgh ; Appin, Argyleshire ; Rannoch and Blair Athole, 

 Perthshire ; Durris, Kincardineshire ; Countesswells, near Aberdeen, and 

 Castleton of Braemar, Aberdeenshire ; Loch Linnhe, Inverness-shire ; 

 Lairg, Sutherlaudshire. 



Form 1. lepidophora Florke, Clad. (1828) p. 70. Podetia 

 densely covered with minute, crowded, inciso-crenate, glaucous-grey 

 squamules. Cromb. Grcvillea, xi. p. 111. Gladonia pyxidata (3. 

 cliloroplicea c. pJiyllopliora (Wallr.) Mudd, Brit. Clad. p. 9. 



This form seems quite distinct from the type, but the younger podetia 

 are as in it granulato-pulverulent. Its distinctive character no doubt 

 depends upon age and the nature of the habitat ; in the type itself podetia 

 sometimes occur bearing a few scattered squamules. In the few speci- 

 mens seen the apothecia are not numerous. 



Hab. On old brick Avails and thatched roofs in lowland districts. 

 Distr. Probably general, though seen only from Central and W. England, 

 N. Wales, and N.E. Scotland. B. M. : Lechlade, Oxfordshire ; near 

 Cirencester, Gloucestershire ; Conway, Carnarvonshire. Kiunordy, For- 

 farshire ; Cults, near Aberdeen. 



Form 2. myriocarpa Cromb. Grevillea, xi. (1883) p. 111. 

 Podetia somewhat short, subturbinate ; scyphi subdilated, proli- 

 ferous from the margins, the prolifications narrow, multifid. Apo- 

 thecia sessile, small, aggregato-confluent. Cladonia pyxidata var. 

 Jtmbriata f.myriocmya Coem. Clad. Belg. (1863) n. 53; Mudd, Brit. 

 Clad. p. 10.' Brit. Exs. : Larb. Caesar, n. 58. 



A well-marked form, referred to C.fmbriata by Coemans,but belonging 

 to this variety of C. pyxidata, from which it is distinguished by the pro- 

 lifications of the scyphi. The apothecia in well-fruited specimens are 

 very numerous and crowded, from pale-brown becoming reddish-brown. 



Hab. On the ground and on wall-tops in maritime and upland situa- 

 tions. Distr. Local and scarce in the Channel Islands, W. England 

 S. Scotland, and the S. and N. Grampians. B. M. : St. Ouen's Bay, 

 Island of Jersey. Ozleworth Park, Gloucestershire ; Malvern and Bewd- 

 ley, Worcestershire. Castle Douglas, Kirkcudbrightshire; Achmore, 

 Killin, Perthshire ; Glen Cluny, Braemar, Aberdeenshire. 



5. C. leptophylla Florke, Comm. Clad. (1828) p. 19. Thallus 

 squa mulose at the base, pale-greenish ; squamules small, scattered, 



