168 LICHENACEI. [CLADONIA. 



forms. The apothecia are not very common in a rightly developed con- 

 dition. 



Hob. Among mosses on old trunks of trees and on the ground in 

 wooded upland districts. Distr. General and not uncommon in most 

 parts of Great Britain, rare in the Channel Islands ; not seen from Ireland. 

 B. M. : Island of Jersey. New Forest, Hants ; Lustleigh, Devonshire ; 

 near Withiel, Cornwall ; Bradgate Park, Leicestershire ; Cromford Moor, 

 near Matlock, Derbyshire ; Cwm Bychan, Merionethshire ; Ayton and 

 Ingleby, Cleveland. " Yorkshire ; Windermere, Westmoreland. Barcal- 

 dine, Argyleshire ; Craig Calliach, Craig-y-Barns near Dunkeld, and 

 Falls of Bruar, Perthshire; Sheriffmuir, near Stirling; Craig Cluny, 

 Braemar, Aberdeenshire ; Rothiemurchus Woods, Inverness-shire. 



Form 1. styracella Nyl. Lich. Scand. (1861) p. 62. Thallus 

 foliolose at the base, the leaflets minute, thin, lobed, subimbricate 

 or somewhat scattered ; podetia simple, slender, subuliform, white- 

 pulverulent, the scyphi very minute with entire margin. Apothecia 

 not seen rightly developed. Cromb. Grevillea, xi. p. 114. Bceo- 

 myces bacittaris j. styracellus Ach. Meth. (1803) p. 330. Cladonia 

 cocci/era e. macilenta f. subulata Mudd, Brit. Clad. p. 32. Brit. 

 Exs. : Mudd, Clad. n. 74 ; Leight, n. 297. 



Differs chiefly in the thinly lobed basal folioles and in the s'mj 1 r 

 podetia, which are attenuate upwards. The minute st-yphi are rarely 

 present, and the apothecia occur only in a young state. 



Hob. On mossy trunks of old trees in mountainous districts. Distr. 

 Local and rare in S., W., and N. England, more frequent among the 

 Scottish Grampians ; rare in the Channel Islands and in S.W. Ireland. 

 B. M. : Island of Jersey. Withiel, Cornwall ; Lounsdale, Cleveland, 

 Yorkshire ; Nesscliff, Shropshire. Barcaldine, Argyleshire ; Loch Tum- 

 mel, Perthshire; Rothiemurchus Woods, Inverness-shire. Turk Mt., 

 Killarney, co. Kerry. 



Form 2. clavata Fr. Lich. Eur. (1831) p. 334. Podetia thickish, 

 simple, subvcntricose, cornute at the apices, white-pulverulent. Apo- 

 thecia few, minute. Crornb. Grevillea, xi. p. 114. Subsp. Cladonia 

 macilenta f. clavata Leight. Lich. Fl. p. 70, ed. 3> p. 64. Bceomyces 

 deformis j3. clavatus Ach. Meth. (1803) p. 334. Cladonia coccifera 

 e. macilenta 1. monstrosa Mudd, Brit. Clad. p. 33. Lichen cornutits 

 fl. Lightf. Fl. Scot. ii. p. 876. Coralloides vix ramosum scypliis 

 obscuris Dill. Muse. 90, t. 15. f. 14 B, c. Brit. Exs. : Mudd, Clad. 

 n. 79 ; Leight. n. 403. 



This form is as it were only a more turgid state of the preceding, with 

 which also it agrees in the length of the clavato-ventricose podetia 

 (though these are sometimes thick and stunted), which render it easily 

 distinguished. It is apparently everywhere extremely rare with rightly 

 developed apothecia. 



Hob. On the ground among mosses on heaths and on the dead stumps 

 of trees in wooded upland districts. Distr. Found only in S., W., and N. 

 England, N. Wales, and among the Grampians, Scotland. B. M. : New 

 Forest, Hants; Long Mynd, Shropshire; Aberdovey, Merionethshire; 

 Westerdale, Cleveland, Yorkshire; near Whitehaven, Cumberland. 

 Craig Calliach and Rannoch, Perthshire ; Mar Forest, Braemar, Aber- 

 deenshire ; Rothiemurchus, Inverness-shire. 



