ACOTYLEDONS.-— LICHENS. Cornicularia , 69 

 31. CORNICULARIA. 



Universal receptacle cartilaginous, with a somewhat sohd thread 

 within, branched, shrubby. Par//a/ recep^. orbicular, terminal, 

 obliquely peltate,entirely formed of the substance of the thallus, 

 at length convex, subinflated; the circumference somewhat 

 margined, subdentate, at length reflcxed, of a rather difTerent 

 colour. 



1. C. tristis, thallus deep pitchy brown rounded or subcompressed 

 smoothish distichously dichotomous, branches fastigiate black 

 above, apothecia plano-convex blackish brown somewhat mar- 

 ginated entire and toothed. Ach. Syn. Lick. p. 299. Lichen 

 tristis, E. B. t.720. L. corniculatus, Lightf.p.S85. 



Hab. Alpine rocks, frequent. 



2. C. acideata, thallus glabrous chesnut brown roundish angular 

 pitted and subcompressed naked, branches and branchlets di- 

 varicated flexuose aculeated, apothecia reddish brown, the cir- 

 cumference somewhat toothed. Ach. Syn. Lich. p. 299. 



/3. spadicea, thallus glabrous chesnut coloured piano-compressed 

 somewhat pitted with the margins denticulate, branches and 

 branchlets short patent attenuated, apothecia spinoso-radiate 

 reddish brov\n. Lichen hispidus, Lighff. p. 883. E. B. t. 452. 



Hab. Highland mountains, frequent. 



3. C. bicolor, thallus black rounded capillary suberect branched, 

 branches fine shortish scattered patent their extremities curved 

 greyish. Ach. Sijn. Lich. p. 301. Lichen bicolor, E. B. 

 t. 1853. 



Hab. Ben y Glow, Mr. Dickson. Rocks upon hills about Loch Tay, 



not imfrequent, Mr. Turner and Hook. 

 Apothecia unknown. 



4. C. ochroleuca, thallus glabrous pale yellowish white roundish 

 suberect branched, branches short attenuated blackish at the 

 points, apothecia brownish pale in the circumference. Ach. 

 Syn. Lich. p. 301. Lichen ochroleuc, E. B. i. 2374. 



Hab. Highland mountains, Dickson. 



5. C. Za/^afa, thallus decumbent rounded smoothish dichotomous 

 greyish black, branches and branchlets flexuose intricate forked 

 at the extremity, apothecia somewhat margined plane, the 

 circumference naked and granulated. Ach. Sjju. Lich. p. 302. 

 Lichen lanatns, Light/, p. 892. E. B. t. 846. 



Hab. Rocks in the Highlands and in the Lowlands. 



6. C. pubescens, thallus decumbent rounded roughish black, 

 branches intricate capillaceous the ultimate ones simple, apo- 

 thecia of the same colour entire in the circumference. Ach. 

 Syn. Lich. p. 302, Lichen pubescens, Light/, p, 893, E. B. 



