98 THE LICHEN-FLORA 



f. sorediosa, margins sorediate, fusco-nigricant and rugose beneath. 



Exs :— Anzi It. S. 58. Schaer. 252. 



Localities :— High Cliff, Cleveland. Mr. Mudd. Foreshield Wood, Alston, 

 Cumberland. Bev. W. Johnson. Blaeberry Hill, Perth ! Ben Mac Dhui, 

 Braemar ! Dr. W. L. Lindsay. 



f. fallax, (Web.) margins entire or sorediate, entirely albicant 



beneath. 



Fig :— Hffm. PL L. t. 47. f . 1—3. 



Localities. — Carlisle ! Mr. I. G. Heysham. Inverary. Sir W. J. Hooker. 

 Killin. Bev. J. M. Crombie. Blackaton Bock, Devon. Mr. Jacob. 



f. caralloidea, (Wallr.) margins minutely lineari-dissectofimbriate, 

 pallescent or albicant beneath. 



Fig :— E. Bot. 2373. Hffm. PI, L. t. 46. f. 1—3. Hepp Sporen t. 66. f. 574- 

 Schaer. 253. 



Exs :— Th. Fr. 30. M. and N. 156. Anzi Langob. 418. Hepp 574. Schaar. 253. 



Localities. — Devonshire. Mr. Slater. Carig Mountain, Ireland. Dr. Taylor. 

 Baldovan Woods ; Clova Mountains. Mr. W. Gardiner. 



10. P. laeunoswm, Nyl, whitish, membranaceous, retietdato- 

 lacunose, broadly laciniate or lobato-laciniate, lacinice crenato-vndu- 

 late and incised, -rotundate at the apex, beneath fusco-nigricant or 

 fusco-pallescent or entirely whitish, (K+C — ) ; apothecia spadi- 

 ceous, receptacle rugulous beneath, margin thin entire. 



On damp rocks, rare. 



Stn :-Nyl. Syn. 314. (1858). Cetraria, Ach. Meth. 295. 

 Fig :— Ach. Meth. t. 5. f. 3. 

 Exs:— Tuck. 6. 61. 



Geog. Distkib: — N. America, Norway. 

 Bot. Pbov. :— 15, 16. 



Scotland:— Ben Lawers ! Craig Cluny, Braemar. Bev. J. M. Crombie. Fort 

 William, in Lochaber. Adim. Jones. 



" Spores .006—8 mm. long, .004—5 mm. broad." (Nyl.) 



l Series IV. PHYLLODEI. 



Thallus fohaceous, depressed, lobate or variously laciniate or 

 stellate, very rarely caespitoso-intricate, medulla stuppeous. Apo- 

 thecia either peltiform or lecanorine or lecideine and gyrose. Spores 

 various. Paraphyses distinct or indistinct. Spermatia shortly 

 acicular or slenderly cylindrical, straight, narrower in the middle. 



Tribe XI. PELTIGEREI. 



Thallus frondose, dilatate, cortical layer deficient on the under 

 surface. Apothecia peltiform, rotundate, reniform or oblong, mar- 

 ginal, adnate to the upper or lower surface or scattered on the 

 upper surface of the thallus. Spores 8, colourless and fusiform in 

 the marginal apothecia, fuscous and ellipsoid and biloeular in the 

 scattered apothecia. Paraphyses stout, articulate. 



Sot-tribe I. NEPHROMEI. 



Apothecia adnate to the lower surface of the margin of the 

 thallus. Spores 8, colourless or fuscescent, 3-septate. 



