140 



THE LICHEN-FLORA 



14. P. tribacoides, (Nyl.) nearly similar to P. tribaeia, (Ach.) 

 NyL but the white soredia arranged as those of P. casia, and the 

 thalline and medulline reaction with K+ ; apothecia insufficiently 

 developed. 



On young trees. 1874. 



Syn :— Nyl. in Flora 1874, p. 307. 



Geog. Distbib : — Western Prance. 



Bot. Pbov:— 2. 



England :— Near Ryde, Isle of Wight. Bev. J. M. Cronibie, 1874. 



§§§ medulla Ky C — . 



15. P. stellaris, (L.) white or albo-glaucescent, orbicular, stellari- 

 appressed, laciniae multifid, contiguous, subcortically albo-maculate, 

 under surface whitish with concolorous or. fuscescent or nigricant 

 fibriUse ; apothecia fuscous-black or black, naked or ceesio-pruinose, 

 margin entire or obsoletely crenulate ; spores 8, fuscous, oblong, 

 1-septate ; cells nucleolate. 



All the varieties or forms of P. stellaris may be recognized by 

 the sub-cortically albo-maculate thallus. 

 On trees. 1724. 



Syn : -Linn. Sp. PL 1. ed. No. 27. (1753.) Ach. Syn. 215. NyL Syn. 424. 



Fig :— Reich, and Schub. 86. Hffm. En. 1. 13. f. 1. 2. TuL Mem. t. L f. 8-16. 



Exs :— M. & N. 163. Schser. 350. 351. Madd 79. Mass. 318. Fellm. 87. Hepp 

 877. Bohl. 103. Anzi It. S. 117. Leight. 6. 



Geog. Distkeb : — Europe, Asia, Africa, N. America, Australasia. 



Bot. Pbov :— 1...3, 4, 5, 6, 7.. .10, 11.. .14, 15...19...31. 



England : — Near Ayton ! Mr. Mudd. Oswestry ! Bev. T. Salwey. Yorkshire ! 

 Mr. Doom. Essex. Mr. Pigott. Ravensworth and Cawsey Woods ! West Dipton 

 near Hexham and Oak Wood near Wylam, Northumberland. Mr. Winch. 

 Devon. Mr. Parfitt. Kelvedon, Essex. Mr. Varenne. Midland Counties. Mr. 

 Purton. Bedfordshire. Bev. G. Abbot. Cambridge. Bev. B. Belhan. Oxford. Dr. 

 SMhorp. Guestling, Sussex. Bev. B. N. Bloomfield. Tetsworth ! Oxfordshire ! 

 Mr. LarbdUitier. Malvern. Mr. Lees. Sutton ! Berwick ! Ensdon ! Pulley ! 

 Shropshire. 



Scotland : — Glen Nevis. Dr. Lindsay. Forfarshire. Mr. Gardiner. Swanston 

 Wood, near Edinburgh. Dr. GreviUe. 



Ireland : — Great Island, Cork. Mr. Carroll. 



Wales : — Barmouth ! Aberystwith. Miss Atwood. Llanbedrog ! Edderton ! 

 Forden, Montgomeryshire, near Tremadoc ! 



"Spores .004 in. long, by .00175 to .002 in. broad." (Mudd.) "Spores 

 .016—23 mm. long, .008— .011 mm. broad." (Nyl.) "Spores ,016—24 mm. 

 long, .008—11 mm. broad." (T. M. Fr.) 



Var. leptalea, (Ach.) narrowly laciniate, laciniae oppressed, sub- 

 cortically albo-maculate, margins albo- or fuscescenti^fibrilloso-ciliate. 

 On trees and stones. 



Syn :— Ach. Meth. 198. (1803.) Syn. 221. NyL Syn. 425. 



Fig :— Jacq. Coll. 4. t. 6. f. c. 



Exs :— Schaer. 562. 349. Welw. Lusit. 73. Anzi It. S. 118. M. & N. 450 b. 

 (in part). Reich. & Schub. 37. 



Geog. Distbtjb :- Europe. 



Bot. Pbov :— 3...5...7...10, ll...(19— 30). 



England : — Oswestry ! Bev. T. Salwey. TJlting near Maldon ! Mr. Piggott. 

 Yorkshire ! Mr. Dixon, near Gainford, Durham. Bev- J. Harriman. Pontesford 

 Hill! Shropshire. 



Scotland : — Grampians, common. Bev. J. M. Crombie. 



Ibeland : — On trees and stones, frequent. Mr, Carroll. 



Wales : — Edderton ! Montgomeryshire. 



