126 THE LICHEN-FLORA 



Syn .-Neck. Delic. Gallobelg. 506. (1768.) Ach. Syn. 199. Nyl. Syn. 395. 

 Mudd Man. 99. 



Fig :— E. Bot. 1652. Hepp Sporen t. 98 f . 865. 



Exs:— M. and N. 256. Schser 547. Zw. 55. Hepp 865. Anzi It. S. 112. Leight. 

 362. Mass. 25. 



Geog. Distktb :— Europe, Africa, N. America. 



Bot. Peov :— 2, 3, 4, 5. .8.. .10. 



England : — Saham Wood, Norfolk. Sir J. E. Smith. (1799.) Ickworth Park 

 near Bury. Rev. G. R. Leather. Skutterskelf, Cleveland ! Mr. Mudd. near 

 Bilston, Staffordshire; Beeding Priory, Sussex! Rev. A. Bloxam. Stanstead 

 Park, Essex. Mr. R. Jacob, near Ripon, Yorkshire. Mr. W. Brunton. Bramber 

 Castle, Sussex. Mr. Larbalestier. Felix Hall Park ! Kelvedon ; Rivenhall ; 

 Lyston, Essex. Mr. Varenne. near Worcester. Dr. Hott. Chilston Park, near 

 Lenham. Broome Park, near Sibertswold, Kent. Mr. Holmes. Harborough 

 Magna, near Rugby ! Rev. A. Bloxam. near Fairford. Mr. W. Joshua. 



" Spores .00275 to .003 in. long, by .001 to .0015 broad." (Mudd.) " Spores 

 .012—16 mm. long, ,008— .010 mm. broad." (Nyl. & T. M. Fr.) 



20. P. saxatilis, (L.) cinerascent or albido-cinerascent, mem- 

 branaceous, orbiculari-expanded, laciniose, reticulato-ruffulose, isid- 

 ioso-scabrous, lacinise sinuato-multifid or sinuato-incised or lobate, 

 apices retuse, black and fibrillose beneath; apothecia spadiceo- 

 badious, or fuscous, margin entire, or crenulate ; spores 8, colour- 

 less, elliptical, simple ; medulla K yellow then red. 



On rocks, trees, &c. common. 1724. 



All forms of saxatilis are readily distinguished by the reticulato-rugulose 

 thallus. 



Syn :— Linn. Fl. Suec. 1075. (1753.) Ach. Syn. 203. Nyl Syn. 388. Mudd 

 Man. 94. 



Fig :— E. Bot. 603. DilL t. 24. f. 83. Hepp Sporen t. 98. f. 860. 



Exs :— Anzi It. S. 104 a. Leight. 203. right spec. Fellm. 78. Hepp 860. pt. 

 Schaer. 362. Mudd 66 



Geog. Disteib :— Europe, Asia, Africa, N. America. 



Bot. Pkov:— 1...3, 4. 5, 6, 7.. .10, 11.. .13, 14, 15, 16.. .18, 19...31. 



England: — Ingleby Park, Cleveland. Mr. Mudd. Berwick-on-Tweed. Dr. 

 G. Johnston. Northumberland and Durham. Mr. Winch. Kelvedon, Essex. Mr. 

 Varenne. Dunsford, Devon. Mr. Parfitt. Midland Counties. Mr. Purton. Shot- 

 over Hill, Oxford. Mr. Baxter. Cambridge. Rev. R. Relhan. Oxford. Dr. SMhorp. 

 Bedford. Rev. C. Abbot. 



Scotland : — Stennis, Orkney ; Ayrshire ! Dr. Lindsay. Braid Hermitage and 

 Pentland Hills. Dr. GrevUle. Forfarshire. Mr. W. Gardiner. Long Island; 

 Arran. Prof. Balfour. Glencroe ! Dr. Macmillan. Isle of May, Firth of Forth. 

 Mr. Sadler. 



Ireland : — Killarney. Dr. Carrington. trees and rocks, common. Mr. Carroll. 



Wales : — Aber. Rev. Hugh Davies. Cwm Cywion ! (fruit) Bwlch mountain 

 near Aberystwith. Miss Atwood. Capel Arthog! (corticole in fruit) Snowdon ! 

 Aran Mowddwy ! 



Channel Islands : — Guernsey. Rev. T. Salwey, common on all the Islands, 

 Mr. Larbalestier. 



"Spores .0035 in. long, by .002 to .00225 in. broad." (Mudd.) "Spores 

 .015—19 mm. long, .009—12 mm. broad." (Nyl.) " Spores .014-19 mm. long, 

 .009— 12 mm. broad." (T. M. Fr.) 



f. glomulifera, Cromb. thallus bearing blackish glomervles, simi- 

 lar to those of Micdsolia amplissima. 

 On alpine boulders. 1872. 

 Syn : — Crombie in Joum. Bot. n. s. 1. p. 307. 

 Scotland : — Morrone, Braemar, Rev. J. M. Crombie. (1872.) 



Var. sulcata, Tayl. whitish or albido-glaueescent, reticulato-sore- 

 diate, soredia whitish, margined by the ruptured thallus, sulciform, 

 never isidiiferous ; medulla K yellow then red. 



On trees and walls. 1836. 



