OF GREAT BRITAIN. 435 



Geog. Distrib :— Europe, 



Bot. Prov:— 2, 3.. .5. ..7, 8...19...26...30...31. 



England : — Sussex ! Mr. Borrer. Hartshill Wood ! near Atherstone ! Gopsall 

 Wood ! Donnington Park ! Leicestershire. Rev. A. Bloxarn. near the Berrow, 

 S. end of Malvern Hills ! Mr. Lees. New Forest ! Hants. Mr. Lyell. Haldon, 

 Exeter. Mr. Parfitt. Kelvedon ! Braxted ; Messing, Essex. Mr. Varenne. 



Ireland :— Montalto ! Cultra ! Bangor ! co. Down. Mr. Thompson. Blarney I 

 oo. Cork. Mr. Carroll. Lord Sligo's Demesne, Westport ! co. Mayo. Mr. Lar- 

 oalestier. 



Wales : — Barmouth ! Rev. T. Salwey. Gloddaeth ! near Conway ; Gwydir 

 Woods ! Bettws y-coed. 



Channel Islands :— St. Peter's Valley ! Jersey. Mr. Larbalestier. 



Spores .037 mm. long, .017 mm. broad. 



var. dendriticoides, Leight. lirellse immersed, branched in a 

 pedato-radiate manner ; epithecium dilated csesio-pruinose. 



On holly. (1875.) 



Holly Park near Stokesay, Shropshire ! 



10. G. inustula, Nyl. milk-white, subrimulose, (K-yellow) ; 

 Urellce immersed, with 2-3 cuspidate branches ; epithecium ccesio-prui- 

 nose, plane ; spores 8, colourless, oblong, murali-locular. 



On holly, rare. 1877. 



Syn :-Nyl. in Flora 1877. p. 566. 



Bot. Pkov :— 26. 



Ireland : — Lord Sligo's Demesne, Westport ! co. Mayo. Mr. Larbalestier, 

 (1877.) 



" Like G. inusta, but with different spores .038 —48 mm. long, .015 — 20 mm f 

 broad." (Nyl.) Spores .034 mm. long, .015 mm. broad. 



X. CHIODECTON. Ach. 



Thallus thin, whitish, with scattered elevated sub-rotund white 

 pulverulent verrucse. Apothecia pale-brown, pruinose, substellato- 

 radiate, plane, aggregated or confluent and immersed in the ver- 

 ruca. Hymenium ceraceo-gelatinose, pale, uupported on the 

 vertical divisions of an opaque blackish-brown hypothecium. Para- 

 physes distinct. Spores 8, fusiform, 3-septate. Spermatia aci- 

 cular, arcuate. 



1. G. albidum, (Tayl.) whitish, sub-squamoso-areolate, dispersed, 

 pulverulent ; thallodal verrucce, scattered, elevated, sub-rotund, de- 

 pressed ; apothecia pale-brown, naked or pruinose, sub-stellato- 

 radiate; spores 8, colourless, broadly lineari-fusiform, 3-septate. 



On shaded rocks, very rare. 



Syn :—Syncesia aibida, Tayl. Fl. Hib. 2. 163. (1836.) Chiodecton, Leight. Ang. 

 Lich. 25. Mudd Man. 245. 



Fio ;-Leight. 1. c. t. 8. f. 4. t. 9. f. 1. 



Geoo. Distrib :— Europe. 



Bot. Prov :— 19. ..30. 



Ireland: — Between Dunkerron and Killarney ; Kerry! Dr. Taylor. (1836.) 

 oo. Antrim. Dr. Moore. 



Spores .030— .040 mm. long, .005— .006 mm. broad. 



Var. Sarniense, Salw. white or cream-coloured, thick, tartareous, 

 colUculoso-verrucose ; apothecia albo-pruinose. 

 On maritime rocks, rare. 1847. 



Syn : -Chiodecton Sarniense, SalWi in litt. 1859. Mudd Man. 245. Chiodecto 

 petrwum, Del. 

 Geoo. Distrib i — Europe. 



