IfEPHROMIUM.] PELTIGEREI. 2S5 



4. N. subtomentellum Nyl. ex Cromb. Journ. Bot. 1874, p. 147. 

 Thallus subcoriaceous, somewhat expanded, rotundato-lobed, opaque, 

 rugulose, sinuato-lobed at the margins, dark lurid-brown ; beneath 

 rugulose, obsoletely tomentellose, brown (medulla white, K ). 

 Apothecia moderate, dark-red, the receptacle coriaceo-rugulose or 

 thinly areolato-granulose ; spores 0,020-24 mm. long, 0,006-7 mm. 

 thick. Nephromium Icevigatum var. suktomentellum Nyl. Not. Sallsk. 

 F. et Fl. Fenn. Forh. n. s. v. (1866) p. 116 : Leight. Lich. Fl. ed. 3, 

 p. 99. Brit. Exs. : Cromb. n. 149. 



Distinguished by the rugulose thallus and receptacle, and by the obsolete 

 tomeutum of the under surface, which with the size of the spennatia show 

 that it is a good species. The apothecia are numerous, occasionally rather 

 large and crowded. The spermogones, which are more frequent than in 

 any of the other British species, have the spennatia (ex Nyl. in lift.) 

 0,6025-0,0030 mm. long, 0,0010 mm. thick. 



Hob. On the trunks of old ash trees in mountainous regions. Dt'str. 

 Local and scarce in N. Wales, and among the S. Grampians, Scotland. 

 B. M. : Rhewgreidden, Merionethshire. Head of Loch Awe, Argyleshire ; 

 Glen Lochav, Killin, Perthshire. 



5. N. lusitanicum Nyl. Flora, 1870, p. 38. Thallus suborbicular, 

 rotundato-lobed, smooth and somewhat shining, crenate, crisp and 

 undulate at the margins, livid-chestnut or chestnut-brown ; beneath 

 glabrous, somewhat rugulose, pale (medulla yellow, K + purplish). 

 Apothecia small or moderate, reddish-brown, the receptacle crenato- 

 laciniate, incurved, the back minutely depresso-areolate ; spores 

 0,020-24 mm. long, 0.006-7 mm. thick. Leight. Ann. Mag. Nat. 

 Hist. 1870, p. 41; Lich. Fl. p. 106, ed. 3, p. 100. Nephromium 

 Iceviqatum f. lusitanicum Cromb. Lich. Brit. p. 28. Nephroma lusi- 

 tanicum Schaer. Enum. (1850) p. 323. Lichen resupinatus Eng. Bot. 

 t. 305 ; var. 2, With. Arr. ed. 3, iv. p. 71. Brit. Ers. : Mudd, n. 57 ; 

 Dicks. Hort. Sic. n. 23 ; Leight. n. 107 ; Larb. Lich. Hb. n. 288. 



Similar to N. l&vigatum, except in the colour of the medulla and the 

 chemical reaction. These differences, however, are of sufficient importance 

 to warrant our regarding it with Schaerer as a distinct species. With us 

 it is much more common than N. Iceviyatum, and is generally fertile. 



Hab. On the trunks of old trees, and on mossy rocks and boulders in 

 maritime and upland wooded districts. Distr. General and common in 

 S., W., and N. England, N. Wales, in S. and Central Scotland, and in N. 

 and S.W. Ireland. B. M. : Brechou and Guernsey, Channel Islands. 

 Lydd, Kent ; Lustleigh Cleeve and near Totnes, S. Devon ; near Res- 

 pring, Launceston, Liskeard, Penzance, and St. Austell, Cornwall ; Mal- 

 vern, Worcestershire ; Pentregaer near Oswestry, Shropshire ; Barmouth 

 and Aberdovey, Merionethshire ; Bettws-y-Coed, Carnarvon ; Island of 

 Anglesea ; Cleveland, Yorkshire ; Eglestone, Durham ; Mardale, West- 

 moreland ; Kwswick and Bassenthwaite Lake, Cumberland. New Gallo- 

 way, Kirkcudbrightshire : near Moffat, Dumfriesshire ; Dumbarton 

 Castle, Dumbartonshire ; Barcaldine, Inverary, and head of Locli Awe, 

 Argyleshire ; Glen Lochav and Pass of Leny, Perthshire ; Reeky Linn, 

 Forfarshire ; Craig Coinnoch, Braemar, Aberdeenshire ; Cawdor Woods, 

 Nairn; Loch Linnhe, Fort George, and Falls of Foyers, Inverness-shire ; 



