250 GRAPHIDEI [gRAPHIS 



pp. 364 & 428. Cha^his Cerasi Ach. Lich. Univ. p. 268 (1810) ; 

 S. F. Gray Nat. Arr. i. p. 502. G. scrij^ta var. recta Fr. 

 Lich. Eur. p. 371 (1831) ; Mudd Man. p. 239. G. serpentina 

 var. recta Leight. ia Ann. ^lag. Xat. Hist. ser. 2, xiii. p. 275 

 (1S54) ; var. horizontalis Leight. torn. cit. p. 271. Ojpegrapha recta 

 Humb. FI. Friberg. p. 57 (1793). O. hetulina Pers. in tJst. Ann. 

 Bot. vii. p. 31 (1794). O. Cerasi Pers. op. cit. xi. p. 20 (1794) ; 

 Engl. Bot. t. 2301. 



^E.rslcc. Leight. n. 244 ; Mudd n. 217. 



Easily recognized by the linear arrangements of the apothecia, 

 which are usually rather long and narrow l^f. recta), or slightly wider 

 and snbpruinose (f. horizontalis). In the specimens niarked 

 G. Cerasi they are mostly rather short and narrow. 



Sab. On the bark of various trees. — Distr. Somewhat rarer, but 

 coextensive with the species. — B. M. TVithiel, Cornwall ; Xewton 

 Bushel and Becky Falls, Devon ; New Forest, Hants ; St. Leonard's, 

 Sussex.; Shiere, Surrey; Epping Forest, Grosfield Woods, and Ulling, 

 Essex; Barmouth, Merioneth; Abdon, Shropshire; Nantyhelan, 

 Denbighshire ; Baysdale GiU, Cleveland, Yorkshire ; Beld Craig, 

 Moffat, Dumfriesshire ; Falls of Clyde, Lanarkshire ; Craigforth, 

 Stirlingshire ; near Cork. 



"Var. stellata Mudd Man. p. 239 (1S61). — Thallus similar to 

 the species. Apothecia short, rather plane and often pruinose, 

 arranged in more or less stellate groups, and tapering towards the 

 outer end. — f. stellata Leight. Lich. Fl. p. 365 ; ed. 3, p. 429. 

 Graphis serpentina var. stellata Leight. in Ann. Mag. Nat. Hist, 

 ser. 2, xui. p. 273 (1854). 



Exsicc. Mudd n. 221 (as var. diffracta). 



Sab. — On the bark of trees. — Distr. Somewhat rare in S. and 

 X. England. — B. M. New Forest, Hants ; near Crawley, Sussex ; 

 Messing, Essex ; Little Malvern, Worcestershire ; Ayton, Airyhohne, 

 and Easby Wood, Cleveland, Yorkshire. 



Var. minuta Mudd /. c. — Thallus similar to the species. 

 Apothecia short, simple, straight or rarely curved, narrow, rather 

 prominent, the margins thickish and uniform ; disc usually 

 narrow, sometimes slightly pruinose. — f. minuta Leight. Lich. 

 Fl. p. 363 (1871); ed. 3, p. 428. G. serpentina var. minuta 

 Leight. in Ann. Mag. Nat. Hist. ser. 2, xiii. p. 32 (1854). 



Distr. Bare in S. and K. England and S. Ireland. — S. M. St. 

 Breock, Cornwall ; Becky Falls and UUaeomhe, near Bovey Tracey, 

 Devon ; near Lyndhurst, New Forest, Hants ; Glynde, Sussex ; Weald 

 Hall Park, Essex ; Cirencester, Gloucester ; Airyholme Wood, Cleve- 

 land, Yorkshire ; Brown's Demesne, Biverstown, Cork. 



Tai-. serpentina Nyl. Lich. Scand. p. 252 (1861). — Thallus 

 superficial, thickish, white or greyish, tartareous, pulverulent, 

 determinate, or reduced to a thinnish layer. Apothecia 

 immersed in the thallus then more or less emmpent, crowded, 

 curved, simple or variously branched ; disc rather narrow, 



