212 GRAPHIDEI [aKTHONIA 



9. A. dispersa Xyl. Lich. Scand. p. 261 (1861).— Thallus 

 forming pale spots, Hinited but without a dark outline. Apo- 

 thecia smaJl, slender, somevrhat elongate, irregular and flexuose ; 

 epithecium dark-brown ; spores rather small, ovate-obloug, 

 1-septate, the upper cell somewhat broader, 0,010-13 mm. long, 

 0,004-5 mm. thick ; hymenial gelatine blue then violet-coloured 

 with iodine. — Opegrapha dispersa Schrad. in Ust. Ann. Bot. xxii. 

 p. 86 (1797) fide Nyl. 



Hab. On bark of trees. — Distr. Bare in S. England. — B. M. Xew 

 Forest, Hants ; Handcross, Sussex. 



10. A. excipienda Cromb. Lich. Brit. p. 104 (1871).— Thallus 

 greyish or whitish, determinate. Apothecia slender, elongate 

 punctiform or irregular ; spores colourless, obovate, 1-septate, 

 0,014-21 mm. long, 0,005-9 mm. thick ; hymenial gelatine wine- 

 red with iodine. — Leight. lich. Fl. p. 393 ; ed. 3, p. 416. 

 A. dispersa subsp. excipienda Xyl. Inch. Scand. p. 261 (1861). 

 A. hibernica Xyl. in Flora lix. p. 237 (1876) ; Cromb. in Grevillea 

 V. p. 28 ; Leight. Lich. Fl. ed. 3, p. 418. 



Exsicc. Larb. Lich. Hb. n. 194 (as J., hibernica). 



Perhaps only a subspecies of the preceding, but distinguished by 

 the constantly larger spores and the different reaction with iodine. 



Hab. On bark of trees.; — Distr. Rare in Central Scotland and in 

 S. and W. Ireland. — B. M. Ellin, Perthshire ; ilangerton, Kerry ; 

 KUlery Bay and near Leenane and Cloghan, Conhemara, Galway. 



11. A. punctilUformis Leight. in Trans. Linn. Soc. ser. 2, i. 

 p. 146, t. 22, figs. 26-28 (1876).— Thallus a mere film. Apo- 

 thecia scattered, blackish-brown, very minute, irregularly round- 

 ish, convex, internally brown ; spores oblong-clavate, pale- 

 brownish, 1-sept-ate, large, 0,029 mm. long, 0,013 mm. thick. — 

 Leight. in Grevillea iii. p. 113 i Lich. Fl. ed. 3, p. 417 ; Cromb. 

 in Joum. Bot. xiii. p. 141 (187-5). Specimen not seen. 



Hab. On holly. — Distr. Very rare in X. Wales (Trefriw, Carnar- 

 vonshire). 



Spores 3—6-septate, upper cell largest. 



12. A. aspersa Leight. in Ann. Mag. Xat. Hist. ser. 2, xviii. 

 p. 332, t. 11, figs. 11-15 (1856).— Thallus thin, smooth, indeter- 

 minate, greyish-green. Apothecia small, roundish or irregular 

 or substellate, the disc black, flattened or somewhat convex ; 

 spores obovate, 3-septate, colourless or pale-yellowish, the upper 

 cell largest, 0,013-15 mm. long, 0,005-6 mm. thick; hymenial 

 gelatine bluish with iodine. — Mudd Man. p. 248, t. 4, f. 97 ; 

 Cromb. Lich. Brit. p. 102 ; Leight. Lich. Fl. p. 395 ; ed. 3, p. 418. 



Exsicc. Leight. n. 248. 



Differs from A. radiata in the less stellate apothecia, and in the 

 septation and size of the spores. 



Hab. On bark of holly. — Distr. Bare in England and S. Ireland. 



