melaspileaJ graphidacb^ 227 



sparsely scattered ; disc narrow, slit-like ; margins tumid, in- 

 curved ; spores obovate, brown, 1-septate, constricted, 0,020- 

 23 mm. long, 0,010-11 mm. thick; hymenial gelatine faintly 

 blue with iodine. — Opegrapha lentiginosula Nyl. in Flora xlviii. 

 p. 355 (1865); Carroll in Journ. Bot. iv. p. 24 (1866); Cromb. 

 Lich. Brit. p. 100; Leight. Lich. Fl. p. 373; ed. 3, p. 395. 



Hah. On pines in subalpine regions. — B. M. Glen Palloch and 

 Black Wood of Eannooh, Perthshire. 



3. M. diplasiospora A. Zahlbr. I. c. — Thallus cream-coloured, 

 thin, smooth,, eifuse. Apothecia small, black, oblong, somewhat 

 immersed, disc rather expanded, the margins thin, elevated, 

 iiiflexed ; spores obovate, dark-brown, 1-septate, constricted, 

 0,027-32 mm. long, 0,012-16 mm. broad; hymenial gelatine 

 pale blue with iodine. — Opegrapha diplasiospora JSTyl. in Act. 

 Soc. Sci. Fenn. vii. p. 476 (1863) ; Carroll in Journ. Bot. vi. 

 p. 100 (1868) ; Cromb. Lich. Brit. p. 100 ; Leight. Lich. Fl. 

 p. 373 ; ed. 3, p. 395. 



Similar in appearance to M. lentiginosa, but the apothecia are 

 rather larger and the spores larger and darker coloured. 



Hah. On holly in upland districts. — Distr. Bare in S.W. Ireland. — 

 B. M. Tore Mt. and Cromaglown, Killamey, Kerry. 



4. M. ochrothalamia Nyl. in Flora xlviii. p. 355 (1865). — 

 Thallus effuse thin, sordid-greenish. Apothecia black or brownish, 

 minute, adnate, roundish, plane, obsoletely margined, ochraceous- 

 yellow within ; spores ovoid, 1-septate, brownish-black, 0,017- 

 21 mm. long, 0,007-0,010 mm. thick; hymenial gelatine not 

 tinged with iodine. — Carroll in Journ. Bot. vi. p. 101 (1868); 

 Cromb. Lich. Brit. p. 106 ; Leight. in Lich. Fl. p. 405 ; ed. 3, 

 p. 436. 



Allied apparently to M. arthonioides Nyl. (in Act. Soc. Linn. 

 Bord. ser. 3, i. p. 416 (1856)), a plant of France, Switzerland and 

 Algiers, which may also occur in England, but differs in the colours 

 of the apothecia internally, and of the larger spores. The specimens 

 seen are well fertile. 



Hab. On smooth bark of trees in upland wooded districts. — Distr. 

 Bare in S. and W. Ireland. — B. M. Glenbower Wood and near Ennis- 

 kean, Cork; Mangerton, Killarney, Kerry. 



5. M. amota Nyl. in Flora 1. p. 178 (1867).— Thallus effuse, 

 whitish or scarcely visible Apothecia black, innate, moderate 

 in size, roundish or angular ; margins thin, uneven ; hypothecium 

 thin, dark-brown ; paraphyses slender, very few ; epithecium 

 brownish or yellowish-brown ; spores 4 to 8 in the ascus, ellip- 

 soid-ovoid, 1-septate, constricted in the middle, colourless or 

 faintly brownish, 0,016-22 mm. long, 0,007-0,010 mm. thick; 

 hymenial gelatine and asci slightly and evanescently blue with 

 iodine. — Carroll in Journ. Bot. v. p. 259 (1867) ; Leight. in Ann. 



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