p 



248 GRAPHIDEI [gRAPHIS 



S. Ireland. — B. M. Ivy Bridge, Devon ; New Forest, Hants ; Wood- 

 ham Walter Common, Essex ; Hollybusli Hill, Malvern, Wor- 

 cestershire ; Tore Mt., Killarney. 



Form coacervata Leight. I. c. — Apothecia aggregate in small 

 scattered groups. 



Hah. On trees, especially holly. — Distr. Rare in S. and Central 

 England. — B. M. Epping Forest, Essex ; Holly Park, near Stokesay, 

 Shropshire. 



2. G. petrina Nyl. in Flora lix. p. 310 (1876).— Thallus 

 greyish-white or scarcely visible. Apothecia few, black, linear, 

 simple ; disc narrow, slit-like, the margins tumid, longitudinally 

 furrowed, often white-pruinose ; spores elongate, 7-11-septate, 

 brownish, 0,036-50 mm. long, 0,007-011 mm. thick.^ — Cromb. in 

 Grevillea v. p. 28 & in Journ. Bot. xiv. p. 362 (1876); Leight. 

 Lich. Fl. ed. 3, p. 427. 



Scarcely different except in habitat from the preceding species. 



Hab. On wet micaceous rocks. — Distr. Rare in W. Ireland. — 

 B. M. Near Renvyle, Connemaia, Galway. 



3. G. ramificans Nyl. in Flora lix. p. 575 (1876).— Thallus 

 whitish or creaiuy-white, thin, somewhat wrinkled (K -f yellow 

 then orange). Apothecia black, slightly prominent, branched in 

 a dendroid manner ; epithecium narrov/ ; proper margins thin, 

 sometimes furrowed, wavy and crisp ; apothecial wall colourless at 

 the base (dimidiate) ; paraphyses slender, conglutinate, swollen and 

 brown at the tips ; spores elongate-linear or cylindrical, colourless 

 (becoming pale-reddish?), 10-12-septate, 0,035-45 mm. long, 

 0,008-010 mm. thick.— Cromb. in Grevillea v. p. 107; Leight. 

 Lich. Fl. ed. 3, p. 433. 



Exsicc. Larb. Lich. Hb. without a number. 



Closely allied to G. striatula, a species from the tropics and 

 Portugal. The apothecia often lie closely parallel to each other, and 

 the margins are occasionally furrowed. The spores in the specimens 

 examined are colourless and measure up to 0,067 mm. long, 0,012 mm. 

 thick. 



Hab. On bark of holly. — B. M. Lough Feagh and Glendalough, 

 Connemara, Galway (the only localities). 



4. G. scripta Ach. Lich. Univ. p. 265 (1810).— Thallus thin, 

 membranaceous or subtartareous, greyish-white, cream-coloured 

 or olivaceous, even or wrinkled, effuse or limited by a black 

 line. Apothecia elongate, slender, immersed, then erumpent, the 

 thallus forming an outer white margin, or becoming superficial 

 and prominent, straight or curved, simple or branched ; margins 

 narrow, elevated, often wavy and crisp ; apothecial wall thick 

 and black, colourless at the base (dimidiate) ; paraphyses slender, 

 slightly swollen and brown at the tips ; spores colourless, some- 

 times becomiBg brownish, elongate-cylindrical, 7-10-septate, 



