334 PYRENOCARPEI [PORINA 



niin. long, 0,003-5 mm. thick — Biatora leptalea Dur. & Mont. 

 Fl. d'Alg. i. p. 268 (1849). Verrucaria lectissima f. leptalea Nyl. 

 in Maine k Loire Mom. Soc. Acad. iv. p. 38 (1858) ; subsp. 

 leptalea Cromb. Lich. Brit. p. 117 ; var. leptalea Leight. Lich Fl. 

 p. 443 ; ed. 3, p. 475. V. leptaleella Nyl. in Flora lix. p. 237 

 (1876); Oromb. in Grevillea v. p. 29; Leight. Lich. Fl. ed. 3, 

 p. 480 pro parte. 



Exsicc. Larb. Lich. lib. without number. 



V. leptaleella was given specific rank by Nylander on account of its 

 narrower spores ; they resemble, when mature, those of P. leptalea. 



Hah. On trees. — Distr. Rare in S. England, Wales, and S. and W. 

 Ireland. — JB. M. Near Crosshaven and Glenbower, Cork ; McCarthy's 

 Island, Dinish and Eagle's Nest, Killarney, Kerry; Delphi, Killery 

 Bay, Connemara, Galway. 



4. P. succina A. L. Sm. — Thallus dark-brownish, thin, effuse. 

 Perithecia numerous, large, amber-coloured throughout, hemi- 

 spherical-conical with a papillate ostiole ; perithecial wall dimidiate, 

 spreading at the base ; paraphyses slender, distinct ; asci linear- 

 clavate ; spores 8 in the ascus, colourless, fusiform, 7-septate, 

 large, 0,046 mm. long, 0,005-8 mm. thick. — Verrucaria succina 

 Leight. in Grevillea iv. p. 78 (1875) & in Trans. Linn. Soc. 

 ser. 2, i. p. 145, t. 2, figs. 8-12 (1876) ; Lich. Fl. ed. 3, p. 483 ; 

 Cromb. in Journ. Bot. xiv. p. 363 (1876). F. glohosa Tayl. ex 

 Nyl. in Flora Ixvi. p. 534 (1883) ; Cromb. in Grevillea xii. p. 91. 



Considered by Leighton to be closely allied to P. faginea, but its 

 affinity is rather with P. lectissima, from which it differs chiefly in 

 the larger perithecia and spores. 



Hah. On rocks. — Distr. Rare in S. and W. Ireland. — B. M. Black- 

 water, Wexford. 



Perithecia dark-coloured; spores 3-sepiate. 



5. P. carpinea A. Zahlbr. in Engler & Prantl Pflanzenf. i. 

 1*, p. 66 (1903). — Thallus thin, developed within the bark, grey, 

 olive, or dark-brown, smooth or somewhat wrinkled, effuse or 

 determinate. Perithecia small, black, shining, sessile and sub- 

 globose ; perithecial wall dimidiate ; paraphyses numerous, slender, 

 involved in mucus but distinct, not branched ; asci elongate- 

 cylindrical or -clavate ; spores fusiform, 3-septate, colourless, 

 usually 0,016-20 mm. long, 0,004-6 mm. thick, sometimes longer 

 and slightly thicker. — Verrucaria carpinea Pers. ex Ach. Meth. 

 p. 120 (1803). V. fusiformis Leight. Angioc. Lich. p. 42, t. 18, 

 fig. 2 (1851). V. chlorotica f. carpinea Cromb. Lich. Brit. p. 116 

 (1870); Leight. Lich. Fl. p. 445; ed. 3, p. 473. Arthopijrenia 

 macularis yeht. fusiformis Mudd Man. p. 301 (1861), 



Exsicc. Bohl. n. 82 (as Verrucaria olivacea) ; Leight. n. 99 ; 

 Mudd n. 289 ; Carroll Lich. Hib. n. 34. 



Similar to P. cJilorotica in the form and contents of the perithecia, 

 but differing in habitat and in the structure of the thallus. There 



