322 prRENocARPEi [akthopykenia 



Lich. Gcerm. p. 370 (1855) ). Vermcaria Lahurni Leight. Lich. 

 Fl. p. 435 (1871) ; ed. 3, p. 465. 



Exsicc. Leight. n. 254; Mudd n. 291. 



Easily confused with A. rliyponta ; it differs in the narrower, 

 2-ceUed spores. 



Hab. On labumtun and other trees. — Distr. Bare throughout the 

 British Isles. — B. M. Cirencester, Gloucestershire ; Ayton, Cleveland, 

 Yorkshire ; Trefriw, Carnarvonshire ; Aberfeldy, Perthshire. 



11. A. mierospila Koerb. Parerg. lich. p. 392 (1865). — 

 Thallus forming dull black filmy or roughish spots on the bark. 

 Perithecia minute, black, prominent, hemispherical, slightly 

 papillose above ; perithecial wall entire «"ith a thin wall under 

 the base ; spores colourless, linear-oblong, 1 -septate, small, 

 0,013—17 mm. long, 0,003-5 mm. thick, or sometimes a little 

 longer. — A. rhyponta Mudd Man. p. 303 (1861) (non Massal.). 

 Verrucaria rhyponta Borr. in Engl. Bot. Suppl. n. 2597, fig. 2 

 (1829) (non Ach.) ; Hook, in Sm. Engl. EI. v. p. 150 (excl. syn. 

 Ach.) ; Tayl. in Mackay Fl. Hib. ii. p. 89 : Leight. Angioc. Lich. 

 p. 37, t. 16, fig. 1 ; var. rhypontella ZSTyl. in Flora 1. p. 374 

 (1867) ; Cromb. /. c. V. capnodes Nyl. in Flora 1. p. 330 (1867) ; 

 Lindsay in Quart. Journ. Micros. Sci. ix. p. 351 (1869) ; Cromb. 

 Lich. Brit. p. 120 ; Leight. Lich. Fl. p. 438 ; ed. 3, p. 468 : 

 var. rhypontella Leight. Lich. Fl. p. 439 (1871) ; ed. 3, p. 468. 



Confused with A. rhyponta, but differs in the rougher more felted 

 thallus, the form and size of the spores and the habitat, it being often 

 found growing on the thallus of Graphis sp. 



Hab. On bark, associated with, or growing over, Graphis sp. — 

 Distr. Bare in S. and X. England and S. Ireland. — B. M. Sussex ; 

 Castle Bernard Park, Cork ; Armagh. 



12. A. Taylori Mudd Man. p. 302 (1861).— Thallus dark- 

 brown, thin, forming irregular determinate spots. Perithecia 

 black, minute, numerous, globose-conical, immersed at the base, 

 the ostiole miautely papillate ; perithecial wall entire, black ; 

 paraphyses free, slender ; asci elongate-clavate ; spores colourless, 

 fusiform, 1 -septate, constricted, the cells usual! v with two or 

 more guttulae, 0,025—30 mm. long, 0,004—5 mm. thick ; hymenial 

 gelatine yellow, the spores brown with iodine. — Verrucaria 

 Tnylori Carroll ex Nyl. in Maine et Loire Mem. Soc. Acad. iv. 

 p. 82 (1858) ; Cromb. Lich. Brit. p. 120 ; Leight. Lich. Fl. p. 438 ; 

 ed. 3, p. 467. 



Exsicc. CarroU Lich. Hib. n. 29. 



Hah. On trees, chiefly ash or oak. — Distr. Bare in S.W. England. 

 Xot uncommon in S. and S.W. Ireland. — B. M. Torquay, Devon; 

 Glenbower Wood, Dunscombes Wood, Castle Bernard Park and 

 Eostellan, Cork ; Dinish, Killamey and Valentia Island, Kerry ; Clare 

 Glen, Tipperary. 



13. A. aphorlsasa A. L. Sm. — ThaUus indicated by brownish- 

 black detached well-defined spots. Perithecia black, almost 



