polyblastia] verrucariace^ 303 



8. P. subinumbrata A. L. Sm. — Thallus greyish-brown, very 

 thill or subevanescent. Perithecia immersed in brownish thalline 

 warts ; perithecial wall black, entire ; spores similar to those of 

 P. inumbrata but smaller, 0,022-30 mm. long, 0,015-18 mm. 

 thick. — Verrucaria subinumbrata Nyl. in Flora Ixi, p. 246 (1878) ; 

 Cromb. in Grevillea vii. p. 97 ; Leight. Lich. Fl. ed. 3, p. 492. 



Perhaps only a subspecies of P. iri'mnbrata (Nyl. I. c). The 

 specimen in the herbarium of the British Museum collected by 

 Larbalestier at the same locality is a form of P. scotinos;pora with 

 small, very dark, muriform spores. 



Hob. On schistose rocks, Kylemore, Connemara, Galway (the only 

 locality). 



9. P. Sendtneri Krempelh. in Flora xxxviii. p. 67 (1855). — 

 Thallus whitish-grey, cartilaginous, incrusting, granular, unequal. 

 Perithecia black, minute, globose, semi-immersed, the ostiole 

 depressed ; perithecial wall entire ; paraphyses mucilaginous, 

 disappearing ; spores 8 in the ascus, almost colourless or pallid- 

 brownish, ovoid, muriform, 0,015-30 mm. long, 0,009-014 mm. 

 thick ; hymenial gelatine wine-red with iodine. — Verrucaria 

 Sendtneri Nyl. in Maine et Loire. Mem. Soc. Acad. iv. p. 33 

 (1858); Carroll in Journ. Bot. iii. p. 292 (1865); Leight. Lich. 

 Fl. p. 459 ; ed. 3, p. 490. 



The colour of the spores seems to vary a great deal, some authors 

 describing them as brownish, in the specimens examined they are 

 almost colourless. 



Hab. On mossy earth in alpine regions. — B. M. Ben Lawers, 

 Perthshire. 



10. P. gelatinosa Th. Fr. in K. Svensk. Vetensk. Soc. Nov, 

 Act. 1877, 8, p. 10. — Thallus thinnish, effuse, somewhat gelatinous, 

 dark -brownish or blackish. Perithecia moderate in size, semi- 

 immersed, somewhat prominent, the ostiole slightly depressed ; 

 perithecial wall entire ; paraphyses mucilaginous, disappearing, 

 ostiolar filaments numerous, distinct ; asci saccate-ciavate ; spores 

 8 in the ascus, oblong-ellipsoid, pale-brownish or almost colourless, 

 muriform, 0,030-45 mm. long, 0,012-21 mm. thick. — Verrucaria 

 gelatinosa Ach. Lich. Univ. p. 283 (1810) (non Nyl. in Maine et 

 Loire Mem. Soc. Acad. iv. p. 21 (1858)). V. niyrata Nyl. in 

 Act. Soc. Linn. Bord. ser. 3, i. p. 430 (1856) ; Cromb. Lich. Brit, 

 p. 110; Leight. Lich. Fl. p. 456; ed. 3, p. 489. Sphseromphalc 

 nigrata Mudd Man. p. 282 (1861). 



Leighton has described the spores as dark-brown, but Nylander 

 includes the species in a section with colourless spores. In the 

 specimens examined they are colourless or slightly brownish. 



Hab. On mossy earth in alpme places. — B. M. Ben Lawers (the 

 only British locality). 



