'210 GEiPHIDEI [aETHONIA 



Dolgelley, Merioneth ; Palls of Clyde, Lanarkshire ; Barcaldine, 

 Argyll ; Dunkeld, Perthshire ; Old Dromore and Cromaglown, Kil- 

 lamey, Kerry ; Dronioland, Clare ; Adare, Limerick ; Shane's Castle, 

 Antrim. 



Var. pruinata A. L. Sm. — Thallus whitish, sometimes fur- 

 furaceous. Apothecia blackish, covered with a white pruina. — 

 Tars. concoZor and microstigma Mudd Man. pp. 249 ifc 250 (1861). 

 Spiloma gregarium vars. concolor and microstigii<a Turn, it 

 Borr. 1. c. Goniocarpon einnaharinum vars. concolor and mi- 

 crostigma Leight. Z. c. Artltonia cinnaharina var. pruinata Del. 

 ex Xyl. Lich. Scand. p. 2-57 (1861); Cromb. Lich. Brit. p. 102 ; 

 Leight. Lich. PI. p. 399 ; ed. 3, p. 422 incl. if. concolor and 

 iiticrostigma. 



Exsicc. Leight. n. 251. 



The white powdery apothecia are often arranged in a stellate form, 

 sometimes they axe solitary and depressed (var. Tnicrostigma), when 

 the thaUus also is white suffused it is var. concolor. 



Hah. On trees ia S. and X. England and in S.W. Ireland. — 

 B. M. Shanklin, I. of "Wight; near Becky Palls, Devon; near Lynd- 

 hurst, Xew Forest; St. Leonard's Forest, Sussex; near Dorking, 

 Surrey; Twycross, Leicestershire; Easby Wood, Airyhohne Wood 

 and Kildale, Cleveland, Yorkshire ; Eagle's Nest, Killamey, Keny. 



Var. anerythrea A. L. Sm. — Thallus whitish. Apothecia 

 brownish-black, prominent, naked. — Arthonia cinnaharina var. 

 anerythrea Nyl. I. c. ; Cromb. Lich. Brit. p. 102 ; Leight. Lich. 

 Fl. p. 400 ; ed. 3, p. 423. 



Differs from the species and the other varieties in the round 

 prominent apothecia without any pruina. 



Hab. On trees. — Distr. Rare in S. England and in S. and W. 

 Ireland. — B. M. Xear Becky Falls, Devon ; near Lyndhm-st, Xew 

 Forest, Hants ; Castle Bernard and Crosshaven, Cork ; Glencar, 

 Kerry. 



5. A. astroidestera Nyl. in Flora Ivii. p. 13 (1874). — Thallus 

 white or cream-coloured, thin, smooth. Apothecia dark-brown, 

 innate, slender, elongate, radiate or stellate ; spores 3-5-septate 

 (usually 4-septate), colourless, 0,021-26 mm. long, 0,007-8 mm. 

 thick ; hymenial gelatine blue with iodine. — Cromb. in Jourh. 

 Bot. xii. p. 149 (1874); Leight. Lich. Fl. ed. 3, p. 424. A. 

 armoricana Cromb. Lich. Brit. p. 103 (1870) (non Xyl.) ; Leight. 

 Lich. Fl. p. 401. A. puncliformis Mudd Man. p. 247 (1861) pro 

 parte ? (non Ach.). 



The specimens collected by Larbalestier and Crombie, now in the 

 British Museum, have 4-ceUed spores, the upper cell being larger than 

 the others, and resembling the spores of A. gregaria ; the' apothecia 

 are partly white-suflused, and have no trace of the red-colouring 

 matter usually to be found in that species. Mudd describes the 

 spores of his A. punctiformis as 3-septate, the upper cell largest. 



Hah. On hoUy or beech. — Distr. Eare in S. England and S. 

 Ireland. — B. M. L;\-ndhurst, Xew Forest, Hants. 



