ADDENDA 353 



epispore, 0,006-8 mm. in diameter ; hymenial gelatine blue then 

 sordid wine-red with iodine. 



Belongs to the Biatora section of Lecidece, and from the descrip- 

 tion of Lecidea ruhidula is allied to that species. The excessive 

 number of spores is constant in the apothecia examined. 



Hab. On the soil in a disused clay -pit. — B. M. Little Bowden, 

 Northamptonshire (collected by H. P. Keader). 



Part ii. p. 75, after L. lapicida. 



Lecidea declinascens Nyl. in Flora Ixi. p. 243 (1878). — 

 Thallus ashy-greyish, deeply cracked-areolate, the areolae con- 

 tiguous or dispersed. Apothecia black, at first plane and mar- 

 ginate, often confluent, becoming turgid and immarginate ; 

 hypothecium dark -brown ; paraphyses slender, non-septate, dark- 

 bluish-green at the tips; spores ellipsoid-oblong, small, 0,010-14 

 mm. long, 0,005-6 mm. thick ; hymenial gelatine blue with 

 iodine. 



Differs from L. lapicida var. declinans Nyl. in the non-septate 

 paraphyses. The specimen sent by J. A. Martindale was determined 

 by Nylander. 



Hah. On rocks. — B. M. Red Screes, Westmoreland. 



Part ii. p. 109, after B. resinee. 



Biatorella campestris Th. Fr. Gen. Heterolich. p. 86 (1861) 

 & Lich. Scand. p. 398. — Thallus scanty, granular or none 

 proper. Apothecia small, waxy, scattered, sessile, closed then 

 open, marginate, becoming flat or convex, reddish flesh-coloured, 

 the margin disappearinuj ; paraphyses slender, septate, colourless, 

 somewhat bent and swollen at the tips ; asci elongate-cylindrical, 

 or clavate, thick-walled, about 0,090-120 mm. long, 0,015-18 

 mm. thick or longer and narrower ; spores, many in the ascus, 

 cylindrical, straight, 0,007-8 mm. long or rather longer, 0,003 

 mm. thick. 



Hah. Among mosses, and growing over Nostoc or soil. — B. M. 

 Braunton Beacon, Devon (collected by E. M. Holmes). 



Part ii. p. 214, under Arthonia pruinata. 



Inoderma byssacea S. F. Gray, Nat. Arr. i. p. 498 (1821). — 

 " Thallus rather leprous, cobwebby, dirty-white ; apothecia very 

 small, nearly globular, half-sunk, pierced, inside black." — 

 Sphseria byssacea Weig. Obs. Bot. p. 42, t. 2, fig. 9 (1772). 



Considered by Nylander (Flora xxxviii. p. 297 (1855) ) as the 

 spermogones of Arthonia pruinosa {A. pruinata) ; by Almquist 

 (K. Svensk. Vet.-Akad. Handl. xvii. n. 6, p. 25 (1880) ) as Arthonia 

 byssacea ; and by Arnold (Flora Ixvii. p. 594 (1884) ) as belonging to 

 Lccanactis byssacea. 



Hah. On the trunks of trees. 

 II. 2 A 



