32 FUNGUS-FLOKA. 



Ailographum vagum, Cke., Hdbk., p. 766. 



On dry coriaceous leaves, as ivy, holly, &c. 



Very minute and scarcely visible to the naked eye, occur- 

 ring on both surfaces of the leaf, scattered or gregarious, and 

 sometimes confluent. 



Specimen examined from Desmazieres' Crypt. Prance, 

 ser. i., n. 1529, 



Doubtful species. 



Aulographum maculare. B. & Br., On Brit. Fung., 

 n. 968, in Ann. Nat. Hist., 1861, p. 13, pi. 16, f. 20; Sacc, 

 Syll., ii. n. 5578 ; Cke. Hdbk., p. 765, fig. 362. 



Ascophores for the most part simple, grouped in orbicular 

 spots with a tendency to become concentrically arranged ; 

 asci short, oblong ; spores oblong-clavate. 



On an old mat made of Tt/pha. 



Forming little orbicular black patches, in which the peri- 

 thecia are dispersed in a somewhat concentric fashion; peri- 

 thecia mostly simple ; asci short, oblong ; sporidia oblong- 

 clavate, 0'0005 inch long (= about 13 /a). Mycelium matted, 

 brown, producing here and there dark patches. (B. & Br.) 



I cannot find fruit in Berkeley's type specimens, conse- 

 quently it is uncertain as to whether the spores are 1-sep- 

 tate or continuous ; the blackest patches are up to 1 cm. 

 across, and due to brown, branched, septate hyphae, 3-4 /x. 

 thick ; ascophores rarely branched, narrowly elliptical ; ends 

 usually rather acute, up to |- mm. long. 



GLONIUM. Miihl. 



Perithecia innate then emergent, narrow and elongated, 

 rarely oblong or orbicular, sometimes radiatelj' arranged, 

 carbonaceous or horny-membranaceous, black, sometimes 

 seated on an interwoven layer of brown, septate hyphae, 

 dehiscing by a narrow, longitudinal slit ; asci cylindrical or 

 clavate, 8-spored ; spores 1-2-seriate, 1-septate, smooth, hya- 

 line, rarely pale brown at maturity; paraphyses slender, 

 usually branched and coloured at the apex. 



Gloniwm, Miihlenb., Cat. Am., p. 101 ; Eehm., Krypt.- 

 Flora, Hyst., p. 10 ; Sacc, Syll., ii. p. 731. 



