ORBILIA. 147 



narrow near the margin, and finally running out into thin- 

 walled, septate, hyaline hairs, 25-50 x 5-6 p., which form 

 the irregular margin ; many of the external cells of the 

 excipulum also run out into short, obtuse hairs; asci nar- 

 rowly clavate, pedicel long, slender, crooked, 8-spored ; spores 

 irregularly 2-seriate, hyaline, continuous, cylindric-fusiform, 

 12-15 X 2-2-5 p.; paraphyses about 1 //, thick, tip fusiform, 

 apex acute, the thickened apical portion 10-12 x 4-5 p., 

 sometimes with a median septum, hj'aline. 



Peziza lasia, B. & Br., Ann. Nat. Hist., n. 1391, ser. 4, 

 vol. ii. p. 347, t. viii., fig. 10 (1873). 



Calloria lasia, Phil., Brit. Disc., p. 327. 



On bark and wood of elm. 



Type specimen examined, also specimens in Phil., Elv. 

 Brit., n. 117. and Rabenh., Fung. Eur., nov. ed., n. 1515. 



A well-marked species, characterised by the large lance- 

 shaped or fusiform tips of the paraphyses, which are acute 

 at the apex. The amount of down on the exterior of the 

 excipulum varies considerably ; sometimes it surrounds the 

 base of the ascophore, as in 0. auricolor. 



Orbilia leucostigma. Fries, Summa Veg. Scand., 

 p. 357 ; Sacc., Syll., viii. n. 2591. 



Gregarious or scattered, sessile, fixed by a central point, at 

 first closed then expanding and becoming more or less plane, 

 often with a central dimple ; thin, whitisu, and translucent 

 when moist, becoming slightly raised and incurved at the 

 margin, rigid and yellowish when dry, ^1 mm. across ; 

 excipulum parenchymatous, cortical cells subquadrate, 

 slightly elongated radially, becoming smaller towards the 

 entire margin ; asci narrowly clavate, 8-spored ; spores 

 hyaline, continuous, smooth, elliptical, 3-4 x 1 ' 5 p., 1-seriate ; 

 paraphyses very slender, tip abruptly almost globose, 34 p 

 broad. 



Peziza leucostiyma, Fries, Obs. Myc., i. p. 165. 



Calloria leucostigma, Phil., Brit. Disc., p. 330. 



On dead wood and bark. 



Specimen determined by Berkeley examined. 



When examined under a pocket-lens resembles 0. inflatula 

 and 0. luteo-rubella ; differs from the former in the knobbed 

 paraphyses, and from the latter in the smaller spores. 



L 2 



