532 Pyrenomycetse, Perisporiacefe, Perisporiene. Pleuroascus. 



ceterum glabris; ascis numerosis, globosis, 18-20 ;j.. diam. v. oblon- 

 go-piriformibus 20-25 « 14-17, cito diffluentibus, 6-8-sporis; spori- 

 diis ellipticis utrinquo acutis, 8-10 « 5, primum hyalinis demum 

 distincte dilute fuligineis. 



Hab. in fimo Capreoli capraeae, Cavise Cobayae, Ovis 

 Burrhel, 0. Vignei, Kew Britanniae. 



ARACHNOMYCES Massee et Salmon, Coproph. fungi II p. 68 (1902) 

 (Etym. ab arachne et myces). — Perithecia globosa, simplicia, 

 astoma, membrauacea, parenchymatica, appendicibus fuscis eumor- 

 phis instructa. Asci minuti, numerosi, globosi ; sporidia primum 

 conglobata, continua, fusca. — A Pleuroasco Mass. et Salm. subiculi 

 defectu et appendicibus fuscis, a Magnusia Sacc. ascis globosis et 

 sporidis conglobatis differt. 



1. Arachnomyces nitidus Mass. et Salm. 1. c. fig. 127-131. — Peri- \~<r, 

 theciis globosis 100-350 a. diam., nigris, nudis, nitidis, tenui-mem- 

 branaceis, fragilibus; contextu parenchymatico e cellulis polygo- 



nis irregularibus 5-10 ;j.. latis composito; appendicibus e parte 

 perithecii inferiore orientibus, paucis, flexuoso-contortis, atro-fuscis 

 5-6 (j.. latis nitentibus, semiopacis, septatis, perithecii diametro 

 5-7-longioribus, apice rectis v. simpliciter circinatis; ascis nume- 

 rosissimis, subglobosis circ. 10 ;a. diam., mox evanescentibus; spo- 

 ridiis octonis primum conglobatis, sphaeroideo - compressis, 3-4« 

 2,5, fuscis. 



Hab. in plantis putridis, Kew (C. Crossland), et in fimo m u- 

 rino, Thornton Hough, Cheshire Britanniae. 



2. Arachnomyces sulphureus Mass. et Salm. 1. c. fig. 55-60. — Pe- i~' ,s 

 ritheciis globosis 500-730 ;x. diam., superficialibus, indumento sul- 

 phureo arcte adhaerente obtectis, tenui-membranaceis, fragilibus; 

 contextu parenchymatico e cellulis polygonis irregularibus, 5-10 



a. latis composito, basim versus appendicibus paucis flexuosis 5- 

 6 a. latis, perithecii diametro 3-4 longioribus, divorgentibus, atro- 

 fuscis, nitentibus, semiopacis, septatis, apice circinatis v. circinato- 

 contortis, cinctis : ascis numerosissimis, minutis, globosis 7-8 ;j.. 

 diam., mox evanescentibus; sporidiis sph.rroideo-compressis 3-4« 

 2,5, fuscis, octonis, conglobatis. 



Ilab. in nido vetusto Bombi spec. Kew Britannia'. 



PLEUROASCUS Mass. et Salm. — Syll. XVI p. 1123. 



1. Pleuroascus Nicholsoni Mass. et Salm. Coproph. fungi I, p. 330, f. 25. 1799 



