Th. ambletnm, (C. & E.) 



416 



a ambleia, C. & E. Grev. VII, p. 10. 

 Thyridium ambleium, Sacc. Syll. 3993, Cke. Syn. 3985. 



Perithecia scnttered, black, subpromiiient, covered. Asci clavate 

 <-\ lindrical. Sporidia broad- lanceolate or acutely elliptical, constricted 

 in the middle, about 5-septate, yellow-brown. 15-20x8-10 // (25 xlO a. 

 Tke.). 



On dead limbs of Gary a and Azalea, Ncwfield, N. J. 



The specc. of this species are poor and unsatisfactory. 



Th. personhtuiti, (Cke. & Hark.) 



SpJufria pe.r sonata, Cke. & Hark. Grev. XIII, p. 20. 

 Thyridium per sonatunt^ Sacc. 83'!!. 7124, Cke. Syn. 39^6. 



Lignicolous. Perithecia scattered, included in an elliptical, ele- 

 vated. gray or black tubercle pierced by the short, inconspicuous 

 ostioluni. Asci cylindrical, 8-spored. Sporidia uniseriate, elliptical- 

 constricted in the middle, 3-septate. with 1-2 longitudinal septa, bright 

 brown, 18-20x10^. 



On decorticated Acacia. California (Harkness). 



We have seen no specc. of Th. personatum, Cke. & Hark., but 

 the description agrees in all respects with that of TJi. lividum. 



Th. Cauadense, E. & E. (in Herb.) 



Perithecia scattered or gregarious, on the more or less bleached 

 surface of the wood, minute (J mm. or less), covered by a thin, oblong 

 or lanceolate, black shield 1-1| mm. long and pierced in the center 

 by the papilliform ostiolum. Asci cylindrical, subsessile, paraphysate. 

 100-1 20 x 12-15 fjL. Sporidia uniseriate. obovate-oblong, 5-7-septatc 

 and muriform, hyaline, 20-27 x 10-13 IJL. 



On old (spruce)? logs. Lake Nipigon, Ontario, Canada (Macoun). 



Outwardly this much resembles Th. lividum. but the shield it- 

 thinner. Perithecia much smaller, sporidia larger and hyaline. 



Th. cingulatum, (Mont.) 



Sphceria cingulata, Mont. & Fr. in Mont. Syll. No. 833. 

 Thyridium cingulatum, Sacc. Syll. 3992, Cke. Syn. 3982. 



Covered, blackening the surface with the discharged sporidia < 

 cattcred. black, Stronia pulverulent, cortical, covered above by a 

 concep'tacle resembling a rough, hemispheric-conical pseudo-peri the- 

 cium. Perithecia globose, one in each stroina, with a moderately long 

 neck terminating in a shining, papilliform, deciduous ostiolum. Asc; 

 clavate, stipitate. Sporidia oblong, 28x9 //, 5-septate and muriform 

 constricted in the middle, brown, 



