235 



a longitudinal septum, constricted at the septa, of a fine golden yellow- 

 brown color, 18-32 x 8-10 a. Paraphyses numerous and slender. 



On wood, Carolina and Pennsylvania (Schweinitz), New York 

 (Peck), Canada (Dearness). 



Specimens on dead stems of Spircea from New York State, have 

 asci (p. sp.) 75-80x12//, with abundant paraphyses. Sporidia ob- 

 liquely uniseriate, ovate-elliptical, yellow-brown. 3-septate and con- 

 stricted in the middle, finally darker and mostly 5- (exceptionally 

 6-7-) septate and muriform 18-22 x 8-10 p.. Berlese (1. c.) notices the 

 same variability in the number of septa. The Canada specc. on 

 Crataegus, have asci (p. sp.) 110x18-20 /*, sporidia oblong-fusoid, 

 5-7-septate with one or two of the cells divided by a longitudinal 

 septum, 25-35 x 10 //. 



L. tingens, (Ell.) 



(Plate 25) 



Lophiostoma tingens, EH. Bull. Torr. Bot. Club, VIII, p. 90. 

 Lophidium tingens, Sacc. Syll. 5527. 

 Exsicc. EH. N. A. F. 693. 



Perithecia buried in the wood, mostly compressed, thick and 

 leathery, of medium size. Ostiolum barely visible on the surface of 

 the wood, not projecting and only slightly compressed. Asci cylin- 

 drical, 80-90x10-11 jut, with filiform paraphyses. Sporidia uniseriate, 

 oblong, obtuse, brownish, 3-septate, with a longitudinal septum more 

 or less distinct, often slightly curved, variable in length, mostly about 

 16-18x7 jut. 



On dry, decorticated maple limbs, Newfield, N. J. 



L. obtectum, (Pk.) 



Lophiostoma obtectum, Pk. 30th Rep. p. 65. 

 Lophidium obtectum, Sacc. Syll. 5537. 



Perithecia numerous, immersed, slightly prominent, covered by 

 the epidermis which is pierced by the narrow, compressed ostiola. 

 Asci cylindrical or clavate. Sporidia variable, crowded or biseriate, 

 rarely uniseriate, at first pale, subacute and 1-3-septate, then obtuse, 

 oblong or subfusiform, 5-6-septate, colored, 25-33 ji long, usually con- 

 stricted at the septa and occasionally with longitudinal septa. 



On dead branches of Zanthoxylum Americanum, Bethlehem, 

 N. Y. 



L. minus, (Ell.) 



Lophiostoma minus, Ell. in Am. Nat. 1883, p. 316, 

 Lophidium minus, Sacc. Syll. 6179. 

 Exsicc. EH. & Evrht. N. A. F. 2d Ser. 1690. 



Perithecia erumpent, conical, \ mm. diam. and in height, with a 



