49 



acutely elliptical, brown, 7-8-septate and muriform, 20-27 x 12-14 // 

 (30-40x12 p. Martin). 



On scales of pine cones, Xew Jersey. 



CAPNODIUM, Mont. 



Aun. Sci. Nat. Ser. Ill, XI, p. 233. 



Mycelium effused, persistent, forming 1 a black, folt-like coating on 

 living leaves and limbs. Perithecia vertically elongated, sometimes 



O 



branched, generally fimbriate- lacerate at the vertex. Asci obovate or 

 elongated, 8-spored. Sporidia 4- or more-celled, often with both trans- 

 verse and longitudinal septa, yellow or yellow-brown. 



The members of this genus are but impefectly known: many of 

 the so-called species being only mycelium without any ascigerous peri- 

 thecia, and often without even pycnidial perithecia sometimes even 

 without conidia. 



A. Asf.'f fti'fstnt; sporidia muriform, 



C, salicimim, (A. & S.) (Plate 10) 



Dematium salicinum. Alb. & Schw. Consp. p. 368, 

 Fumago vagans, Pers. Myc. Eur. I, p. 9. 

 Cladosporium fumago, L,k. in Linn. Spec. Plant. 

 Torula fiimago, Chevall. Flor. Paris, I, p. 34. 

 Capnodium salicimim, Mont. 1. c. 



Capnodium Spfuzrotdeum, De Lacr. in Rab. F. 1$. 352. 

 C. Citri, B. & Desm. Molds, p. 11. 



Exsicc Rab. F. E. 352. Thuemen F. Austr. 169, 435. Thum. M. U. 1146. Cke. F. Brit. 

 2d Ser. 291. Linh. Fungi Hung. 358. Myc. March. 2231. Vize Micr. Fungi, 100. 



Mycelium widely effused, covering the whole surface of the leaves 



and vnimtr twisrs and even the trunk and branches to some extent, 







Perithecia fleshy, greenish-black, simple or branched, sessile or con- 

 tracted below, thickened above and opening with a subfimbriate or 

 lobed orifice (ostiolum). Asci obovate, sessile, 40-60 x 20-25 //, 6-8- 

 spored. Sjtoridia crowded, obovate. obtuse at the ends, 3-4-septate 

 and often with a longitudinal septum, subconstricted at the septa, dark 

 brown, 22-26x9-13 //. 



In the specimens figured on pi. 10. the sporidia were elliptical, 

 hyaline, 3-septate. one of the cells sometimes divided by a longitudinal 

 septum, 12-15 x4-5 //. crowded in asci about 60 x 10 //, with abundant 

 paraphyses. Perithecia subovate, with a short, conical ostiolum. 



On Populus tremuloides (limbs) and on Negundo aceroides, 

 Montana (Kelsey). 



Winter, in Die Pilze, gives as probable forms of this species, 

 C. elongatum, Berk. <fr Desm.. C. expansum, Berk. & Desm.. and 

 C. Persoonii, Berk, cv Desm., at least as they are represented in 



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