545 



slightly discolored surface of tlic inner hark and covered by the epi- 

 dermis. Perithecia 4-(>. closely packed and mostly surrounded by a 

 thin, dark-colored stroma, rather large, nearly J mm. diam.. attenuated 

 above into short, cylindrical necks with ostiola convergent and per- 

 forated, piercing the epidermis, but not rising above it. Asci cylin- 

 drical, 180-250x18-20 p (180 x Is //.. Sacc.), short-stipitate, with 

 filiform paraphyses: 6-8-spored. Sporidia uniseriate, oblong-elliptical. 

 35-45 x 16-18 //., hyaline at first, becoming opake and almost black, 

 9-11 -septate, with a few of the cells at first divided by longitudinal 



-epta. finally densely muriform. 



On decaying branches of (Jin-rcn* </lh<i. Xewfield, X. J. 



When the epidermis is peeled oif. the clusters of perithecia remain 

 attached to the surface of the inner bark. The sporidia are scarcely 

 constricted at the septa. 



F. Canailensis, E. & E. (in Herb.) 



Stroma cortical. covered by the epidermis, orbicular. 1-3 nun. 

 diam.. sunk in the surface of the inner bark which is only slightly 

 raised above it. Peritliecia 3-10 in a stroma, of medium size, circinatc. 

 buried in the stroma. their short-cylindrical, rounded and obtuse, per- 

 forated ostiola sliglith raising and piercing the epidermis in a com- 

 pact faseiele. but hardly rising above it. Asci cylindrical, p. <p. 

 100 115 x 15 //, briefly stipitate. x-spored. Paraphyses filiform, sub - 

 li-elatinous. giittulate. indistinct. Sporidia uniseriate in some asci, 

 I Seriate in others, acutely-elliptical, o-.-eptate, the two inner cell- 

 mostly divided by a longitudinal septum, hyaline at first, becoming 

 olivaceous-brown, except the <ubapiculate end cells which remain 

 hyaline. 22-30x10-12 //. 



On bark of dead C<trjit!ttis, London. Canada (Dearness). 



The conidial stage is a Cnri/m-mit (issued in X. A. F. 257s as 

 C. umbonatum, Xees.) with subfusoid, G-i.)-se]itate conidia curved at 

 the ends, 40-60 x 8-10 //. borne on simple, stout liasidia 10-] 5x4-5 a. 

 The Cofym-Htii grows under the epidermis which is finally perforated 

 and slightly raised, and afterwards the circle of perithecia send up 

 their ostiola through the same opening. 



F. hormospora. Cke. Grey. XI A', p. 48. 



I'a/sa coiijuncta, Schw. (not Fries) Syn. X. Am. 13^3. 

 / 'aha hormospora, B. & C. in Herb. 



Perithecia few, crowded in irregular circles, disk erumpent. 

 whitish, pulverulent. Ostiola short, suhconnate. Asci ample, clavate, 

 Sporidia subelliptical, not appendiculate. constricted in the middle, 

 5-septate, at length merenchymatic, brown. Disk orbicular. 



On branches. Bethlehem, Pa. X"o measurements giyei 

 69 



