IIS 



Perithecia cespitose, ovate-globose, J- \ mm. diam., dull ml. 

 densely tuberculose-granular. Ostiola not prominent, more or less 

 distinctly stellate-cleft and finally collapsing slightly. Asci eublanceo- 

 late, 75-80 x 10-12 /i, without any distinct paraph yses. Sporidia sub- 

 biseriate, hyaline, oblong-elliptical, 3-septate, slightly curved, ends 

 obtuse, 18-22x7-9 /i. The conidial stage is a Tubercvlaria about 

 2 mm. high, bursting out in a seriate manner through cracks in the 

 outer bark, having an orange-red head and brick-red, stipitate base. 

 The perithecia originate from the lower or medial part of the stipitate 

 base, and finally entirely surround and overtop the orange-colored 

 heads of conidia, which are either entirely hidden or remain partially 

 visible in the midst of the dense clusters of perithecia. Conidia oblong- 

 cylindrical, hyaline, continuous, 5-7 x 2| fi. 



On bark of dead elm, Ottawa, Canada (Macoun), London, Canada 

 (Dearness). 



C. polythalama, (Berk.) 



Nectria polythalama, Berk. Fl. New Zealand II, p. 203, Grev. IV, p. 46. 

 Nectria aurigera, B. & Rav. Grev. 1, c. 

 Exsicc, Rav. Car. Ill, 54. id. V, 60 (under the name of A r . aurig-era, B. & Rav.) Ell. 

 N. A. F. 79. 



Erumpent, cespitose, stroma pale brick-red, mostly subelliptical. 

 Perithecia globose, about \ mm. diam., covered with a yellow powder. 

 Ostiolum papilliform, collapsing. Asci sublanceolate, p. sp., 55-60 x 

 12-15 //. Sporidia subbiseriate, oblong-cylindrical, straight or slightly 

 curved, yellowish, 6-8-septate, 20-24 x 5-6 jl Var. flavitecta, B. & C. 

 (Grev. 1. c), on Kerria Japonica, has the "sporidia larger and quadri- 

 septate, sometimes with a gelatinous coat." 



On Fraxinus and Chionanthus, Carolina and New Jersey. 



There is no shadow of difference in the asci and sporidia, at least 

 as the two are represented in Rav. Fungi Car., between Nectria 

 aurigera, B. & Rav., and N. polythalama, Berk., and if, as there i> 

 no reason to doubt, the specimens there distributed are authentic, the 

 two species are the same, and, in that case, the specific name, polythal- 

 ama, would have precedence. 



C. chlorinella, (Cke.) 



Nectria chlorinella, Cke. Grev. XI, p. 168. 

 Exsicc. Rav. F. Am. 736. EH. & Evrht. N, A. F. 2d Ser. 2546. 



Gregarious, ovate-globose, lemon-yellow, about | or 1 mm. high. 

 \ mm. broad, slightly contracted below, woolly-torn en lose except the 

 bare, black, strongly papillose ostiolum. Asci elavate-cylindrical, 

 15 



