124 



hairs. Ch. .sphmrospermum, C. & E. lias the same habit and otherwise 

 much resembles this, but has the apical hairs more branching and the 

 sporidia larger (7-8 p) and globose. 



On the bass wood bottom and hickory hoops of a barrel standing 

 in a cellar at Newfield, N. J. and on an old wooden churn in a cellar, 

 at Manhattan, Kansas (Kellerman), on decaying paper, Columbia, Mo. 

 (Galloway), and Alabama (Atkinson). 



The mode of branching is similar to that in Ch. chartarum, Ehr , 

 the main axis being prolonged 10-15 p beyond the point of separation 

 or bifurcation, the prolongation being somewhat enlarged and hyaline. 

 In the Missouri specimens, the apical bristles were swollen at intervals. 

 This peculiarity was not observed in the other specimens. 



Ch. pannosum, Wallr. PI. Cr. Ger. p. 267., Rab. Deutschl. Kr. 

 Flora I, p. 227. Zopf. Entw. der Asc. (Chactomium), p. 276. 



Ch. velutinum, E. & E. Journ. Mycol. I, p. 90. 

 Exsicc. Kl. Herb. Mycol. II, 748. M. March. 1548. Roum. F. G. 51. Rab. F. E. 2025. 



Perithecia closely gregarious or also scattered and single, subglo- 

 bose, large (\-\ mm.), very fragile, dirty black; ostiolum large, short 

 and thick, papilliform and colorless; rhizoids (basal root-like hairs) 

 more numerous than in the other species. The perithecia are covered 

 with a dense coat of dark, rough, crisped and interwoven hairs, causing 

 them to appear confluent, forming continuous or partially interrupted, 

 dense, felt-like, black patches several centimeters in extent, much like 

 the subiculum of Ro&ellinia aquila. The lateral hairs are mostly simple 

 while the apical ones are longer, stouter and straighter, 7-8 p thick at 

 base and sparingly branched. Asci (sec. Zopf) club-shaped, with a 

 stipe-like base, reaching 100 p long by 15-20 p broad. Sporidia 

 viewed in front, broad-elliptical, plainly but briefly apiculate, viewed 

 edgewise, fusoid, 11-13 x 7-8 p. 



On a rotten maple log, Oregon (Carpenter). 



Ch. olivamini. C. & E. Grev. VI, p. 96. 



Exsicc. EH. N. A. F. 56. 



Perithecia gregarious, ovate-globose, about 250 p high by 200 p 

 broad, thickly and evenly clothed with soft, granular-roughened, flex- 

 uous, sparingly septate, simple, greenish-yellow hairs 3-4 p thick, with- 

 out any very distinct apical tuft of coarser hairs, as is usual in most of 

 the species. Asci oblong-clavate, p. sp. 35-40 x 1 2 p. Sporidia 

 crowded, globose-elliptical, apiculate at each end, yellowish-brown, 

 9-12x8-9 p, (mostly 9-11 x7-8 p), with one or more nuclei. 



On decaying stems of Erigeron, New Jersey and Louisiana. 



