U2 



spores exude. When the epidermis falls away, there is seen a con- 

 tiguous, black, cortical crust raised into numerous pustules by the 

 hemispherical, black, smooth perithecia. 

 Under the epidermis of Hhvs glabra. 



1663. Sphoeria conspersa, Schw. — Gregarious or scattered, at 

 first covered by the epidermis which finally falls off. Ostiola erum- 

 pent in the form of a minute, concave disk. Perithecia numerous, very 

 black, of medium size, flattened at the base and vrhen the ostiolum falls 

 off, perforated. Perfect specimens are crowned with a sphseriiform 

 ostiolum half as large as the perithecium. The base of the peri- 

 thecium is immersed in the bark and the whole is stained and black- 

 ened by the exuding spores. 



On Rohinia viscosa, Nazareth, Pa. (Schw.). 

 Obturatce. 



1664. Sphceria Sclerotiuni, Schw. Syn. Car. 163. — Scattered, 

 erumpent. Perithecia subovate, dark brown. Ostiolum impressed, 

 opening at first narrow, then round. At first sight resembles a 

 Sclerotium, but it is a true Sphceria, regular ovate-globose, a line 

 high, nearly free, seated in a kind of receptacle under the epidermis. 

 Color when dry, dirty white, with a small, yellowish sack inside. 



On young branches, Carolina (Schw.). 



1666. Sphceria erumpens, Schw. Syn. Car. 209. — Subsimple, 

 scattered, erumpent. Perithecia ovate-depressed, ashy-brown, obso- 

 letely papillate, squamose below, smooth above. 



On dead branches of Smilax, Carolina. 



1 677. Sphceria Ruborum, Schw. — Scattered, gregarious or seri- 

 ate, soon throwing ofl' the epidermis. Perithecia ovate-globose or 

 hemispherical, subimmersed in the bark, black, rugose, comparatively 

 large, crowned with a punctate-rugose tubercle half as large as the 

 perithecium or sometimes much smaller. The upper part of the peri- 

 thecium finally breaks away, leaving the cup-shaped base. 



Common on dead stems of Rubus. 



1678. Sphceria olivascens, Schw. — Almost always covered by 

 the epidermis, causing an olive-black spot in the bark which is raised 

 by the minute, hemispheric-globose perithecia with their perforated 

 ostiola alone visible. 



On unknown twigs, Salem, N. C. 



1680. Sphceria amorphula, Schw. — Densely aggregated or even 

 cespitose, seated in the suljstance of the bark under the epidermis, 



