44.") 

 I), tortuosa. (Fr.) 



Sph&ria tin tuosa, Fr. S. M. II, p. 395. 



I'aha tortuosa, Cke. Valsei of the U. S. 125, Cke. Syu. 2033. 



Diaporthe tortuosa, Sacc. Syll. 2441. 



Peritliecia globose, glabrous, smooth, circinate-crowded in the 

 substance of the inner bark, and covered by a siibprominent, cortical 

 pustule. Ostiola converging within the pustule, then faseiculate-erum- 

 pent, short, subdivergent, nearly, smooth or elongated, deflexed, sub- 

 nodose, with the habit of Calosphceria pulchella. 



In Schw. Syn. X. Am. Xo. 1450. this species is said to have been 

 found in Xew Jersey, on a pine limb infested with Peridermium Pint; 

 verv rare. 



, 



The spec, in Herb. Seliw. labeled SphctTta tortuosa, Fr., is the 

 Caliciopsis pinea, Pk.. which is certainly not the Sphcer/</ tortiiosa, 

 Fr. Whether Schweinitz was mist;iken in his determination, or the 

 error lias resulted from Mime confusion of labels, we can not sav, but 



i 



incline to the former alternative, as the name (in Schweinitz' hand- 

 writing apparently) is written on a piece, of paper to which the speci- 

 men is Allied. 



B. Perithecia gregarious, more or less sunk in the ivood. -irhich /* 



often blackened on the surface and circumscribed by 



a black line within (Euporthe). 



On dicotyledonous plants. 



(a) Arboricolce. 



D. concrescens, (Schw.) 



Sphesi'ia concrescens, Schw. Syn. N. Am. 1301. 

 Diaporthe concrescens, Cke. Grev. XIII, p. 38. 



Covered by a kind of black crust formed from the bark, trans- 

 versely erumpent, orbicular or elliptical, with the disk concave, sur- 

 rounded by the substellate-ruptured epidermis and an elevated margin. 

 1-1 1 cm. long. In this crust the perithecia are partly sunk, globose- 

 depressed, minute, attenuated above into a cylindrical ostiolum rather 

 thick and somewhat exserted. Perithecia with a light colored 

 nucleus, at length changing their form and becoming conic-cylindrical. 

 Sporidia (sec. Cke. 1. c.) fusiform. 4-nucleate. then uniseptatc. 12 // 

 long. 



On dead stems of Kibes aurcurn (cult.), Bethlehem. Pa. (Schw.). 



Allied to D. recondita, Sclnv.. hut differs in its longer sporidia. 

 as well as in some other characters. Considered bv Schweinitz as a 



V 



good species and quite distinct. 



