530 







very short, their apices united in a minute, unequal, black disk exud- 

 ing a minute central globule. 



On branches of Syringa, Bethlehem, Pa. (Sclnv.). 



Sporidia (see. Stevenson) subelliptical, hyaline, 22Jx_6J //. 



Saccardo (1. e.), on the authority of Quelet, gives the sporidia as 

 lanceolate, 4-gtittulate, 20 /j. long, with a bristle-like appendage at 

 cadi end, and places the species in Diaportke (Chorostate). 



Cr. vasculosa, (Fr.) 



SpJuzria vasculosa, Fr. S. M. II, p. 408. 

 Valsa vasculosa, Stev. 1. c. 



Circinate. Perithecia subovate. Ostiola long, thickened above 

 and joined in an opake, transversely erumpent disk. An enigmatical 

 species, on account of the great number of species on birch, yet cer- 

 tainly distinct from Sphceria (Diatrypellci) melasperma, &c. From 

 Calosphceria princeps, Tul., to which it is allied, it differs in the 

 position of the perithecia and the ostiola dilated at the apex and form- 

 ing a disk. 



On Prunus, Bethlehem, Pa. (Schw.). 



Sporidia (sec. Stev.), cuneate, nucleated, 19 x 12J /JL. 



(<r. lentagiiiis, (Rehm). 



Cryptosporella lentaginis, Rehm in litteris and in Sacc. Syll. 6026. 



Pustules small (1 mm. diam.). Perithecia mostly but one in a 

 pustule, large (J mm. diam.), soft, whitish inside, obtuse-conical from a 

 globose base, contracted above into the stout, obtusely conical ostiolum 

 which barely pierces the slightly elevated epidermis and is soon 

 broadly perforated. Asci clavate, stipitate, 40-50 x 8-9 t u. aparaphy- 

 sate, 8-spored. Sporidia biseriate, cylindrical, curved, or nearly 

 straight, continuous, 2-3-nucleate, hyaline, 12x2 [JL. 



On dead Viburnum lentago, Iowa (Holway). 



The inner bark is uniformly blackened, but the numerous small 

 -tromata are light-colored within and appear as light-colored spots in 

 a longitudinal section through the bark. The species is anomalous in 



having for the most part only a single perithecium in a stronia, 

 Tr. aiirea, Fckl. Symb. p. 193. 



Valsa aiii-ca, Fckl. Knum. Fung. Nassov. p. 53, fig. 20. 

 Vaha ainyxiialiiia, Cke. Seem. Journ. (1866). 

 Valsa rutila, Till. Sel. Carp. II, p. 197. 

 Civptosporella aiirea, Sacc. Syll. 1803. 

 Exsicc. Rab. F. E. 1940. 



Stroma conical or convex from an orbicular base, generally more 



