141 



brown, 180-210 x 5-6 /i. Asci oblong, about 48x12 fj., 8-spored, sub- 

 sessile. Sporidia biseriate, obovate, uniseptate, hyaline, 1 2-1 3 x 4-4| /^. 

 On living leaves of Quercus laurifoUa, Florida (Martin). 



V. erysipheoides, E. & E. Journ. Mycol. Ill, p. 128. 



Perithecia gregarious, black, globose, about 100 ju diam., bioadly 

 perforated above, beset 'with scattering, rigid, black, continuous bris- 

 tles 40-70 X 5-6 //. Asci oblong, sessile, without paraphyses, 40-45 x 

 7-8 ;u. t^poridia crowded, fusiform, hyaline, slightly curved, 5-6- 

 nucleate, about 20 x 2^ /i. This differs from V. graminicola, "Winter, 

 in its smaller perithecia (80-110 n) with shorter, lateral bristles, and 

 in its narrower sporidia (2-2| fi). The number of bristles on a peri- 

 thecium is generally not over ten or twelve and they stand out hori- 

 zontally or nearly so, reminding one of some of the Erysiphem. 



On dead culms or sheaths of Panicum Curtisn, Louisiana (Lang- 

 lois). 



V. Barbula, (B. & Br.) 



Sphczria Barbula^ B. & Br. Ann. N. Hist. No. 870, tab. 10, fig. 20. 

 Venturia Barbula, B. & Br. Cke. Hndbk. No. 2784. 

 Exsicc. Rehm Asc. 293, EU. N. A. F. 792 (ya.r. foliicola). 



Perithecia subcespitose, globose, collapsing, rather thickly clothed 

 with short (25-35 x 4 /i), straight spines. Asci cylindrical, 60x6//, 

 with scanty paraphyses. Sporidia uniseriate, hyaline, uniseptate, 8-10 

 x4| II, often surrounded by a thin, gelatinous zone. 



On bark of pine trees, England and Germany. 



Var. foliicola (N. A. F. 1. c.) on dead leaves of Pinus yigidu, 

 still attached to the branches, in a fallen tree top, at Newfield, N. J.. 

 differs from the type in its foliicolous growth, scattered perithecia and 

 narrower sporidia (8-10 x 3-4 //. 



The typical form, on bark, has not yet (as far as we know) been 

 found in this country. 



V. cincinnata, (Fr.) 



Spharia cincinnata, Fr. S. M. II, p. 451. 

 Venturia cincinnata, Fr. Summa Veg. Sc. p. 405. 



Perithecia amphigenous, superficial, solitary, black, very small, 

 conic-cylindrical, smooth, ostiolum hardly visible, crowned with a tuft 

 of erect black hairs about as long as the diameter of the perithecium. 

 Sometimes the perithecium is also surrounded by hairs at the base. 

 On the upper surface of the leaves, the perithecia are less perfect and 

 nearly globose. 



