264 



spots, very small. Asci clavate, 30 x 10 //. Sporidia elliptical, 6 x 3//. 

 On leaves of Acer rubrum, South Carolina. 



L. Cucurbitacearum, (Schw.) 



Sphceria Cucurbitacearum, Schw. Syll. N. Am. 1699. 



Sphcerella Cucurbitacearum , Cke. 1. c. 



Lcestadia Cucurbitacearum, Sacc. Syll. 6014, Cke. Syn. 5269. 



Perithecia emersed-innate, hemispherical, smooth, very minute, 

 shining, membranaceous, covered by the epidermis. Asci clavate, 

 short. Sporidia elliptical, continuous, hyaline. 7| x 3 p.. 



On gourds, Bethlehem, Pa. 



The specimen in Herb. Schw. is without fruit, immature or sterile. 



L. Polvgonati, (Schw.) 



Spharia Polygonal/, Schw. Syu. N. Am. 1793. 



Sphcrrella Polygonati, Cke. 1. c. 



Lcrstadia Polygonati, Sacc. Syll. 6010, Cke. Syn. 5251. 



Perithecia scattered, innate, prominent on both sides of the leaf. 

 hemispherical, astomous, black, nucleus white, without any fibrous 

 subiculum. 



On Polygonatum, Bethlehem, Pa 



SPH J1RELLA, Ces. & De Not. 



Schema di Cassif. Sferiacei, p. 62. 



Perithecia thin-membranaeeous, globose-lenticular, covered by 

 the epidermis, or suberumpent. Ostiolum impressed or short-pa pilli- 

 form, perforated. Asci without paraphyses, 8-spored. Sporidia ellip- 

 tical or oblong, 2-eelled, hyaline or subhyaline. Spermogonia and 

 conidia of many species known. An extensive genus. Perithecia 

 small, punctiform, generally foliicolous, rarely on twigs and fruit. 



A. Parasitic on leave* <>f dicotyledonous trees and shrubs. 

 S. aquatica. Cke. Journ. Bot. 1883, p. 106. 



Exsicc. Kav. F. Am. 690. 



Perithecia hypophyllous, globose, dark brown, densely crowded 

 on orbicular spots, at first covered by the cuticle, then emergent. 

 Asci clavate-cylindrical. Sporidia elongated-elliptical, nniseptate, hya- 

 line, 20 x 4 p. 



On leaves of Quervus aquatica, Dariea, Ga. 



I 



