264 



spots, very small. Asci rlavate. 30 x 10 it. Sporidia elliptical, G x 3 // 

 On leaves of Acer rubrt/t/t. South Carolina. 



L. Cucnrbitacearum, (Scliw.) 



'i ia Citcuibitacearnm, Schw. Syli. N. Am. 1699. 

 SplifFrella Cucnrbitacearum, Cke. 1. c. 

 Lcestadia Ci(cn>bit<iccarut>i,$a.cc. Syll. 6014, Cke. Syn. 5269. 



Perithecia emersed-innate, hemispherical, smooth, verv minute. 







shining, membranaceous, covered by the epidermis. Asei elavate. 

 short. Sporidia elliptical, continuous, hyaline. 7| x 8/2. 



On gourds, Bethlehem, Pa. 



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



L. Polygonal!, (Schw.) 



Sphceiia Polygonati, Schw. Syn. N. Am. 1793. 

 Spharella Polygonati, Cke. 1. c. 



Lcestadia Pnlygnnati, 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. 



SPHARELLA, ( 1 es. & I)e Not. 



Schema di Cassif. Sferiacei, p. 62. 



Perithecia thin-membranaceous, globose-lenticular, covered by 

 the epidermis, or suberumpent. Ostiolum impressed or short-papilli- 

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

 tical or oblong, 2-celled, hyaline or subhyaline. Spermoffonia and 



f_l . / mj 



conidia of many species known. An extensive genus. Perithecia 

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



A. Parasitic, on leave* of dicotyledonous frees a/tid shru-bx. 

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



Kxsicc. Rav. F. Am. 690. 



Perithecia hypophyllous, globose, dark In-own, densely crowded 

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

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

 line, 20 x 4 //. 



On leaves of Querrus rrq-nutf<'<t. Darien, Oa. 



