256 



LESTADIA, Awd. 



Hedwigia 1869, p. 177. 



Perithecia innate, membranaceous, typically pierced at the apex 

 with a simple pore. Asci 8-spored, without paraphyses, mostly clavate. 

 Sporidia ovoid or suboblong, continuous, hyaline. 



Minute fungi growing mostly on leaves. 



A. On leaves of dicotyledonous trees and shrubs. 

 L. rhytismoides, (Berk.) 



Sphczria rhytismoides, Berk. Brit. Fungi, 178. 

 Sphczria Dryadis, Fckl. Symb. p. 108, tab. II, fig. 41. 

 Sphcerella rhytismoides, De Not. Reel. Pir. p. 12. 

 Lcestadia rhytismoides, Saec. Syll. 161 1, Cke. Syn. 5211. 



Perithecia epiphyllous, rather large, semiimersed on large, dark 

 colored, indeterminate spots, globose, very black, perforated, at length 

 depressed. Asci fasciculate, stipitate, clavate, 8-spored, 50-55 x 14- 

 16 a. Sporidia inordinate, or distichous, oblong-ovate, subinequilater- 

 al, ends obtuse, guttulate, 1416 x 5-Q ju, hyaline. 



On leaves of Dry 'as integrifolia, Greenland. 



L. carpinea, (Fr.) 



Sphceria carpinea, Fr. S. M. II. p. 523. 

 Ascospora carpinea, Fr. Summa. Veg, Sc. p. 425. 

 SphcErella carpinea, Awd. Myc. Fur. 1. c. p. 2. 

 Lcestadia carpinea, Saec. Syll. 1619, Cke. Syn. 5223. 

 Exsicc. Fckl. F. Rh. 466. Rab. F. F. 365. Cke. F. Brit. Ser. 1. 165. Desm. Pi. Crypt, 

 Fd. 1. 981. Ed. 2. 285. 



Perithecia amphigenous, sunk in the substance of the leaf and 

 covered by the blackened epidermis, scattered, globose, with a simple 

 pore at the apex, black, 120-150 /u broad. Asci oblong-clavate, 

 narrowed into a short stipe below, 8-spored, 50-60 x 8 ju. Sporidia 

 biseriate, oblong-elliptical, inequilateral, subobtuse, one-celled, hyaline, 

 14-15x4-5 jut. 



On leaves of Carpinus, Bethlehem, Pa. (Schweinitz). 



L. albocrustata, (Schw.) 



Sphczria albocrustata, Schw. Syn. N. Am. 1791. 

 Lcestadia albocrustata, Saec. Syll. 6000, Cke. Syn. 5192. 



Seated on a light cinereous, pulverulent, indeterminate, vaguely 

 effused crust. Perithecia scattered, black, variously crowded on the 

 crust, which in this way has a sculptured appearance, not however, 

 confluent, at first convex, sub-rugose, at length collapsing. Asci cla- 





