750 



Obtectce. 

 * Lignatiles. 



1632. Sphceria laevigata, Schw. Forms a continuous, smooth, 

 black crust widely effused (6 inches), determinate, surrounding the 

 limb. Perithecia scattered, large, globose-depressed, deeply immersed, 

 their ostiola appearing as mere points on the surface of the crust. 



On soft, rotten wood, Bethlehem, Pa. (Schw.). 



1633. Sphceria inundatorum, Schw. Gregarious, covered by 

 a widely effused, rimose crust, so that the wood appears charred. 

 Perithecia scattered, buried in the wood beneath the crust, globose- 

 depressed, without any distinct neck, but with flattened-globose ostiola 

 erumpent through a crustaceous tubercle, and finally pezizoid-umbili- 

 cate. 



On wood lying in the Delaware, at Kaighn's Point, N. J. (Schw.). 



1634. Sphceria excussa, Schw. Perithecia large, thickly scat- 

 tered under the partially loosened epidermis, immersed in the inner 

 bark. Ostiolum punctiform, barely piercing the epidermis, but finally 

 elongated into a distinct beak perforated at the apex. The large, 

 flask-shaped rugose perithecia surrounded with a distinct furrow, also 

 emerge, and when mature, easily fall out, leaving pits in the bark two 

 lines across. 



Frequent on young branches of Pyrus Malus, Bethlehem, Pa. 

 (Schw.). Allied to Massariafcedans, (Fr.). 



1625. Sphceria denudans, Schw. Scattered and aggregated, 

 oblong-globose, depressed. Perithecia immersed, at length subpromi- 

 nent, inner cavity elliptical, enclosed in a kind of cinerascent mem- 

 brane finally black. Ostiola very small, papilliform, situated in a 

 slight depression in the top of the peri thecium, sometimes hysteriiform. 



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



1636. Sphceria Rosce, Schw. Scattered on a dark brown crust 

 widely effused under the epidermis, finally denuded. Perithecia sub- 

 immersed in the crust, hemispheric-prominent, oblong-globose, rugose, 

 black. Ostiola at first scarcely piercing the epidermis, at length 

 short-conical. 



On tender branches of rose bushes, New Jersey (Schw.). 



1637. Sphceria ampelos, Schw. Minute, distantly seriately 

 scattered, circumscissile, brownish, flattened-globose. Ostiola promi- 

 nent through cracks in the bark. 



On much decayed shoots of grape vines, Bethlehem, Pa. (Schw.). 



