755 



1732. Sphceria malvicola, Schw. — Minute, suTjscriate, eruni- 

 pent from the bark and finally free, variable in shape; when perfect, 

 conical or globose, obtuse and deformed. Ostiolum confluent with the 

 perithecium which is clothed with grayish-black, divergent hairs. 



On stems of Malva Alcea. 



1734. Sphceria tenuissima, Schw. — Covered, scattered, shining- 

 black. Perithecia astomous, dark greenish, very delicate; when fresh, 

 hemispherical, SQon collapsing, visible through the epidermis, finally 

 denuded. 



On stems of Polygonatum latifolium. 



1735. SphcRria navicular is, Schw. — Perithecia sometimes scat- 

 tered, but mostly on a black, elliptical or boat-shaped spot abruptly 

 contracted at each end, not glabrous, indistinctly papillate, finally 

 irregularly collapsing, at length partly loosened or only slightly 



. attached; substance carbonaceo-pulveraceous. 

 On herbaceous stems, Salem, N. C. (Schw.). 



1737. Sphceria ohtusata, Schw. — At first covered, but finally 

 free, staining the substance of the stem yellow. Perithecia variable in 

 shape but always obtuse at the apex, cylindrical, globose or round, 

 moderately raised, glabrous, finally subcoUapsing. Ostiolum hysterii- 

 form, transverse. 



On various herbaceous stems. 



1738. Sphceria platypus, Schw. — Scattered, very black, minute, 

 covered when young, but generally found denuded. The perithecia 

 are seated on a round, flattened base with the margin subinflexed, and 

 often sublobate when dry, and easily separated from the stem. .Peri- 

 thecia conic-globose, apparently punctate from the discharged spores 

 scattered over them; otherwise glabrous and almost shining. 



On stems of Anemone Virginiana. 



1739. Sphceria Polygoni sagittati, Schw. — Scattered thickly 

 over the stems, black, at length entirely free, at first covered, flattened- 

 globose, much wrinkled. Ostiolum cylindric-papillate, brown. Base 

 of the perithecia sometimes effused. 



On dead stems of Polygonum sagittatum. 



1740. Sphceria Brassicce, Schw. — Scattered, erumpent between 

 the fibers of the stem, rather large, globose or hemispherical, black or • 

 brownish-black, astomous, at length ruptured, leaving the lower part 

 of the perithecium irregularly torn and empty still attached to the 



