756 



stem. Perithecia glabrous or only apparently punctate from the dis- 

 L'liai'ged spores. 



On cabbage stems in cellars. 



1 741 . Sphceria Cannabis, Scliw. — Scattered or seriate, at length 

 bursting through the thin epidermis, very minute, flattened-globose, 

 rugose. Ostiolum indistinct. Perithecia easily deciduous. 



Under the epidermis of stems of Cannabis. 



1742. Sphcsria lactescentium, Schw. — Densely aggregated, 

 rather large, at first covered by the epidermis, lying among the fibers 

 of the stem and easily deciduous, at length free. Perithecia black, 

 rugose, subconfluent, subconical and irregular, finally subcollapsing, 

 but always crowned with a white, spermatic globule. The stems are 

 often covered with the perithecia for a foot in length. 



On- the lower part of the stems of Asclepias Syriacus. 



1743. Sphceria Asclepiadis, Schw. — Scattered, covered, shining- 

 black and visible through the epidermis, oblong-applanate, only a little 

 raised, subconfluent, rough, astomous, nucleus black. Although there 

 are no bi-istles, Schweinitz thinks this may belong to the genus 

 Exosporium. 



On the upper part of stems of Asclepias Syriacus. 

 Different from Diaporthe Asclepiadis. (See p. 459). 



1744. Sphaeria Daturm, Schw. — At first covered, minute, lying 

 scattered and hidden under the epidermis, hardly ever entirely de- 

 nuded. Perithecia flattened, rugulose, subcollapsed, papillate-ostiolate, 

 dark brown. 



On stems, capsules and spines of Datura, Salem, N. C, and 

 Bethlehem, Pa. (Schw.), New York (Peck). 



1745. SphcBria scapincola, Schw. — Yery minute, orbiculate, 

 scarcely covered, appearing as minute, black specks thickly scattered 

 over the thin epidermis, flattened, subcollapsed, rugulose, with a very 

 minute central point or papilla scarcely visible. The minute peri- 

 thecia are scattered over the entire length of the scape. 



On scapes of Yucca filamentosa. 



1746. SpTicBvia ampliata, Schw. — Covered, broadly efi'used on 

 a subcuticular spot. Perithecia compressed, nestling among the fibers 

 of the stem, in which little cavities are left after the perithecia have 

 disappeared. Ostiolum thick, cylindrical, perforated at the enlarged 

 apex. 



On stems of Umbelliferce. 



