146 Natural History Bulletin. 



Reported first as found on pine needles in South Carolina. 

 Rostafinski adds: Peridia spherical umbilicate below, stipitate; 

 stipes straight, rigid, ferruginous, produced in the interior of 

 the peridium as a columella. Columella of varying shape. 

 Capillitium of colorless threads, united in a loosely constructed 

 net. 



A beautiful little species occurring occasionally on dead 

 leaves, etc., in September and later. Perhaps too near the 

 next, from which it is distinguished by longer slender stem, 

 spherical sporangium, and pale or colorless capillitium. 



44. DiDYMiuM FARiNACEUM, Schvader. Plate VII, Figs. 3 



and 3(?. 



Sporangia distinct, gregarious, stipitate, hemispherical, ap- 

 planate, umbilicate below. Stalk short, sometimes scarce 

 visible. Columella hemispherical, filled with calcareous gran- 

 ules. Peridium thin, strev/n with minute lime crystals. Capil- 

 litium of simple, fuscous, wavy threads. Spores spheroidal, 

 spinulose fuscous, .010-. 01 2. 



Rare, in spreading colonies on bark of rotten stems. The 

 Plasmodium is said to be white. Several varieties are recog- 

 nized according to the length of the stem, abundance of lime- 

 crystals, shape of sporangium, etc. August — September. 



45. DiDYiMiuM MiCROCARPON, [Frlcs^ Rostafiuski. Plate 



VII, Figs. 2, 2a and 2b. 



Sporangia stipitate, spheroidal, covered with crystals, snow- 

 white, umbihcate. Stem long, twice the diameter of the 

 sporangium, striate black or rusty - yellow. Capillitium of 

 simple violet-tinted threads in a loose net. Spores violet- 

 tinted, nearly smooth, .005-. 006. 



Our specimens are very delicate and beautiful, snow white 

 spherules, mounted on slender stalks scarcely impressing the 

 base of the sporangium, hence hardly umbilicate. The 



