140 ENDOSPOREyE. [CRIBRARIA. 



This species has hitherto been found only in America ; the spores in 

 mass are described by Dr. Rex as a dull red, the colour of the paler 

 forms of C. pur pur ca" 



I fab. On dead wood. New York (L:B.M.114) ; Ohio (L:B.M.114) ; 

 S. Carolina (K. 1689). 



12. C. microcarpa Pers., Syn., p. 190 (1801). Plasmodium ? 

 Total height 0'7 to 2 mm. Sporangia globose, gregarious, 

 stipitate, erect or nodding, 0'2 to 0'25 mm. diam., purple-brown; 

 cup rudimentary or wanting; net close, regular; nodes of the 

 net subglobose, prominent, about 10 /x diam., densely charged 

 with purple-brown plasmodic granules 1 to 2 /x diam., connected 

 by five or six delicate pink threads. Stalk slender, four to ten 

 times the height of the sporangium, purple-brown. Spores pale 

 red, minutely spinulose, 5 to 6 /x, diam. Host., Moil., p. 235 ; 

 Mass., Mon., p. 63. Cribraria capillaris Fr., Stirp. Femsj., p. 84. 

 Dictydium microcarpum Schrad., Nov. Gen. PL p. 13 (1797). 



Plate LV., B. d, e. sporangia after dispersion of spores, x 20 (d. Germany, 

 Kostafmski's type, e. United States) ;/. part of net with cup of sporangium, 

 x 180 (Germany); g. the same, x 180 (United States); li. spore and 

 plasmodic granules, x 600. 



Hob. On rotten wood. Germany (B. M. 676) ; Freiburg, Germany 

 (Strassb. Herb.) ; Philadelphia (L:B.M.115). 



13. C. purpurea Schrad., Nov. Gen. PI., p. 8 (1797). 

 Plasmodium ? Total height 2*5 mm. Sporangia globose, stipitate, 

 erect or inclined, gregarious, 1 mm. diam., purple; cup one-third 

 of the sporangium, margin deeply toothed ; net of slender threads 

 with mesh of varying size, about 1 mm. diam., only a few of the 

 nodes expanded, flat, and angular ; the cup and net thickly 

 studded with round purple plasmodic granules, 2 to 2'5 /x. diam. 

 Stalk cylindrical, furrowed, T5 mm. long, O'l mm. thick, purple- 

 black. Spores purplish, minutely warted, 5 to 6 /x. diam. Host., 

 Mon., p. 233; Blytt,Bidr. K. Norg., Sop. iii.,p. 10; Mass., Mon., 

 p. 57. 



Plate LVL, A. a. sporangium after dispersion of spores, x 20 ; I. part 

 of net of same, x 180 ; c. spore and plasmodic granules, x 600 (Salzburg, 

 Tyrol). 



Hob. On rotten wood. Salzburg, Tyrol (L:B.M.116); Norway 

 (L:B.M.116 slide)-, Philadelphia (L:B.M.116). 



14. C. elegans, Berk. & Curt., in Grev., ii., p. 67 (1873). 

 Plasmodium? Total height 0'7 to 1-3 mm. Sporangium globose, 

 stipitate, erect or inclined, gregarious, 0'3 to 0'4 mm. diam., 

 red-purple ; cup about half the height of the sporangium, with 

 the margin deeply toothed and perforated; net of very slender 

 threads, with numerous branching flat expansions at the nodes, 

 the cup and nodes thickly studded with round purple plasmodic 

 granules, 2 to 2-5 /x, diam. Stalk subulate, nearly smooth, 0*6 to 

 1 mm. long, purple-black. Spores pale violet, almost smooth, 

 4 to 6 /x diam. Rost., Mon., App., p. 31 ; Mass., Mon., p. 55. 



