CRIBEARIA.] HETERODERMACE^. 147 



Plate LVT., A. — d. sporangia after dispersion of spores, ^ 20; e. part of 

 net and margin, of cup, x 180 ; /. spore and plasmodic granules, x 600 

 (United States). 



This species is nearly allied to C. purpurea. 



Hob. On rotten wood. — New York (L:B.M.117): 8. Carolina 

 (B. M. 675, 941). 



15. C. violaeea Rex, in Proc. Acad. Nat. Sc. Phil. (1891), 

 p. 393. Plasniodium " deep violet-black, in rotten wood " (Rex, 

 I.e.). Total height 0-5 to 1 mm. Sporangia globose or ellipsoid, 

 stipitate, erect or slightly nodding, gregarious, about 0-2 mm. 

 diam., dark violet with a metallic sheen ; cup varying in extent 

 of development, two-thirds the height of the sporangium or more, 

 or reduced to one-third, membranous, violet-blue, the margin 

 scalloped with few short teeth ; net of delicate threads connected 

 with broadly expanded, flat, angular nodes ; " exceptionally the 

 apical portion is nearly entire, being simply perforated with 

 three or four oval or rounded openings" (Rex). The cup and 

 nodes are beset with minute purple plasmodic granules 0-5 to 1 

 /t diam. Stalk slender, subulate 3 to 5 mm. long, violet-black. 

 Spores Ulac, minutely and closely warted, 6 to 8 /* diam. 



Plate LVI., A. — g. sporangium after dispersion of spores, x 20 (England) ; 

 h, part of net a|id margin of cup of same, x 180 ; i sporangia after dis- 

 persion of spores, x 20 (United States) ; h. part of net and cup of same, 

 X 180 ; spore and plasmodic granules, x 600. 



In July, 1893, and in September, 1894, fine gatherings of this beautiful 

 and minute species were obtained by Mr. J. Saunders from the under 

 side of a rotten fir-log near Ivinghoe, Bucks ; the colour of the spor- 

 angia, stalks and spores is violet-blue, and they resemble the American 

 specimens received from Dr. Eex in all respects except that in many 

 cases the cup of the sporangium-wall is one-third to one-half the 

 height of the sporangium instead of two-thirds or more. It differs 

 from C elegans in the longer stalks, the smaller sporangia, in the 

 blue-, not red-purple colour, in the smaller plasmodic granules in the 

 knots and sporangium- wall, and in the larger violet-blue spores with 

 a thicker epispore. 



Hah. On fir- wood.— Ivinghoe, Bucks (L:B.M.118) ; Philadelphia 

 (L:B.M.n8). 



SPECIES NOT MET WITH IN THE QUOTED COLLECTIONS. 



16. C. tatrica Racib., in Hedw. (1885), p. 170. Sporangia 

 globose, red-brown, | to 1 mm. diam., stalked; stalk dull red, 

 straight, 2 mm. long ; cup irregularly crenate-dentate, closely 

 perforated at the margin ; nodes of the net not enlarged ; spores 

 smooth, yellow, 6 to 7 fi diam. 



Hah. On rotten wood. — Tatra, Hungary. 



This description suggests C. atirantiaca j3., in which the nodes of the 

 net are only slightly enlarged. 



C. stellata Sebum., C. didermoides Schum., 0. badia Chev., are 

 excluded by Rostafinski on what appear to be sufficient grounds. 



