140 
ENDOSPOllEiE. 
[CRlBRAEIA. 
cylindrical, 0"1 to 0-8 mm. high, furrowed, dark brown, arising 
from a well-developed hypothallus. Spores ochraceous, nearly 
smooth, 5 to 6 /X diam. — Rest., Mon., p. 238 ; Cooke, Myx. Brit., 
p. 59; Blytt, Bidr. K. Norg., Sop. iii., p. 10; Mass., Mon., p. 65. 
Stemonitis argillacea Pers., in Gmel., Syst. Nat., ii., p. 1469 
(1791). 
Plate LII., A.— a. sporangia, x 20 ; i. net of sporangium-wall and stalk, 
X 50 ; c. spores and plasmodic granules, x 600 (England). 
This species varies much in the extent to which the net of the 
sporangium-wall is developed. In the usual form the bands are dark 
brown, well-defined, hardly expanded at the nodes, often stouter 
towards the base ; but in some gatherings the thickenings are faint 
and broad, and the wall of the sporangium is nearly uniform in texture, 
in which case it closely resembles the form /3. simjjlex of Lindhladia 
TuhuUna. 
Hah. On dead wood. — Richmond, Surrey (L:B.M.104) ; Birmingham 
(L:B.M.104); Leighton, Beds (L:B.M.104) ; Boynton, Yorkshire 
(B. M. 1044) ; Aboyne, Scotland (B. M. 243) ; Leicestershire 
(B. M. 244a) ; Germany (Strassb. Herb.) ; Norway (L:B.M.104) ; 
Philadelphia (L:B.M.104); Mass., U.S.A. (L:B.M.104). 
2. C. rubiginosa Fries, Syst. Myc, iii., p. 172 (1829). Plas- 
modium ? Total height 2 mm. Sporangia ellipsoid, shortly 
stalked, crowded, erect, 1'7 mm. high, 1 mm. broad, crimson; cup 
reaching to half the height of the sporangium, beset with minute 
dark plasmodic granules arranged in isolated clusters towards 
the base of the membranous wall, and in a reticulated pattern 
upwards, the lines becoming thickened and continued into the net 
at the somewhat perforated margin ; net of delicate, dark brown, 
rigid threads with a mesh about 1 mm. diam., without conspicuous 
expansions at the nodes. Stalk rugged, dark brown, 0"3 to 
0-5 mm. long, 0*2 mm. thick. Spores rufous, almost smooth, 
5 to 6 /A diam. 
Plate LII., B, — a. sporangia, natural size ; b. sporangium after dispersion 
of spores, from a mounting in Canada balsam, x 20 ; c. net of sporangium- 
wall with margin of cup, x 180 ; d. spore, x 600 (Sweden). 
This handsome species appears to be represented by the solitary 
Swedish gathering. 
Hah. On fir needles.— Sweden (Edin. Herb. ; L:B.M.105 slide). 
3. C. rufescens Pers., in Romer, N. Mag. Bot., i., p. 91 (1794). 
Plasmodium ? Total height 1-5 to 2 mm. Sporangia subglobose or 
turbinate, scattered, stipitate, erect, 0-6 to 0-7 mm. diam., rufous- 
brown; cup one-third the height of the sporangium, with a regularly 
toothed margin, more or less ribbed, the thicker ribs continued 
into the wide-meshed net ; the plasmodic granules of the spo- 
rangium-wall hardly 1 diam. ; nodes of the net hardly expanded, 
or narrow triangular, flattened, connected by three or four firm 
threads. Stalk cylindrical, the length of the sporangium or more, 
0-2 mm. thick, longitudinally rugose, black. Spores pale 
