CRIBRARIA.] 
HETERODERM ACEiiE . 
Ui 
yellowish-red, minutely warted, 5 to 7 /x diam.— Peivs., Syn 
Fung., p. 193. Stemonitis rufa Roth, Fl. Germ., i., p. 548 (1788) 
Cribraria rufa Eost., Mon., p. 232 (1875) ; Cooke, Myx. Brit, 
p. 58 ; Blytt, Bidr. K. Norg., Sop. iii., p. 9 ; Mass., Mon., p. 63 
Cribraria intermedia Schrad., Nov. Gen. PL, p. 4 (1797). C. fulva 
Schrad., I.e., p. 5. 
Plate LIII., A.— a. sporangia, x 20 ; J. net and cup of sporangium-wall, 
X 50 ; c. spore and plasmodic granules, x 600 (Scotland). 
Hub. On dead wood.— Moffat, Scotland (L:B.M.106) ; Baden Baden, 
Germany (L:B.M.106). 
4. C. minutissima Schwein., in Trans. Am. Phil. Soc, New 
Series, iv., p. 260 (1834). Plasmodium? Total height 0-5 to 
0-7 mm. Sporangia globose, gregarious, stipitate, erect or inclined, 
0-1 to 0-2 mm. diam., nut-brown ; cup half the height of the 
sporangium, or more, or less, or wanting, pale nut-brown, nearly 
even at the margin, faintly striate longitudinally with lines of 
plasmodic granules 1 /x diam ; nodes of the net hardly expanded, 
or narrow and flattened, connected by three to five delicate 
threads. Stalk filiform, one and a half to four times the height 
of the sporangium, brown. Spores ochraceous, almost smooth, 
5 to 6 '5 ft. — Eost., Mon., App., p. 31. Cribraria miniina Berk. 
6 Curt., in Grev., ii., p. 67 ; Mass., Mon., p. 59. C. microscopica 
Berk. & Curt,, in Grev., ii., p. 67; Eost., Mon., App., p. 31; 
Mass., Mon, p. 62. 
Plate LIII., A. — d. to {/. sporangia after dispersion of spores; 7i. spore 
and plasmodic granules, x 600 (United States). 
In the large gatherings obtained by Dr. Rex of this species, great 
variety is found in the size of the cup and in the extent to which 
nodes of the net are enlarged. Nothing now remains in this country 
of the type specimen of C. microscopica Berk. & Curt. ; but from. 
Berkeley's description and figure it differs from C. minutissima only 
in having the nodes of the net rather more expanded, a character 
so variable that the organism is here included under C. minutissima. 
Hab. On dead wood.— Philadelphia (L:B.M.107) ; S. Carolina 
(B. M. 671). 
5. C. macrocarpa Schrad., Nov. Gen. PL, p. 8 (1797). 
Plasmodium ? Total height 2 mm. Sporangia globose or 
turbinate, gregarious or scattered, stipitate, erect, 0"6 to 0-8 mm. 
diam., rufous-brown ; cup about one-third of the sporangium, 
orange-brown, with numerous dark longitudinal ribs, perforated 
above, margin irregularly and deeply ^toothed, merging into the 
branching nodes of the net ; nodes flattened, elongated, confluent 
and irregular in the lower pai-t, branching and polygonal, with 
the angles continued into the connecting threads above ; the 
nodes and ribs of the cup beset with dark plasmodic granules 
1 to 2 /X diam. Stalk cylindi-ical, 0'8 to 1 mm. high, 0-1 mm. 
thick, fui'rowed, dark brown. Spores ochraceous, nearly smooth, 
4 to 6 II diam.— Eost., Mon., p. 238 ; Cooke, Myx. Brit., p. 59 ; 
Blytt, Bidr. K. Norg., Sop. iii., p. 10 ; Mass., Mon., p. 56. 
