CRIBRARIA.] 
HETEllODERMACEil3. 
147 
Plate LVT A —d. sporangia after dispersion of spores, x 20 ; <?. part of 
net and margin of cnp, x 180 ; /. spore and plasmodic granules, x GUO 
(United States). 
This species is nearly allied to C. ])urpurea. 
Hah. On rotten wood. — New York (L:B.M.117); S. Carolina 
(B. M. 675, 941). 
15. C. violacea Rex, in Proc. Acad. Nat. Sc. Phil. (1891), 
p. 393. Plasmodium " deep violet-black, in rotten wood" (Rex, 
^.c). Total height 0*5 to 1 mm. Sporangia globose or ellipsoid, 
stipitate, erect or shghtly nodding, gregarious, about 0*2 mm. 
diam., dark violet with a metalhc sheen ; cup varying in extent 
of development, two-thuxls the height of the sporangium or more, 
or reduced to one-third, membranous, violet-blue, the margin 
scalloped with few short teeth ; net of dehcate 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 
diam. Stalk slender, subulate 3 to 5 mm. long, violet-black. 
Spores lilac, minutely and closely warted, 6 to 8 ya diam. 
Plate LVI., A. — g. sporangium after dispersion of spores, x 20_(England) ; 
li.. part of net and margin of cup of same, x 180 ; i. sporangia after dis- 
persion of spores, x 20 (United States) ; U. 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. Rex 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. 
Hab. On fir- wood.— Ivinghoe, Bucks (L:B.M.118) ; Philadelphia 
(L:B.M.118). 
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 /a diam. 
JIab. On rotten wood. — Tatra, Hungary. 
This description suggests C aurantiaca (3., in which the nodes of the 
net are only slightly enlarged. 
C. stellata Schum., C. didermoides Schum., C. hadia Chev., are 
excluded by Rostafinski on what appear to be sufficient grounds. 
