68 
of the ruptured sporanges and the columella. The outer per- 
-idium breaks up in patches and the sporanges were hard to detect, 
resembling the scaly growth of a young Parmela. This isa rare 
species in this country but promises to be abundant in Maine. 
102. D.spumariodes Fr. E, Auburn, Nov., 1896. (Merrill.) A 
single plasmodium found on decaying leaves. A species with 
small subglobose sessile contiguous sporanges, whitened by a coat- 
ing of lime, Rare in Maine. , 
103. Spumaria alba Bull. Head of Pamedomcook Lake, Octo- 
ber, 1895. (Harvey.) Growing onmoss. Two specimens taken, 
Orono, October, 1896, and E. Auburn, Nov., 1896. (Merrill.) On 
sticks and grass. Specimens taken by Mr. Merrill at Orono were 
infested by the rare fungus Hypomyces candicans Plow., which has 
never before been recorded from this country, and by nobody 
abroad except Plowright. He found it on a Myxogaster, but did 
not know the species. Our specimens have well developed asci. 
The form described by Mr. Ellis as Nectria Rexiana (Eli), and 
found by Dr. Rex on Chondrioderma spumarioides, is the young of 
the same thing. Wesent Mr. Ellis a specimen and he said it was 
the same as his Vectria Rexiana Ell. 
104. Didymium lobatum Nees, Greenfield, Oct., 1896. (Harvey). 
This form is included by Rostafinski under D. farinaceum Schrad. 
It may be distinct. 
Orp. STEMONITACEAE. 
Remarks: Comatriche crypta Schw. Greenfield, Aug., 1896. (Har- 
vey.) Nov., 1896. E.Auburn. (Merrill.) Mr. Morgan said of our 
Greenville specimens that they were well grown and typical. The 
form which Dr. Rex described as C. wregularis, and which Lister 
makes a variety of Peck’s C. /onga is only a ragged, poorly developed 
state of C. crypta. We find this and the type in the same plas- 
modium. Abundant in Maine, forming plasmodia several inches 
across. This is no. 38 of a former list. 
Comatriche nigra Pers, Greenfield, Aug., 1896. (Harvey). A 
few scattered sporanges on decaying wood. Reported in a 
previous list (no. £7) as C. obtusata Preuss. Lister includes 
the above, together with another form which we find at Orono _ 
_ that was described as C. Suksdorfii by Ellis in his C. obtusata 
_ Preuss, The latter may prove a distinct species. 
