NOTICES OF BRAZILIAN FUNGI. 639 
naceo rigidiusculo crenato glabro nitidulo zonato brunneolo ; 
stipite centrali tenui; hymenio albo. 
On a rotten stick covered with sand, on the bank of Rio de 
Mauvel Alvez. Prov. of Goyaz. Oct. 1839. 
Pileus about half an inch broad, infundibuliform, thin, 
submembranaceous, but rather rigid, brownish, with a tinge 
of red, marked with darker zones, smooth, shining. 
Stem 4-13 inch long, about 1 line thick. Hymenium, co- 
vering part only of the under surface, white. 
30. Dictyonema sericeum, Mont. (sub Dichonemate, in Bel. 
Voy. p.155.) Thelephora sericea, Swartz / 
Organ mountains. 
The specimens are in a high state of fructification, being 
covered, on the under side, with an ochraceous, much 
cracked hymenium, exactly like that of a Stereum. Precisely 
the same hymenium exists in Dictyonema excentricum, of 
which I have seen an authentic specimen, and which does not 
differ generically from Dichonema. The genus will come next 
to Cora, whose hymenium is similarly formed. Dichonema 
«ruginosum, Nees v. Es. is apparently the same species. The 
margin is pale, in consequence of the Calothrix or Scytonema 
which accompanies it, not having grown so fast as the matrix. 
31. Nidularia plicata, Fr. in Linned, vol. 5, p. 553. 
On adry bank. Organ mountains. 
32. Spheria Hypoxylon, Ehr. 
Var. mucronata. 
On the stem of an old tree. Arrayas, Prov. of Goyaz 
April 1841. 
This variety has the form of SpA. escharoides, Berk., and 
appears to be, as nearly as possible, the same with what 
Schweinitz has figured under the name of S. mucronata in 
Journ. Ac. Nat. Sc. : Phil. vol. v. 1825. p. 5. tab. 1. fig. 1. 
The stem is slender, 1 to 4 of an inch long. Head i-i 
an inch long, 1 line thick, cylindrical, in general tipped pee a 
short acute mucro. 
33. Geaster fimbriatus, Fr. Syst. Myc. vol. 3, p. 16. 
Rio Janeiro. A single specimen only. 
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