Berry: Remarkable Fossil Fungi 
77 
The second form appears to be referable to the genus Clados- 
porites proposed by Felix® in 1894 for an Eocene form from 
Perekeschkul, Austria. It may be called Cladosporites oligocae- 
nicum sp. nov. in allusion to its occurrence in wood of lower Oli- 
gocene age. It is found in the same rotten stem of Palmoxylon 
cellulosum Knowlton as Peronosporoidcs palmi. It shows a much- 
branched intra-cellular mycelium with united side branches and 
made up of fine, much-septate hyphae .0028 mm. in diameter. 
These hyphae proliferate freely within the cells of the parenchyma 
and occasionally are observed to send off haustoria to the walls. 
They frequently show terminal conidia which are in linear pairs, 
triplets or quadruplets, being generally in pairs or triplets. The 
conidia are sub-spherical in form and range in diameter from .0035 
mm. to .0054 mm. For example, in PI. 181, f. 4, the proximal 
segment is .00357 X -004 mm. ; the middle segment is .0045 
mm. X -0054 mm. ; and the distal segment is .0036 mm. X -004 
mm. Associated with these well marked conidia and borne on 
hyphae of similar size are the objects shown on Plate 18 1, fig. 2, 
5, and 8, which it would seem can best be interpreted as zygospo- 
rangia. They are without preserved contents and are not certainly 
identified with Cladosporites oligocaenicmn. Cladosporites was 
named by Felix from its resemblance to the members of the exist- 
ing genus Cladosporium Link, but since the habit of forming 
chains of conidia is a widespread one in the Fungi and the fossil 
forms are all endoparasites in the vascular axis of trees, the pres- 
ent species being an intra-cellular parasite, I am not prepared to 
say that they should be referred to the Didymosporae of the 
Hyphomycetes (Lindau) or just what their nearest existing rela- 
tives should be considered to be. An additional species of Clado- 
sporites was recently described by Whitford^® from the Pliocene 
Snake Creek beds of Nebraska. 
The third new species to which I wish to call attention may be 
named Cladosporites fasciculatus sp. nov. It is found in exceed- 
ing abundance in silicified specimens of lauraceous wood from the 
middle Eocene (Yegua formation of the Claiborne group) of 
10 Whitford, A. C., University Studies, Univ. of Nebraska, vol. 14, 1914, 
3 pp., 2 pis. 
