214 MONOGRAPH OF CHAETOMIUM AND ASCOTRICHA 
It has been possible to study type specimens in Fung. Rhenani 
No. 1572, of Ch. paucisetum, which was named by Fuckel (41) 
in 1866. The perithecia have been found to be globose, closed, 
black, firmly adnate to the surface of the substratum, and naked 
or bearing only a few short, scattered, slender, spine-like hairs. 
In Die Pilze Deutschlands (110, p. 65) this form is given the name 
Chaetomella atra (Fckl.). 
In 1873 Berkeley and Broome (7) described Ch. glabrum 
and Ch. rufulum. Тһе figures and descriptions of the first 
named species assure one that the plant is not a Chaetomium. 
It has been described by Cooke (19) as Orbicula perichaenoides, 
and by Saccardo as Anixia perichaenoides (79, p. 35). So far as 
Ch. rufulum is concerned there is no indication, either in the 
description or the figures, of the presence of perithecial hairs. 
The asci and the rough, spherical spores are not typical of Chae- 
tomium. 
Through the kindness of Dr. Saccardo it has become possi- 
ble to examine type specimens of Ch. calvescens (76), described by 
that author in 1878. The specimens, however, are in such a con- 
dition that it is impossible to identify the plant in question 
with a great degree of accuracy. Only in one perithecium of the 
many which were mounted have any hairs been found, and in 
that case they are few and rather stiff and spine-like. In one 
perithecium the remains of a neck like that of Melanospora 
appears. The honey-yellow color of the apparently mature 
spores would indicate that the form is not a Chaetomium. In 
1882, it was listed by its author (79, p. 227) under ''Species 
Desciscentes."' + 
Karsten (47) іп 1881 described a plant under the name Ch. 
Лтзефит which produced many spores in the ascus. No species 
typical of Chaetomium have been found to contain more or less 
than eight spores in their asci, and it seems reasonable to conclude 
that forms with a varying number of spores should be listed in 
another genus. 
In 1882 Rehm (73) added the new name Ch. Polypori to the 
genus, and while authentic specimens are not at hand the original 
description indicates that these plants are not Chaetomia since 
the perithecia are minute, and clothed with very short, acute 
