MONOGRAPH OF CHAETOMIUM AND ASCOTRICHA 189 
be distinguished which were very dark to black below, yellow and 
finally hyaline and refractive above, clearly septate, and irre- 
gularly branched. These hairs were studied with extreme care 
with the hope that anastomosing branchlets might be found, but 
none could be seen. 
The species was first described by Fuckel, in the Symbolae 
Mycologicae, in 1869, and again by Zopf in his monograph in 
Nova Acta in 1881, and was finally redescribed and figured by 
Bainier in his monograph in 1910. Since the writer has never 
found this form and the available type specimens have not been 
entirely satisfactory, he has been obliged to rely on those men- 
tioned above for his information. Zopf in comparing and con- 
trasting this species with “Ch. Kunzeanum” has stated that the 
two resemble each other in respect to the dense mass of terminal 
hairs, but differ in respect to the shape and size of the spores. 
Bainier has stated that the perithecia are pure white during their 
earlier stages, and that the terminal hairs may be divided into 
two groups, those which are 5.6 и in diameter, long and rigid, 
and those only ішіп diameter and only half as long as the first 
type. He described the spores as dark bluish-gray or greenish. 
I9. CHAETOMIUM SPHAERALE Chivers, Proc. Am. Acad. 48: 84. 
1912 
PLATE II, FIGS. 18-23 
Grayish-yellow, olive-yellow, with age golden-yellow. Peri- 
thecia rather large, globose or subglobose, evenly rounded at 
base, distinctly narrowed above, 312 X 276 и (300-329 X 262- 
300), frequently provided with short, black cirrhi, without rhi- 
base about 3.7 іп thickness, others wavy, rather short, un- 
branched, at base about 2.8 и in thickness. Terminal hairs long, 
th, irregularly 
when young filled with refractive greenish hyaline glo | 
mature dark olive-brown, lemon-shaped to globose, apiculate or 
umbonate at both ends, 7.3-8.1 X 6.4 и. 
