178 MONOGRAPH ОҒ CHAETOMIUM AND ASCOTRICHA 
hair, and several spores, all of which are identical with corre- 
sponding structures in Ch. funicolum Cke. 
This species may be confused on the one hand with Ch. elatum 
from which it differs by the small size of its perithecium and 
spores. On the other hand it will be confused with CA. indicum. 
In Ch. funicolum the perithecium during its early development is 
clothed throughout with long, straight, stiff, black, spine-like 
hairs which are more conspicuous than in Ch. indicum and whose 
tips frequently appear above the mass even at maturity. Later 
the terminal hairs (of one type only) grow up, branching by 
narrow, acute angles, until a compact head is formed. Тһе 
greenish-gray and powdery appearance of the plants is due in 
part to the large number of colorless hair tips and also to the 
bundles of crystals on the ultimate branches. These charac- 
teristics, present also in Ch. indicum, make it more difficult to 
separate the two species. 
14. CHAETOMIUM INDICUM Corda, Icones 4: 38. pl. 7, f. 104. 
1840 
Chaetomium melioloides Cooke & Peck; Peck, Rep. New York 
State Mus. Nat. Hist. 27: 106. 1875. 
Chaetomium setosum Winter, Hedwigia 26: 16. 1887. 
FLATS 7, Fics. 1-8 
perithecium and which do not form a dense mass, stout, dichoto- 
mously branched with branches reflexed and roughened by 
spine-like projections, at base dark olive-brown to black and 
about 7.5 и in thickness, fading only slightly or becoming hyaline 
at the terminal branches; (b) hairs which appear later, forming at 
first a tuft about the ostiole, profusely branched by narrow acute 
angles, branches never refl 
inflated, light olive-brown or yellow, finely roughened, terminal — . 
acicular or prismatic crystals. | 
