60 NORTH AMERICAN FLORA [VoL.uME 3 
thick at the base; asci cylindric, short-stipitate, the spore-bearing part 65-75 X12 «4; spores 
1-seriate, globose, subhyaline at first, becoming opaque, 6-10 « in diameter and only slightly 
compressed, 
On a stick of coniferous wood exposed to the weather. 
TYPE LOCALITY : Newfield, New Jersey. 
DISTRIBUTION : Known only from the type locality. 
2. Chaetomium murorum Corda, Ic. Fung. 1: 24. 1837. 
Perithecia more or less gregarious, dark-brown, membranaceous, subglobose or globose, 
150-250 # in diameter; ostiolum short, papilliform, sometimes collapsing ; apical hairs 
simple, slender, flexuous, often 1 mm. inlength, septate, smooth or slightly granular, sub- 
hyaline to dark-brown or almost black, 5 # thick, circinate at the ends; sides of the peri- 
thecia more sparingly clothed with finer, subulate hairs, the basal ones longer; asci broad- 
clavate, short-stipitate; spores more or less ellipsoid, 12-16 X 7-8 », pale- to dark-brown. 
On dead poplar, on dry grass, and on goat dung. 
TYPE LOCALITY: Prague, Bohemia. 
DISTRIBUTION : New York to Montana; also in Europe. 
ILLUSTRATIONS: Corda, Ic. Fung. 1: £1. 7, f. 293,B;2: pl. 13, f. 103 ; Nova Acta Acad. Leop.- 
Carol. 42: pl. 19, f. 13-20. 
3. Chaetomium caninum Ellis & Ev. Jour. Myc. 4: 79. 1888. 
Perithecia densely gregarious, cinereous, thin, membranaceous, ovoid, 250 220, 
rather coarsely cellular, clothed with light-gray, muricately-roughened, rather distantly 
septate hairs which are much longer and denser above (300-400 ), with tips subcircinately 
involute and bases slightly swollen; hairs around the apex diverging to show the black 
papilliform ostiolum ; asci clavate, with slender base, the spore-bearing part 20-24 x 8-9 n, 
8-spored ; spores short, lemon-shaped, scarcely apiculate, 5-7 X 4-5 », mostly 5-6 X4.5 2, 
smoky-hyaline, subolivaceous in the mass. 
On dog dung. 
TYPE LOCALITY: St. Martinsville, Louisiana, 
DISTRIBUTION: Known only from the type locality. 
4, Chaetomium lanosum Peck, Ann. Rep. N. Y. State 
Mus. 28: 64. 1876. 
Perithecia scattered or gregarious, broad-ovoid to subglobose, 150-250 x 125-200 p, 
dark-brown, membranaceous, covered with long hairs; hairs not differentiated, except that 
the apical ones are longer, extending out 300 #, remotely or not septate, dingy-olivaceous 
to subhyaline, slender, 3 » thick, flexuous, somewhat interwoven and comparatively few in 
number, not forming the dense mass so often found in the genus; spores 5.5-7 K 4-6 u, 
broadly ovoid to subglobose, sometimes slightly apiculate at both ends. 
On dampened herbarium paper and specimens of grass. 
TYPE LOCALITY: Albany, New York. 
DISTRIBUTION : Known only from the type locality. 
5. Chaetomium olivaceum Cooke & Ellis, Grevillea 6: 96. 1878. 
Perithecia scattered or gregarious, broadly ovoid or ellipsoid, often pointed at the base, 
250-300 X 200-250 », in fresh condition olivaceous but in dry specimens dark-brown and 
metubranaceous, thickly and evenly clothed with slender, flexuous hairs; apical hairs 
somewhat coarser than the others, simple, sparingly septate, minutely scabrous, 3-4 « thick, 
often 700 # long, in the fresh condition pale-olivaceous, in dry condition light-brown ; asci 
oblong-clavate, the spore-bearing part 35-40 K 12 #; spores yellow-brown, globose-ellipsoid, 
slightly apiculate at both ends, 9-12 8-9 p. 
On various dead plants, moist wood, rye-straw, paper, pasteboard, etc. 
TYPE LOCALITY: Newfield, New Jersey. 
DISTRIBUTION: Maine to Kansas and Texas. 
ILLUSTRATION: Grevillea 6: pl. 100, f. 38. 
ExsiccaTr: Ellis, N. Am. Fungi 56. 
6. Chaetomium Ellisianum Sacc. & Syd. in Sacc. Syll. 
Fung. 14: 491. 1899. 
Chaetomium pusillum Hillis & Ev. Proc. Acad. Phila, 1890: 220. 1890. Not C. pusillum Fries, 
1829. 
Perithecia gregarious, black, membranaceous, broadly ovoid to subglobose, 200 & 150 B, 
