Part 1, 1910] CHAETOMIACEAE 638 
easily crushed, thickly clothed with hairs ; lateral hairs few, mostly simple, short, smooth 
or slightly incrusted, hyaline to light-brown; basal rhizoids numerous, flexuous, slender, 
3 wide, remotely septate, pale reddish-brown to dark-brown ; apical hairs consisting of 
rough, deeply incrusted bristles, 9 thick at the base, gradually tapering toward the end, 
often forming a black, spherical mass 900 in diameter, more or less irregularly or dicho- 
tomously branched at the end usually 2-4 times, terminal branches being often 3504 long ; 
branches black or dark-brown and incrusted at the base, gradually becoming paler and 
smoother, until at the tip they are hyaline and entirely smooth or only slightly incrusted, 
non-septate, in dried specimens the delicate terminal branches usually crushed or broken 
off abruptly; spores ellipsoid, apiculate at both ends, 10~14<8-104, usually 1294p, 
hyaline to olivaceous-brown. 
eee ere 
TYPE LOCALITY: Germany. | 
DISTRIBUTION: United States and Canada; also in Europ 
e. 
ILLUSTRATIONS: Nova Acta Acad. Leop.-Carol. 42: p1. 17, f. 14-26; pl. 18, f. 1-11; Grev. tt. 
Crypt. FI. p/. 230, 3 eses i ca ec 
ExsiccaTi: Ellis, N. Am. Fungi 560; Ellis & Ev. N. Am, Fungi 2547 (in part); Ellis & Ev. 
Fungi Columb. 627; C. Baker, Pacif. Slope Fungi 78. 
15. Chaetomium sphaerospermum Cooke & Ellis, 
Grevillea 8: 16. 1879. 
Se Oia Chariarum Berk. Ann. Nat. Hist.1: 257. 1838. Not Chaetomium Chariarum Ehrenb. 
Perithecia scattered or gregarious, broadly ovoid to subglobose, 140-220 128-200 z, 
black, thin, membranaceous; basal and lateral hairs few, short, dark-brown, slender ; apical 
hairs arising from the extreme apex, 500” long, 4-6 thick at the base, gradually becoming 
paler toward the end, branched divaricately 2-3 times, the main axis of the hair being 
prolonged at the point of bifurcation 15-20 u, the prolongation being hyaline and inflated ; 
spores more or less subglobose, not apiculate at the ends, from the front 7-9 XK 34, dark- 
brown ; conidia subhyaline to pale-brown, subglobose, 3-3.5 x. 
On barrel bottom and old paper. 
TYPE LOCALITY: Newfield, New Jersey. 
DISTRIBUTION: New York and New Jersey. 
ILLUSTRATION: Ann. Nat. Hist. 1: £1. 7, /. 8. 
16. Chaetomium setosum Wint. Hedwigia 26: 16. 1887. 
Chaetomium indicum Zoptf, Nova Acta Acad. Leop.-Carol. 42: 279. 1881. Not C. indicum Corda, 
1840. 
Perithecia scattered or gregarious, broadly ellipsoid, 180-200 X 145-1604, clothed on 
all sides with hairs; basal rhizoids long, 3 4 wide, slender, flexuous, dark-brown, remotely 
septate; lateral hairs like basal but less numerous; apical hairs of two kinds, branched 
and simple; simple hairs lanceolate, black and rough at the base, gradually becoming paler 
and smoother, 6 thick at the base, tapering toward the end, extending 400-500” above 
the perithecium ; branched hairs dark-brown, deeply incrusted, like the lanceolate hairs at 
the base, simple for 175-185, then branching dichotomously several times, more or less 
regularly, becoming gradually more slender, paler and less rough, in maturity forming a 
tangled, spherical mass, often 600” in diameter; in the young condition the branched 
hairs are overtopped by the lanceolate bristles, but at maturity the latter are often almost 
entirely concealed by the former; spores small, ellipsoid, 5-6 X 3-4.5 4, pale olivaceous- 
brown. 
On dead Zea Mays L., decaying cypress pickets, cotton plug, and branches of Berberis. 
TyPE LOCALITY: Patagonia. 
DISTRIBUTION : Louisiana to New York ; also in South America and Europe. 
17. Chaetomium funicola Cooke, Grevillea 1: 176. 1873. 
Chaetomium setosum Ellis & Ev. Am. Nat. 31: 340. 1897. Not C. selosum Wint. 1887. 
Chaectomium Bartholomaei Sacc. & Syd. in Sacc. Syil. Fung. 14: 490, 1899. 
Perithecia more or less scattered, small, broadly ovoid, about 150-110, dark-brown, 
