MONOGRAPH OF CHAETOMIUM AND ASCOTRICHA 213 
plants which he called Ch. ciliatum are not Chaetomia, since the 
spores are cylindrical and provided at both ends with delicate 
cilia. Saccardo in the Sylloge Fungorum (3: 684) has given this 
plant a place under the name Dinemasporium ciliatum (Bon.). 
Sections of the authentic material of Ch. Braunii Rabh., in 
Klotzsch. Herb. Myc. No. 1554, show the fruiting bodies to be 
stromatic, cellular, passing far down below the surface of the host 
tissue, black and coriaceous, covered with short, black, spine-like 
hairs. 
The three species, Ch. concinnatum, Ch. tomentosum, and Ch. 
signatum, are described only in a most general way without meas- 
urements or illustrations. Rabenhorst, in Linnaea (24: 144), has 
questioned whether Ch. tomentosum is sufficiently different from 
Ch. pannosum Wallr., and has stated that in his specimen the hairs 
are soft, not rigid. A study of Rabenhorst’s Ch. tomentosum 
in Klotzsch. Herb. Myc. No. 1856 shows his plants to be Ch. 
murorum Cda. No author, with the exception of Rabenhorst, 
has ever recorded the re-appearance of these forms and it would 
seem that the use of these names could well be discontinued. 
In 1853 Strauss (99) published a diagnosis of what he con- 
sidered а new species of Chaetomium under the name Ch. nivale, 
and Montagne (бі) in 1856 added the name Ch. raripilum. The 
original description of Ch. nivale, together with the figures 
which Strauss published in connection with it, furnish sufficient 
evidence that he was dealing with a genus other than Chaetomium. 
This plant has been listed by Saccardo (80, р. 855) under the 
name Acanthostigma nivale (Str.). It is also evident from. a 
study of Montagne's description that his plant is not a species 
of our genus. It is given a place by Saccardo in the third volume 
of the Sylloge (p. 322), under the name Chaetomella raripila 
(Mont 3. 
The description and simple figure of Ch. fimeti, published by 
Fuckel (40, p. 491) in 1861, are those of the plant which Zopf 
(113, p. 280) described and figured under the name Chaetomidium 
fimeti, and which was still later described and figured by Вапиег 
(3, p. 192) under the same name. Exsiccati specimens of this 
form are to be found in Rehm Ascom. Хо. 991, and Fung. Sax. 
No. 370. 
