198 МОХОСЕАРН ОЕ CHAETOMIUM AND ASCOTRICHA 
published by Koorders (49) in 1907, have been available for 
study, the writer has concluded that this plant should be included 
under Ch. globosum Kze. In fact at the end of his diagnosis 
Koorders has stated that undoubtedly his species is related to 
Ch. Kunzeanum, which, as Zopf stated, has a very wide distribu- 
tion on various substrata. 
Bainier in his * Monograph of Chaetomium” (3) has treated the 
varied forms of Ch. globosum Kze. as distinct species, and has listed 
and described them under the following names: Ch. megalocarpum, 
Ch. setosum, Ch. spirilliferum, and Ch. undulatum. It is the opin- 
ion of the present writer that these should not be separated from 
the type form, since they prove to be extremely variable when 
grown in cultures. 
In addition to the above mentioned forms it is possible that 
Ch. Douglasii, described by Schweinitz in 1834, and Ch. Fiebert 
Cda., var. macropoda, described by Spegazzini in 1898, should 
be listed here, but type specimens of these are not available and 
the description in both cases is of such a general nature that it is 
hardly possible to determine the identity of these forms. They 
will be found listed, therefore, among the doubtful species. 
The above is as complete an account of the synonymy con- 
cerned with this species as the writer is able to give, and it may 
be well to state here that he has arrived at the above conclusions 
only after long experience in cultivating the variable forms of the 
species which have been gathered from nearly all parts of the 
world, and only after a thorough study of exsiccati and type 
specimens so far as they have been available. 
From an examination of the above exsiccati it has been found 
that in several the specimens contain plants which belong to 
other species and in some cases at least to other genera. In 
the following only Ch. elatum Kze. could be found: Ch. chartarum 
Ehrb. in Micro.-Fung. Brit. No. 475; Ch. Fieberi Cda. in Fung. 
Gall. No. 6409; Ch. Fieberi Cda., var. chartarum Roum. in Fung. 
Gall. No. 5827; Ch. Kunzeanum Zopf іп Мус. March. No. 3246, 
and Ch. olivaceum C. &. E. in Myc. Univ. No. 1942. Тһе speci- 
men under the name Ch. chartarum Ehrb. in F ung. Austro- 
Americani, Хо. 193 contains plants of Ch. chartarum (Berk) 
Winter, or Ascotricha chartarum according to the nomenclature | 
