Massee I_believe was the first to suspect their true nature, (Jour. My- 
cology, 5-185.) The matter was thoroughly brought out in our 
Geaster pamphlet, p. 35. 
THE GENUS CYCEODERMA. 
I have seen all but one of the types of the genus Cycloderma 
and they are all unexpanded specimens and most of them Geasters. 
I am in doubt as to the original species Cycloderma indicum 
(Einnaea 32-203) for the immature gleba is very similiar to that of 
Mycenastrum Martinicense and the latter is certainly not a geaster. 
Cycloderma indicum cannot be an unopened Geaster 
triplex as has been stated. What it is, I do not know 
but it surely is an immature something, and not worth 
further notice 
Cycloderma Weddellii (Ann. Sci. Nat. 4-5-373) is 
also an immature something (see fig 73 from the type 
in the Museum Paris) but does not seem to me to be 
Figure 73. a geaster. It was described as “ subternatum ” and the 
type specimen certainly is (see figure 73) but that is probably a charac¬ 
ter only of this individual specimen. 
Cycloderma Ohiense (Grev. 11-95) Cycloderma platysporum 
(Grev. 16-73) Cycloderma stipitatum (Bull. Soc. Myc. 99-204) Cyclo¬ 
derma depressum (Bull. Soc. Myc. 00- 1 82) Cycloderma pusillum (at 
Kew, but not published I think) are all I am sure unexpanded geasters. 
I did not find at the British Museum where it should be, the 
type of Cycloderma apiculatum (Jour. Bot. 95-340.) 
THE GENUS DIPLODERMA. 
The original species, Diploderma tuberosum (Eink, Diss. 2-44) 
is surely unopened Geaster hygrometricus. Diploderma fumosum (Grev. 
16-2) Diploderma melaspermum (Grev. 20-35) are unopened geasters. 
Also according to Hollos, Diploderma Ungerii (Verh. Zoo. Bot. 
Wien 16-802) I have not .seen it. 
Diploderma glaucum (Grev. 15-99) Diploderma pachythrix 
(Grev 18-50) and Diploderma sabtilosum (Grev. 21-38) belong to the 
genus Mesophellia, or very close to it.* 
Diploderma suberosum (Grev. 15-99) Diploderma album (Grev. 
16-2) are based on specimens so very immature that the genus cannot 
be told. I think they are not geasters. 
OTHER UNOPENED GEASTERS. 
The genus Coilomyces, and the only species, C. Schweinitzii, 
(Jour-Acad. Nat. Sci. 53-277) is in my opinion unopened Geaster 
mirabilis. 
* A striking example of the matter that is put forth as “ science ” which is purely guess 
work is Dr. Hollos’ recent publication on the genus Diploderma. Having seen the original species 
at Berlin of Diploderma indicum and correctly referred it to unopened Geaster hygiometricus he 
jumps at the conclusion that all Diplodermas are unopened Geasters He compiles a list of nine 
species, only two of which he ever saw, and gravely informs his readers that the}- are unopened 
geasters. As a matter of fact three have elliptical fusiform subhyaline spores more closely related 
indeed to the phalloids as far as the spores are concerned than to the genus Geaster. 
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