330 BOTANICAL GAZETTE [NOVEMBER 
mined only by observation of individual plants from year to year. 
They appear more likely to be the result of periodic variations in a 
single season’s growth, like some of the similar strata in Fomes 
fomeniarius. The plant has the appearance of being normally an 
annual, which under certain conditions may persist for a second 
season and develop a second depauperate layer of tubes; or this 
layer may be developed at the close of the first season, often some 
unfavorable condition inhibiting the growth for a longer period than 
usual. It appears to be specifically identical with Ganoderma orego- 
nense Murrill,*5 recently described from Oregon as growing on a log 
of Picea sitkensis. 
The spores of the species discussed in this paper present some 
very remarkable peculiarities in form and markings, which seem 
to have been misinterpreted by all those who have attempted to 
describe them up to the present time. During the past autumn 
and winter I have made a critical examination of the spores of the 
species mentioned above, and have not been able to confirm the de- 
scriptions thus far given. KArsTEN in 1889'° says the spores sob 
warty (sporerna aggrunda eller elliptiska, vértiga, gulbrunaktiga). 
PATOUILLARD in 188777 describes and figures the spores of the - got 
Ganoderma as verrucose (verruqueuses) and cites Ganoderma lucidum 
as one of the typical species. Later'® (p. 66) this is repeated where he 
places Ganoderma lucidum in the section of Ganoderma having 
verrucose spores (spores verruqueuses). SACCARDO’? says that the 
spores of this species are slightly verrucose (forma typica spors 
ovoides, leviter verrucosis), and BrEsADOLA states that they ar 
verrucose.*° MuURRILL in 1902?" and again in 19087? describes them 
15 N. Am. Flora 9?: 119. 1908. 
*6 Kritisk Ofversigt af Finl. Basidsv. 327. 18809. 
*7 Les Hyménomycetes d'Europe 142. pl. 3. fig. 21. 1887. 
"Le genre Ganoderma. Bull. Soc. Myc. France 5:63-83. pls.'I0, If- ne 
also PATOUILLARD, N., Essai taxonomique sur les familles et les genres der: BY 
mycétes 105. fig. 58, 3b. TgQ00. 
79 Sylloge Fung. 6:157. 1888. 
2° Hymenomycetes Hungarici Kmetiani. Atti Acad. Sci. III. 3:73- 1897- 
* Bull. Torr. Bot. Club 29:601. 1902. 
22.N. Am. Flora 97: 118. 1908. 
