326 BOTANICAL GAZETTE [NOVEMBER 
colored context, and the longer persistence of the individuals of the 
European form, since this usually does not disintegrate so soon. 
But these characters vary in individual plants and seem to mark our 
form on the hemlock-spruce merely as a physiological or biological 
form of the European species, rather than as a distant species as it 
is regarded by MuRRILL® (p. 606). 
P. lucidus is rarely reported on conifers in Europe, though it 
probably is common enough in certain of the mountainous regions. 
KarsTEN’? reports it on Abies excelsa in Finland. In 1905 I found 
it quite common in the Jura Mountains‘' near Pontarlier and Bou- 
jeailles, Province Doubs, France, on dead stumps and logs of the 
common fir (sapin) of that region. These plants, while showing 
great variation in form, do not depart in this respect from the typical 
orm. The stem varies from lateral to central in some individuals. 
There is, however, a marked difference in color, the Jura specimens 
on the fir having the varnished surface darker in color than those 
which I have seen from frondose trees in Europe, but also darker 
than our form on the hemlock-spruce, the color being 4 dark ma- 
hogany red, finally becoming nearly black. The color of the context 1s 
brownish like that of the typical form. So far as I could observ®, 
I could see no evidence that this form is perennial, nor have I seen 
perennial specimens of the typical form. I sent specimens of these 
plants collected on the fir in the Jura Mountains to M. E. BouDIeER, 
of Montmorency, and at the same time some of the American _— 
collected on the hemlock-spruce. The latter he pronounced a typic 
form of P. lucidus, while,the former he regarded merely as 4 black 
form of the same species, which he says grows in the Vosges and 
Jura in France and Germany. The spores are identical in structure 
and size in all the above-mentioned forms. 
The form in the southern United States on roots, stumps, ¢ 
of frondose trees, seems to be distinct enough to be regarded 98 4 
distinct species. BERKELEY so regarded it and described it as . 
° Ganoderma tsugae Murrill. The Polyporaceae of N. Am. IL. The genus Gane 
derma. Bull. Torr. Bot. Club 29:599-608. 1902; N. Am. Flora 9#:118: 19°: 
to KARSTEN, P. A., Myc. Fenn. pars tertia, Basidiomycetes, in Bidrag till RAP 
nedom af Finlands Natur Och Folk 2 52254. 1876. : 
1 The collection and study of this material, with many other European sd 
’ was made possible because of a grant from the Botanical Society of Am 
