328 BOTANICAL GAZETTE [NOVEMBER 
curtisii.‘? The general form of the plant is the same as that of P. 
lucidus, but the pileus is rarely and then only slightly varnished, and 
is yellowish in color, or with reddish-yellow spots and zones. The 
stem is exactly like that of P. Jucidus and is varnished, reddish chest- 
nut in color. In the extreme south forms with a central stem are 
more common, and then the pileus is more or less depressed in the 
center, as in fig. 2, which represents a specimen collected in Texas 
by A. M. Fercuson. The surface is often zonate, faintly or strongly 
sulcate, and sometimes radiately rugose or corrugated toward the 
margin. While Murritt first considered this as merely a geographi- 
cal form's of P. lucidus (Ganoderma pseudoboletus Murr.), he now 
treats it as a distinct species'* (G. curtisii [Berk.] Murr.). 
Another form which has come under my observation was sent 
me by Mr. M. E. Harp, of Chillicothe, Ohio, who collected it from 
dead buried roots of oak, growing among Datura stramonium. These 
plants (fig. 5) resemble the typical European form in color and 
consistency. These individual specimens were not fully grown, and 
therefore the margin is lighter colored. The pileus as well as the 
stem is laccate or varnished. There are some differences in the 
spores which will be discussed below. 
Another interesting form was received from E. R. Lak, of Cor- 
vallis, Oregon, in January, 1905. It is a large stipitate plant with a 
lateral pileus, the pileus measuring 14°™ long by 12° broad and 
5-5°™ thick. The pileus is tumid and covered with a thin crust, 
which is brittle, dark reddish brown, and laccate, similar to the crust 
of the stem. The context of the stem is also white and shows @ 
fibrous structure which radiates out into the pileus. The tubes ar 
slender, cinnamon brown, and 2-<°™ long. The plant was growing 
apparently on burnt ground from a root, probably of some conifer. 
In this specimen the varnished crust of the pileus extends over the 
under side of the margin and over the hymenophore for @ distance 
of 0.5-1°", and a new stratum of tubes 4™™ in length is deposited 
over the remaining portion of the hymenophore. In sections of me 
hymenophore this stratum tends to break away rather easily from = 
"2 Polyporus curtisii Berk. Hook. Jour. Bot. 1:101. 1849- 
*3 Bull. Torr. Bot. Club 29:602. 1902. 
4 N. Am. Flora 92:120. 1908. 
