150 FUNGUS-FLOEA. 



I. MESOPUS. With a central stem. 

 * Pileus fleshy, somewhat brittle. 



Hydnum imbricatum. Linn. 



PiIiur3-4 in. across, flesHy, plane, or slightly depressed, 

 •umber, scaly ; spines crowded, up to J in, long, greyish, 

 recurrent; stem 1-3 in. long, 1-2 in. thick, even; spores 

 broadly elliptical, minutely warted, 6-7 x 5 fx., coloured 

 pale yellow-brown. 



Eydnum imh-icatum, limn., Suec.n. 1257 ; Stev. Fung., p. 

 234. 



In pine woods. Flesh dirty white. There are two forms, 

 one with a plane pileus covered with thick, persistent scales, 

 the other with the pileus subinfundibuliform with thinner 

 scales that eventually disappear. (Fries.) 



Pileus 2-5 inches broad, thick and fleshy, plane or slightly 

 convex, and rounded at the margin, at length somewhat 

 hollowed in the centre, pretty regular in form, varying in 

 colour from reddish to a kind of mouse-brown, scaly ; scales 

 imbricated, numerous, the central ones being often mere 

 cracked portions of the pileus, which renders that part 

 tessellated. Flesh pale, huffish, or reddish, Hymenium com- 

 posed of numerous, very short, obtuse, greyish-white, entire 

 spines of nearly equal length. Stipes central, 1-2 inches 

 long, often above 1 inch thick, firm, irregular, whitish. No 

 plant can be better characterised than the present one by its 

 scaly pileus and short thick stem. (Grev.) 



Hydnum squamosum. Schaeff. 

 Pileus 1^2^ in. broad, fleshy, rufous-brown, smooth 



Fig. 15, Section of same, showing the scattered warts that are more or less 

 excavated or tubular at the apex (the warts are much too long in the 

 section) ; slightly mag. ; — Fig. 16, Kneiffia setigera, portion of a plant ; 

 nat. size ; — Fig. 17, Section of same, showing the minute, scattered, 

 delicate spinules ; slightly mag. ; — Fig. 18, Odontia fimbriata, portion of 

 ,a plant, showing the granular surface, more or less traversed by branched, 

 cord-like, strands of mycelium; nat. size; — Fig. 19, Section of same, 

 showing the hemispherical, minute granules with penioillate apices ; 

 slightly mag. 



