1919~\ The Hydnums of ISToeth Caeolhsta 171 



Flesh solid, firmer and shorter than that of cap, light grayish-brown, 

 turning deeper flesh brown when cut. 



Spores a dull brown, about avellaneous of Ridgway, roughly iso- 

 diometric, star-shaped and other irregular forms from the large tuber- 

 culate warts, 6.3-7.2 x 6.3-8.1m. 



This large and interesting species is new to the South, having been 

 known before only from i^ew York. It is at once distinguished from 

 H. imbricatum by the smooth, leathery surface of a pale flesh color, 

 and by the very different spores. 



1836. In rather dry soil, pine and oak woods south of Piney Prospect, Sep- 

 tember 20, 1915. Photo and drawing of spores. 



6. Hydnum Underwoodii (Banker) 



Sarcodon fennicus Karst. ? 



Plates 7 axd 27. 



Cap up to G.5 cm. wide, slightly convex or nearly plane, somewhat 

 depressed in center when mature, rather wavy and irregular, the 

 margin often indented ; surface dry, covered all over with rather 

 small low scales or the margin merely floccose or nearly smooth ; ap- 

 parently less scaly in youth ; color vinaceous brown, about fawn ; 

 margin very thin, free for about 1-2 mm. and bent under. Flesh 

 white, about 4-5 mm. thick near stem, firm, fleshy, elastic, bitter. 



Spines nearly white when young, soon a clear brown except for the 

 ashy-white tips. They are quite fine and short, only 1-2 mm. long, 

 sharply pointed, very decurrent, usually almost to the base of the 

 stem, becoming shorter downwards to mere granules below. When 

 dry they are very brittle and easily fall away, and become a uniform 

 brown, about snuff brown to sudan brown. 



Stem 3.5-7 cm. long, a])0ut 8-10 mm. thick near center, sometimes 

 swollen and fistulose, always quite crooked, usually strongly bent at 

 the ground, expanding into the cap above, tapering downward, and 

 continuing to taper more rapidly in the ground to a sharply pointed 

 root, deep snuff l)rown, the rooting base abrui)tly pure white: llosh 

 firm, toughish, elastic, brownish. 



