1919^ The Hydnums of ISToeth Carolina 191 



will turn the water a deep brownish wine color in a short time, while 

 plants of //. velutinum will turn the water only a pale cider color. The 

 dried plants have no odor. When soaked again thev have a faint 

 rather pleasant odor, while in H. velutinum the odor is not restored 

 on wetting the dried plants. 



1243. Among oak leaves in open woods, one-third mile west of graded scliool, 



September 22, 1914. Photo and drawing of spores. Type. 

 1847a. In moss in mixed woods near Battle's Branch, September 20, 1915. 



8. Hydnellum humidum Banker 



Hydnum infundihulum Swartz. ? 



Plates 23, 24, and 29. 



A large, thin, expanded plant with a slender central or eccentric 

 stem, often compound by fusion, growing in woods-mold near branches 

 or springs or in depressions in deciduous woods. Cap up to 10 cm. 

 wide, irregular, rough with radiating ridges and channels, more or 

 less infundibuliform, especially in youth, in age usually depressed 

 in center with the margin broadly expanded and more or less 

 drooping; rather obscurely zonate; color light snutl'-brown, near 

 sayal-brown (Ridgway), with lighter zones towards margin, in old 

 age turning deeper blackish-brown to black; margin repand and 

 irregular, whitish, fertile. Flesh thin, fibrous-fleshy, firm and brittle 

 on drying, only 1.5-2 mm. thick, except towards center; homogeneous 

 (no spongy upper layer), no noticeable taste or odor. 



Spines densely crowded, short, 1.5-2 mm. long, delicate, whitish 

 at the tips to maturity, then becoming brown all over. 



Stem 3-4 cm. long, 8-10 mm. tliick above, enlarged and irregidar 

 below, color of cap. 



Spores (of N'o. 130G) light smoky-brown, subspherical, roughly 

 tuberculate, 3.4-5^- 



While the substance of the cap is somewhat fleshy, it is tougher 

 and much thinner than in species of Hydnum or Sarcodon. Plants at 

 the New York Botanical Garden of HydneJhim Jiinnidiini fn^ii Xcw 

 Jersey, determined by Ranker, look very like the above ]ilauts and 

 show the same tendency to be (piickly attackcil by grubs and mold. 



