1910] The Hydxums of IJ^orth Carolixa 181 



86. On a dead oak limb behind athletic field, October 20, 1911. 

 293. Woods near Chapel Hill. 



350. At base of stump, Battle's Park, October 8, 1911. 

 1219. On dead oak branches, swamp of New Hope below Durham bridge, 



July 27, 1914. Photos. 

 1235. On rotting wood by branch above Meeting of the Waters, September 



21, 1914. 

 1607. On rotting wood in three clumps, two below Strowd's Spring, the other 



above Durham bridge, June 23, 1915. 

 2012. On stump by street near Dr. Herty's, November, 1915. 

 2243. On a deciduous log, swamp of New Hope Creek, below Durham bridge, 



June 24, 1916. 

 2313. On rotting wood near mouth of Tenny's Ravine, June 29, 1916. 



Middle and upper districts, on sticks. Curtis. 



GeXUS HYD^^^ELL^M. 



Plants with cap and stem, but often deformed or fused; texture 

 tough, in some species thin and homogeneous, in others thick and 

 composed of two layers of different texture; spores unevenly tuber- 

 culate. Growing on the ground. The genus cannot be distinguished 

 from Phellodon, except, by the spores, and this is by no means easy 

 even for experienced students. 



Key to the Species. 



Flesh thin, homogeneous, tough and flexible when 

 fresh; plants small to medium. 



Cap strongly zonate, thin, margin pale and often 



pinkish H. zonatum (4) 



Cap scarcely zonate, less thin, margin not 



whitish H. scrobiculatum (3) 



Flesh rather thin, homogeneous, fleshy-tough and 



flexible; plants usually large H. htimidum (S) 



Flesh thick and of two textures, soft and spongy above, 

 hard below. 



Color a deep orange-saimon, at least on younger 



parts H. floriforme (5) 



Color not as above. 



Taste peppery, odor of fenugreek IT. (Uuholus (1) 



Tasfe not peppery. 

 Cap creamy buff, the center becoming brown. 



Plant compact and heavy If. fcrrufjiiK's (6) 



Plant light and slender H. carol in ianum (7) 



Cap cinnamon J)rown, plane or convex, the 



margin pale when growing II. vclutiuiim (2) 



Cap grayish umber, depressed or infundibull- 



form II- XnttnUii* 



*Seo foot-noto on page 183. 



