Hydnacese 



tose and buff-brown in the upper stratum, the lower half hard and black. Hydnum. 

 Spines short, at first white, then whitish or grayish. Stem short, often 

 irregular, compressed or growing together, blackish when moist, buff- 

 brown when dry, covered with a thick dense tomentum, which is fre- 

 quently more abundant toward the base, hard and black within. Spores 

 white, globose, 4~5/*. 



Pileus 1-3 in. broad, sometimes 2 or 3 confluent. Stem 12 in. long. 



Ground in mixed woods. Gansevoort. August. Peck, 5<Dth Rep. 

 N. Y. State Bot. 



Specimens from pine woods New Jersey, T. J. Collins, September, 

 1897. i% in. across. Frequent at Mt. Gretna, Pa. 



Edible. Good flavor, but tough. 



H. velle'reum Pk. This species appears to be very much like the 

 preceding one (H. albonigrum Pk.) from which it is separated by its 

 smaller size and the paler brownish or rusty-brown substance of its 

 pileus and stem. Peck, 5oth Rep. N. Y. State Bot. 



At Mt. Gretna, Pa., the species grows with H.. albonigrum. In 

 quality it is the same. 



(Plate CXXXIII.) 



H. al'bidum Pk. Pileus fleshy, thin, broadly convex or nearly 

 plane, subpruinose, white. Flesh 

 white. Spines short, white. Stem 

 short, solid, central or eccentric, white. 

 Spores subglobose, 4-5/4 broad. 



The whitish Hydnum is uniformly 

 colored in all parts. It grows in 

 groups or in clusters. In the latter 

 case the caps are sometimes irregular 

 because of the crowded mode of 

 growth and the stems are occasionally 

 eccentric. It is a small species not 

 liable to be mistaken for any other 

 except possibly for very small pale 



forms of the spreading Hydnum. But wholly white examples of this 

 species have never been seen by me. 



The caps are 1-2 in. broad and the stems are generally about I in. 

 long and 3-5 lines thick. 



499 



HYDNUM ALBIDUM. 



