REVISION OF THE Хоктн AMERICAN HypnacEaE 155 
fundibuliform and otherwise unlike ours, the figures in European 
icones drawn later as actual representations of М, velutinum Fries 
are excellent figures of our plant in all particulars. As it appears 
from Patouillard and Gillet’s figures and from the descriptions ac- 
companying them that Æ. spongiosipes Peck is a plant also found 
in Europe, the question is, did Fries really describe that plant as 
H. velutinum? It appears to me that in the absence of authentic 
specimens of Я. velutinum Fries for comparison, the weight of evi- 
dence is that H. spongiosipes Peck is too near 77. velutinum Fries 
to warrant its recognition as a distinct species. 
The plant is quite common with us and maintains fairly con- 
stant characters. It can be readily distinguished from closely 
related species by its uniform brown color, convex or plane pileus, 
and its dry substance in two distinct layers. 
4. Hydnellum Nuttallii sp. nov. 
Plant terrestrial, mesopodous, nedum size ; pileus obconic, 
deeply depressed to mewhat кыш. thickest at the 
center, thinning uniformly to the margin, 4-6 cm. wide, I cm. or 
less thick near the center; surface subeven, radiately subrugose or 
fibrillose when fresh, grayish umber ; margin thin, acute, coarsely 
plicate o1 fluted, deflexed, curled when dried, subfertile with short 
teeth ; substance spongy-tomentose in upper half of pileus, thickest 
at the center, umber, lower part of pileus harder more compact 
darker of uniform thickness about І mm., continuous with hard 
central core of stem; stem central, uneven, surrounded below by 
bulbous mass of spongy tomentum, 0.5 cm. wide, 4 cm. long, bul- 
bous base 1.5 cm. wide; teeth capillary more or less decurrent, 
dark umber to black, 7 mm. or less long, 0.15-0.25 mm. wide, about 
2 to one millimeter, longest teeth about one fourth of the distance 
from the stem to the margin; spores apparently few, subtubercu- 
late, м brownish, 4-5 м wide. 
Has.: On ground т woods. May-July. 
ye. New York, Peck ; West Virginia, Nuttall 822; North 
Carolina, Atkinson 4340. 
Nuttall's 844 in the New York Botanical Garden is the type 
of the species. Тһе plant in structure is similar to /7. velutinum 
but very distinct in the form of the pileus, in its subrugose 
not tomentose surface, and in the long capillary teeth. Atkinson 
4340 differs in some respects from the type but in characters that 
