346 MurRILL: POLYPORACEAE OF NoRTH AMERICA 
4. Coltricia tomentosa (Fr.) 
Polyporus tomentosus Fr. Syst. Myc. 1: 351. 1821. 
Polyporus dualis Peck, Rept. N. Y. State Mus. Nat. Hist. 30: 44. 
1878. 
Pelloporus tomentosus Quél. Enchiridion, 166, 1886. 
Macronoporus tomentosus Ell. & Ever. Journ. Myc. 5: 28. 1889. 
Onnia tomentosa Karst. Finlands Basidv. 326. 1889. 
Xanthochrous tomentosus Pat. Cat. Tun. 52. 1897. 
This species has frequently been collected by North American 
mycologists, but has rarely been correctly determined by them. 
Some European botanists are no less confused by the two Friesian 
species, P. fomentosus, described in 1821 and P. circinatus, de- 
scribed in 1848. At Upsala there is no type specimen of the latter 
species, while types of P. tomentosus correspond in all respects 
with our common species, the hymenium bearing the same kind of 
spines and the context being dual instead of homogeneous. In- 
deed, I have seen nothing in any foreign herbarium to indicate 
that P. circinatus is specifically distinct from P. tomentosus. 
This fungus usually grows on or near the ground beneath pines, 
spruces and other coniferous trees. Collections are at hand from 
Bavaria, A//escher ; Sweden, Romell; Canada, Macoun ; Maine, 
Curtis; New Hampshire, Minus ; Vermont, Burt, Massachusetts, 
Clarke; Pennsylvania, Stevenson; New York, Peck; New Jersey, 
Ellis ; West Virginia, Nuttall; Colorado, Underwood & Selby. 
5. Coltricia obesa (Ell. & Ever.) 
Polystictus obesus Ell. & Ever. Bull. Torrey Club, 24: 125. 1897: 
This species was collected at Newfield, New Jersey, and at 
Philadelphia, Pennsylvania, growing on buried pine branches. It 
is thick and spongy in texture, depressed, rusty cinnamon, azon- 
ate, with dark cinnamon stipe, which is central and usually much 
enlarged below. The spores are elliptical, ferruginous, 7-8 X 4~ 
5. No spines are present. The plant resembles Coltricta pe?- 
ennis in color, but is larger, thicker, more fragile and entirely free 
from zones. From C. /omentosa, it differs in being darker in color, 
homogeneous in texture and free from cystidia. Type specimens 
are now in the herbarium of the New York Botanical Garden. 
