346 Murrill : Polyporaceae of North America 



4. Coltricia tomentosa (Fr.) 



Poly poms tomentosus Fr. Syst. Myc. I : 351. 182 I. 



Polyporus Jualis Peck, Rept. N. Y. State Mus. Nat. Hist. 30 : 44. 



1878. 

 Pclloponts tomcntosus Quel. Enchiridion, 166. 1886. 

 Macronoporus tomcntosus Ell. & Ever. Journ. Myc. 5: 28. 1889. 

 Onnia tomentosa Karst. Finlands Basidv. 326. 1889. 

 Xanthoclirous 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. tomcntosus, described in 182 1 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. tomcntosus. 



This fungus usually grows on or near the ground beneath pines, 

 spruces and other coniferous trees. Collections are at hand from 

 Bavaria, Alleschcr ; Sweden, Rome//; Canada, Macoun ; Maine, 

 Curtis ; New Hampshire, Minns ; 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 a. No spines are present. The plant resembles Coltricia pcr- 

 e finis in color, but is larger, thicker, more fragile and entirely free 

 from zones. From C. tomentosa, 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. 



