Mycological Flora of the Rockies 121 



few branches or a small number of confluent stems. Only oc- 

 casional plants possess the large number of pilei shown in these 

 figures. The color in the figures cited cannot be taken too 

 seriously, in view of the variations in the plants of the terres- 

 trial group to which P. confluens belongs. I have no doubt 

 that the Tennessee plants are the true P. confluens, and although 

 the Colorado plants do not match at all at present, I think they 

 must be considered the same thing. 



(B) Leal. Aug. Rare. 



These collections were at first referred to P. confluens, but 

 further study makes this reference doubtful. Only one collection 

 was made. The tubes when dried are ''Saccardo's umber" to 

 " sepia," very regular even in the mature plant, angular, and 

 the mouths do not become lacerate-dentate. Stems simple or 

 sparsely branched, distinctly "orange-rufous" (Ridg.), probably 

 with an orange-rufous mycelium. The pileus is rather thin, 

 with a membranous incurved margin, whitish-lutescent when 

 fresh, glabrous, and with a cuticle; the pileus dries much 

 thinner than those under (A). Spores, etc., hke P. confluens. 



It is not unlikely that this is the long-lost Polyporus politus 

 Fr. It is true the pileus does not show the red color except as 

 a tint. In I cones, Fries states that his figures were made from 

 dried specimens, and doubtless the drawings were somewhat 

 conventionalized. On the other hand, it would be easy to see 

 in Fries's figure of Polyporus suhsquamosus our diffracted-scaly 

 specimens of P. confluens described above. 



As to P. fractipes Murr. and P. peckianus Sacc, one cannot 

 be very positive. A specimen of what is apparently a good 

 P. peckianus is in my herbarium; it differs at once from the 

 Colorado species by its smaller pores, and according to Peck's 

 original description, as P. flavidus {N. Y. Mus. Rep., 26: 68), 

 the pileus is depressed-funnel form, and its pores are yellow, 

 while according to Lloyd (Vol. V., letter 62, note 429), its 

 spores are smaller, 3.5 x 2.5 /x. P. fractipes Murr. is said to 

 have small pores also, 4-5 to a mm., and the pileus is much 

 thinner than that of the Colorado plants; other characters agree 

 rather well with form (A). There remains P. Whitei (Murr.). 



