MURRILL : POLVPOKACEAE OF NoRTH AMERICA 117 



tubes; tubes unevenly stratified, 0.5-0.75 cm. long each season, 

 1-2 to a mm., ochraccous within durint^ the first season, afterwards 

 latericeous, mouths circular, ochraccous, edges obtuse, rather thin : 

 spores ellipsoidal, smooth, thick-walled, ferruginous, 7-8 x 9/'. 



Collected by Karle in August, 1900, on a standing trunk of 

 Junifcnis in the El Capitan Mountains, New Mexico, at an attitude 

 of 7,000 ft. It is closely related to /'. jiinif^cnnns (Schrenk), but 

 it is much more rimose. has larger pores and lacks the annual 

 projecting margins of the older tube-layers so characteristic of 

 that species. 



11. Pyropolyporus conchatus (Pers.) 



Bo'ctiis salicinns Pers.; Gmel. S\st. 2: 1437. J79> ; S)'n. 

 543. 1801. Not /). salicuws Hull. Herb. I-^r. //. 4^3./. /. 1789. 



Boletus concJiatus Pers. Obs. i: 24. 1796; Syn. 538. iSoi. 



Polyporiis salicinns Fries, Syst. Myc. i : 376. 182 i ; Icon. //. 

 183./. 2. 



Polyporns civichatns Fries, Syst. Myc. i : 376. 1821. 



FoDhs saliciinis Gill. Champ. Fr. i : 684. 1878 ; Karst. Icon. 



4,/ 5- 1883. 



Ph : 11 inns sa 'ici?ins Quel. Ench. 172. 1886. 



Boletus salicinns Pers. and Indctus conchatus Pers. were differ- 

 ent forms of the same plant. Most of the old willow stumps in 

 Sweden are covered with it. On the sides of the stumps it is B. 

 salicinns and farther up, where the pileus is reflexed, it is B. con- 

 chatus. This fungus is quite common in Europe and America on 

 a variety of hosts. The following list includes only a few of the 

 collections examined : Sydow, Myc. Mar. no. 3423 ; P^llis, N. A. 

 Fungi no. 918; Romell, P'ungi Suecici no. 12; pjigland (Plow- 

 right), Sweden (Murrill), New York (Underwood, Ellis, Shear), 

 Indiana (Underwood), Canada (Macoun), Ohio (Lloyd, Morgan), 

 Pennsylvania (Rau). 



12. Pyropolyporus Haematoxyli sp. no\'. 



A smooth applanate plant of considerable size with brownish 

 tubes and honey-yellow context. Pileus woody, dimidiate, sessile, 

 thickest behind, 12 X 14 X 4 cm.; surface glabrous, dark brown, 

 shallowly concentrically sulcate, marked with numerous darker 

 concentric lines; margin fulvous, thin, rounded, slight!}' undu- 

 late : context corky to woody, indistinctly concentrically banded. 



