1915] 



OVERHOLTS STUDIES IN THE POLYPORACEAE 695 



Gard. Herb. 42868,42848 (Arkansas), 4180 (Missouri).— Over- 

 holts Herb. 386 (Indiana), 105 (Ohio). 



3. Polyporus Burtii Peck. Plate 23, fig. 4. 



Pilei not closely imbricate, 1-2.5 X 2-5 X 0.3-0.5 cm., gray 

 or pinkish buff, finely tomentose, azonate; margin acute but 

 rather thick, deflexed, even, concolorous, fertile below; con- 

 text soft and sub-floccose in dried plants, 2-4 mm. thick ; tubes 

 1-2 mm. long, the mouths grayish black to smoky black, un- 

 equal, irregular, averaging 2-4 to a mm.; tramal tissue de- 

 cidedly brown in color under the microscope; spores oblong- 

 ellipsoid, smooth, hyaline, 4-4.5 X 1.5-2 n ; cystidia none. 



On stump of yellow birch. Known only from the type 

 locality, Middlebury, Vermont. 



Specimens examined: Burt Herb, (type collection). 



4. Polyporus fumosus Pers. ex Fries. Plate 23, fig. 3. 



Pilei simple or imbricate, 2-10 X 3-15 X 0.5-2 cm., white 

 to ochraceous or smoky white, sometimes stained with red- 

 dish, finely tomentose to glabrous, sometimes with a rather 

 broad, marginal furrow; context white or pallid, soft corky 

 to woody when dry, 2.5-10 mm. thick, usually zonate, always 

 separated from the hymenium by a narrow dark line, anise- 

 scented or with a disagreeable odor; tubes 1.5-4 mm. long, 

 the mouths white to grayish black, usually becoming black 

 when bruised, averaging 3-4 to a mm. ; tramal tissue hyaline 

 or nearly so under the microscope; spores oblong-ellipsoid, 

 smooth, hyaline, 4.5-6 X 2-3 p; cystidia none. 



On dead wood of deciduous trees, especially elm. 



Illustrations: Fries, Ic. Hym. pi. 181 (as P. salignus). — 

 Bres. Fung. Trid. pi. 135 (as P. imberbis). — Massee, Brit. 

 Fung. Fl. /. 14-15.— Eostk. in Sturm's Deutsch. Fl. 3: fasc. 

 16. pi. 42. 



Specimens examined: Ell. & Ev. N. Am. Fung. 2902. 

 Shear, N. Y. Fung. 31. — Thuem. Myc. Univ. 5. — Mo. Bot. Gard. 

 Herb. 43648 (Missouri), 4277 (Kansas).— Overholts Herb. 455, 

 527 (Ohio), 436 (Canada), 370 (Indiana), and others. 



