[Vol. 2 



694 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



often black in dried specimens, sterile below; context white 

 or pallid, firm and corky when dry, 1-4 mm. thick, in large 

 specimens separated from the hymenium by a narrow dark 

 line; tubes less than 2 mm. long, the mouths grayish black 

 to black, scarcely visible to the naked eye, averaging about 

 6 to a mm.; tramal tissue decidedly brown in color under the 

 microscope; spores oblong or oblong-ellipsoid, rarely slightly 

 curved, smooth, hyaline, 3.5-5 X 1.5-2.5 n ; cystidia none. 



On dead wood of deciduous trees. 



Illustrations: Pat. Tab. Anal. Fung. /. 142. — Rostk. in 

 Sturm's Deutsch. Fl. 3: fasc. 16. pi. 38. 



Specimens examined: Cooke, Fung. Brit. 2. — Ell. N. Am. 

 Fung. 6.— Ell. & Ev. Fung. Col. 206.— Krieg. Fung. Sax. 1319. 

 — Rabenh. Herb. Myc. 412. — Rav. Fung. Am. 421. — Shear, N. 

 Y. Fung. 32.— Mo. Bot. Gard. Herb. 4222 (Newfoundland), 

 4223 (New York), 3851 (Missouri).— Burt Herb, (collections 

 from Vermont, Ohio, Massachusetts, and New York). — Over- 

 holts Herb. 284 (Ohio), 572 (Missouri), 2239 (New York), 

 1780 (Colorado), and others. 



2. Polyporus crispus Pers. ex Fries. Plate 23, fig. 7. 



Pilei more or less densely imbricate and overlapping, 

 2-7 X 1-5 X 0.1-0.4 cm., gray to avellaneous, sometimes cin- 

 namon to clay-colored in herbarium specimens, adpressedly 

 fibrillose toward the margin, usually strigose toward the 

 base, zonate or azonate; margin very thin, radiate-lineate, 

 crisped or wavy, often becoming black, sterile below ; context 

 white or pallid, often brownish in herbarium specimens, soft 

 and fibrous to corky, 1-3 mm. thick, usually separated from 

 the hymenium by a narrow dark line ; tubes 1-3 mm. long, the 

 mouths grayish black to black, unequal, irregular, averaging 

 3-6 to a mm.; tramal tissue decidedly brown in color under 

 the microscope; spores oblong or oblong-ellipsoid, smooth, 

 hyaline, 3.5-4.5 X 1.5-2.5 n ; cystidia none. 



On dead wood of deciduous trees. 



Illustrations : Fl. Dan. pi. 1850. 



Specimens examined: Romell, Fung. Sax. 8 (as P. adus- 

 tus). — Thuem. Myc. Univ. 604 (as P. fumosus). — Mo. Bot. 



