19141 
OVERHOLTS—THE POLYPORACEJE ОҒ OHIO 139 
4. Hymenium light brown in сойют.......................... 4. T. malicola 
4 Hymen white or WIE.. e] soares boa EO 5 
5. Pileus white or light colored; mouths of the tubes averaging 1-2 to a mm. 
1. T. sepium 
5. Pileus cinnamon-brown; mouths of the tubes averaging about 3 to a mm. 
2. T. serialis 
6. Sporophore woody, perennial; hymenium bright yellowish brown in color; 
mouths of the tubes often somewhat daedaloid; growing only on 
PNE re NNA ERES (dis c 8. T. Pint 
6. Sporophore coriaceous or corky; hymenium white or dull brown; growing 
in wood wd deciduous ігесв............... cdo les cov a 7 
T PRENDE of hispid. ................... Ber E нь 8 
7. Pileus finely tomentose or бі8іоОйв.................................... 9 
8. Mouths of the tubes large, averaging 1 to a mm.; pileus more than 4 mm. 
с ee er ne Soe 7. T. Peckit 
8. Mouths of the tubes medium sized, averaging 2-3 to а mm.; pileus less 
than 4 mm. ЯМек....,....................й../.// 2222 6. T. rigida 
9. Context lesa than 1 mm. tbick................... 2... Sc n 6. T. mollis 
9. Context more than 1 mm. thiek.................5. n 4. T. malicola 
I. Т. sepium Berk. Hooker’s Lond. Jour. Bot. 6:322. 1847. 
Plants annual, sessile or semirespuinate, imbricate or single; 
pileus dimidiate, 0.7-1 x 0.8-2.5 х 0.2-0.7 cm., flexible when 
fresh, eorky when dry, grayish to pallid or wood-colored, mi- 
nutely tomentose to glabrous, azonate, margin thin and acute; 
context white or pallid, tough when fresh, soft-corky when 
dry, less than 1 mm. thick; tubes 2-5 mm. long, mouths white 
or pallid, circular or rarely angular or sinuous, large, averaging 
almost 1 to a mm., the dissepiments thick and always entire; 
spores (teste Murrill) oblong, smooth, hyaline, 12 x 5 y. 
On fence posts, pickets, and other structural timber or dead 
wood. 
Distinguished from Т. serialis Fries by the short tubes, the 
whitish color of the pileus, and by the much larger mouths of 
the tubes; from T. rigida Berk. & Mont. by the lighter colored 
context, and the larger tube mouths. 
2. Т. serialis Fries, Hymen. Eur. 585. 1874. [2nd ей.) 
Polyporus serialis Fries, Syst. Myc. 1:370. 1821. 
Plants annual, sessile, effused-reflexed, or resupinate; pileus 
dimidiate, 0-1 x 1-4 x 0.3-0.8 cm., corky when fresh, hard 
and firm when dry, cinnamon-brown to coffee brown, glabrous, 
zonate, margin rather thick but acute; context white, fibrous, 
not more than 1 mm. thick; tubes 2-6 mm. long, the mouths 
