1914) 
OVERHOLTS—THE POLYPORACEJE OF OHIO 89 
43. Plants mostly төтіріпміе..........................................;. 44 
48. Plants not mostly товарный в............... ось бо reap d 45 
44. Pileus azonate, margin often іпгоЦеа.................. 10. P. semipileatus 
44. Pileus zonate, margin always straight.................. ss. 21. P. zonalis 
45. Pileus corky in texture when fresh, usually rather thick and firm... ........ 46 
45. Pileus soft and spongy in texture when ітезһ.......................... 49 
46. Pileus distinctly enerusted; hymenium and context pinkish or гову when 
fresh; plants usually growing on Ртатітив................ P. frazineus 
46. Pileus not encrusted; hymenium and context whitish when fresh; plants 
au uiv on Frazénus. ....... Leere rr ouo a 47 
47. Pileus more than 2 cm. thick; tubes more than 4 mm. long... .25. P. robiniophila 
47. Pileus not more than 2 cm. thick; tubes not more than 4 mm.long.......... 48 
48. Plants with a sweet anise ойбог........................... 23. P. fragrans 
48. Plants with no odor, or odor disagreeable................ 24. P. fumosus 
49. Mouths of the tubes minute, averaging 6-7 to a mm.; plants with a sweet 
acid «ао... t ue RE B 14. P. galactinus 
49. Mouths of the tubes larger, averaging 1-4 to a mm. .................... 50 
50. Pileus generally less than 4 сіп. Бговй............................. 51 
50. Pileus generally more than 4 cm. Ьтояй........................... 53 
51. Pileus pubescent; mouths of the tubes dentate, lacerate, or irregular....... 52 
51. Pileus glabrous; mouths of the tubes entire; plants with a sweet acid odor 
12. P. chioneus 
52. Pileus and spores (in mass) often bluish or slate-colored; tubes equalling 
in length the thickness of the соһфбехб..................... 11. P. caesius 
52. Pileus and spores pure white; tubes shorter in length than the thickness 
"om oc 0 M "————— 13. P. lacteus 
53. Plants growing only on the wood of coniferous ітевв.................... 54 
53. Plants growing only on the wood of deciduous ігеев..................... 55 
54. Tubes usually more than 5 mm. long, the mouths averaging 2-3 to a mm. 
19. P. borealis 
54. Tubes usually less than 5 mm. long, the mouths averaging 4-5 to mm. 
18. P. guttulatus 
55. Margin of the pileus thick and тойпбей........................ 17. P. obtusus 
55. Margin of the pileus thin and асшіе................................... 56 
56. Mouths of the tubes large, averaging 1-2 to a mm.......... 16. P. delectans 
56. Mouths of the tubes small, averaging 3-5 to а mm. ................ 57 
57. Fresh plant with a disagreeable odor; context very hard when dry .20. P. Spraguei 
57. Fresh plant with no disagreeable одог....................... 15. P. spumeus 
Section II 
Pileus and hymenium deep сіппаһат-гей.............................. 1 
Pileus and hymenium not deep cinnabar-red (rosy or orange-colored in some 
ОЗОР ое... e 2 
1. Pileus less than 5 mm. thick, often 2опайе.................... 44. P. sanguineus 
1. Pileus more than 5 mm. thick, never zonate................ 46. P. cinnabarinus 
2. Hymenium bright sulphur-yellow in fresh plants........... 42. P. sulphureus 
2. Hymenium not bright вШрһш-уеПоу.............................. 3 
3. Plant growing only on the wood of Quercus and Castanea; pileus yellowish or 
orange-ooloted Е о р. У аео ео с сеа 48. P. Pilote 
1 For description see p. 130 under the genus Fomes. 
