90 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
3. Plant growing usually on Fraxinus; pileus usually stained more or less with 
ИР А РАНА ТОРЕ P. fraxineusi 
3. Plant growing usually on coniferous wood; rose-colored without and within... 
P. carneust 
Section III 
Pileus stipitate or візвбірИдйе..............................2......... 1 
Pileus sessile or effused-reflexed, not вбірйайе.......................... 9 
1. Pileus and stipe covered with a reddish varnish at least when young. ...... 2 
1. Pileus and stipe not гей-уатпінһей.................................... 3 
2. Pileus and stipe at first red-varnished, the varnish disappearing and the 
pileus becoming whitish or yellowish when mature. ......... 61. P. Curtisii 
2. Pileus and stipe strongly red-varnished, the varnish not disappearing with 
- £L еа RETI IM LL NE t 60. P. lucidus 
3. Context not more than 1 mm. thick; plants growing on the ground........ 4 
3. Context more than 1 mm. thick; plants growing on wood or attached to buried 
ры UE ALL EU. n 6 
4. Surface of the pileus marked with silky вігіаііопв........ 59. P. cinnamomeus 
4. Surface of the pileus not silky........ омоси 5 
5. Mouths of the tubes small, averaging 2-4 to а mm.; tubes usually less than 3 
BEN Е oe т. 68. P. perennis 
5. Mouths of the tubes large, averaging 0.5-1 mm. or more in diameter; tubes 
usually more than 3 mm. Іопр............................... 67. P. focicola 
6. Surface of the pileus distinctly encrusted..................... P. lobatus? 
6. Surface of the pileus not at all епсгініед.................2......... 7 
7. Context decidedly duplex, spongy above, firm next to the tubes. . .25. P. circinatus 
7. Context not дарех.................................................. 8 
8. Hymenium some shade of yellow (yellowish brown, yellowish green, etc.), 
quickly changing color when bruised; growing on or about trees and 
stumps of Pinus; spores "Һйе....................... 54. P. Schweinitzii 
8. Hymenium cinereous to brownish, not changing color when bruised; 
growing on the ground or attached to buried wood; spores brown....... 
66. P. obesus 
9. Pilei forming a densely imbricate, globose or cylindrical mass. . ..... P. graveolens 
9. Pilei not forming a densely imbricate, globose or cylindrical mass......... 10 
10. Pileus гей-уагпізһей.................................... 60. P. lucidus 
10. Pileus not геб-уагпівһей........................2222222222227277.. 11 
11. Pileus distinctly encrusted... 2.0.0.0... на... Р. lobatuss 
11. Pileus not distinctly епегініей................222222222222222222227.. 12 
[Vor. 1 
12. Plants growing on or about stumps or trunks of Pinus. . .64. P. Schweinitzit 
12. Plants growing on wood of deciduous shrubs or trees, often on living 
ЕНЕ С, Eel crise. eu. EE 13 
13. Context usually less than 7 mm. thick; plants small or medium sized ..... 14 
13. Context more than 7 mm. thick; plants large... 17 
Eos nus P ЕС 15 
ПЕ. vrai ans О а E ое 16 
1Бее p. 130 for a description of this plant. 
*For description of this plant see p. 131 under the genus Fomes. 
‘This plant is described on p. 137 under the genus Fomes. 
*For description see p. 131 under the genus Fomes. 
*For description see p. 137 under the genus Fomes. 
