THIRTEENTH REPORT. 
( Hydnaceae ) . 
(g) Hymenopliore of gelatinous spines: Tremellodon. 
(g) Hymenopliore in form of folds or wrinkles. Phlebia. 
(g) Hymenopliore in form of minute warts, etc (1) 
(g) Hymenopliore with evident spines: (2) 
(g) Hymenopliore with false gills or pores which become teeth in age: 
U) 
1. Warts rounded at apex: Grandinia. 
1. Warts many-parted or ciliate at apex: Odontia. 
2. Spines knob-like, thick, tufted or scattered, obtuse: Radulum. 
2. Spines with acute tips (3) 
3. Spores colorless : Hydnum. 
3. Spores colored : Phaeodon. 
4. Fruit-body leathery-tough : Irpecc. 
4. Fruit-body fleshy: Sistotrema. 
( Polyporaceae .) 
(h) Hymenopliore reticulated or wrinkled. Merulius. 
(h) Hymenopliore of tubes, convoluted corriders, or variations of 
these (1) 
1. Pileus fleshy or gelatinous, (decaying rapidly) (2) 
1. I J ileus leathery, corky or woody, (a few may be tough-fleshy) . . (6) 
2. Stem lateral : Fistulina. 
2. Stem central: (3) 
3. Stem with an annulus: (usually inch under Boletus ) . . . .Boletopsis. 
3. Stem without volva or annulus : (4) 
4. Pileus and stem squarrose-scaly : StroMlomyces. 
4. Not squarrose-scaly: (5) 
5. Layer of tubes separating readily from hymenopliore: Boletus. 
5. Layer of tubes not separating easily ; tubes radiating from stem : 
Boletinus. 
0. Hymenium gelatinous: Gloeoporus. 
G. Hymenium not gelatinous (7) 
7. Tubes in several layers; perennial. Forties. 
7. Tubes not stratified: annual (8) 
8. Tubes longer in the radial direction. Favolus. 
8. Tubes rather regular: (9) 
