354 
The Ohio Naturalist. 
LVol. XI, No. 8, 
1. Hydnoporia fuscescens (Schw.) Murrill, N. Am. Flora 9 :3. 
1907. 
Sistotrema fuscescens Schw. 
Generally known as Irpex fuscescens Schw. and I. cin- 
namomeus Fr. This species is wholly resupinate, with a 
narrow, sterile border. The tubes are at first very short 
but soon become elongated and irpiciform. The color is a 
dark yellowish brown. Rather common on dead branches 
of oak and sugar trees, over the state. 
2. Fuscoporia ferruginosa (Schrad.) Murrill, N. Am. Flora 
9 : 5. 1907. 
Boletus ferruginosus Schrad. 
Known as Poria ferruginosa (Schrad.) Fr. On dead decid- 
uous wood. Not common. 
3. Fomitiporia obliquiformis Murrill, N. Am. Flora 9 : 9. 1907. 
Collected near Cincinnati on hardwood logs by Morgan 
and referred to Poria obliquus Pers., a European species. 
Common. 
4. Fomitiporella inermis (Ellis & Ev.) Murrill, N. Am. Flora 
9 : 13. 1907. 
Poria inermis Ellis & Ev. 
On deciduous wood. Not common. 
5. Melanoporia nigra (Berk.) Murrill, N. Am. Flora 9 : 15. 1907. 
Polyporus niger Berk. 
Characterized by a black hymenium. On oak wood. 
Probably rare. 
6. Irpiciporus mollis (Berk. & Curt.) Murrill, Bull. Torr. Club 
32:471. 1905. 
Irpex mollis Berk. & Curt. 
Also known as I. crassus Berk. & Curt. On dead decid- 
uous wood. Not common. 
7. Irpiciporus lacteus (Fr.) Murrill, N. Am. Flora 9 : 15. 1907. 
Sistotrema lacteum Fr. 
Commonly known as Irpex tulipifera Fr. The most 
common of all the resupinate forms. It is found on all 
sorts of dead deciduous branches, frequently with the mar- 
gin reflexed on both sides. 
Illustration: Hard, p. 448, f. 370. 
8. Poronidulus conchifer (Schw.) Murrill, Bull. Torr. Club 
31 : 426. 1904. 
Boletus conchifer Schw. 
Known as Polyporus conchifer Schw. and as P. virgineus 
Schw. This species is a very peculiar one. The young 
plant is a sterile, cup-shaped body about 1 cm. in diameter, 
varying in color from pure white to dark brown, and marked 
