May 1903] Review op Genera of Polyporaceae 
101 
Porolaschia Pat. 1898. — P. micropora Pat. (Xylopha- 
gaceae.) 
POROPTYCHE Beck. 1888. — P. Candida Beck. 
Porothelium Fr. 1818. — P. fimbriatum (Fers.). (Hyd- 
naceae?). 
Postia Karst. 1881. — P. borealis (Fr.). Name preoccu¬ 
pied. See Bjerkandera. 
Ptychogaster Corda, 1838. — Pt. albus Corda. Spurious. 
PYCNOPORUS Karst. 1881. — P. cinnabarinus (Jacq.) 
Pyreium Paul. 1793. — P. giganteum Paul. Not in the 
Polyporaceae. 
PYROPOLYPORUS Murrill. 1903. — P. igniarius (L.). 
RODWAYA H. & P. Sydow. 1901. — R. infundibuliformis 
(Cke. & Mass.). 
SARCOPORIA Karst. 1894. — S. polyspora Karst. 
Allied to Xylophagus. 
Scenidium Kze. 1893. — S. hirtum (Palis.) Kze. See 
Favolus. 
SCLERODEPSIS Cke. 1890. — S. colliculosa (Berk.). 
SCUTIGER Paul. 1793. — S. tuberosus Paul. 
Serda Adans. 1763. — Not based on a binomial. See 
Gloeophyllum. 
Serpula Gray. 1821. — S. lacrymans (Wulf.). See Xylo¬ 
phagus. 
Sesia Adans. 1763. — Not based on a binomial. See 
Gloeophyllum. 
Spongipellis Pat. 1887. — S. spumeus (Sow.). See Bjer¬ 
kandera. 
Stigmatdlemma Kalch. 1882.'—S. vincanum Kalch. See 
Porothelium. 
Striglia Adans. 1763. — Not based on a binomial. See 
Agaricus. 
Strilia Gray. 1821. — S. cinnamomea (Jacq.). See Col- 
tricia. 
THELEPORA Fr. 1847. — T. cretacea Fr. 
Tilotus Kalch. 1881. — T. lenzitiformis Kalch. Name pre¬ 
occupied. See Tomentifolium. 
TOMENTIFOLIUM nom. nov.—T. lenzitiforme (Kalch.). 
TRAMETES Fr. 1838. — T. benzoina (Wahl.). 
TRECHISPORA Karst. 1890. — T. onusta Karst. 
Tyromyces Karst. 1881. — T. chioneus (Fr.). See Bjer¬ 
kandera. 
Xanthochrous Pat. 1897. — X. tomentosus (Fr.). See 
Mucronoporus. 
Xylometron Paul. 1793. — Type indeterminate. 
