Part 1, 1907] POLYPORACEAE 27 
nearly glabrous, silky-shining, finely zonate near the margin, which is thin, fertile, con- 
colorous: context white, fibrous, less than 0.5 mm. thick; tubes rather long, 1.5-2 mm., 
white within, large and irregular, soon becoming irpiciform, mouths 2-3 to a mm., edges 
white or pallid, thin, dentate to lacerate: spores not examined. 
TYPE LOCALITY: Mexico. 
HasitaT: Dead wood. 
DISTRIBUTION : Known only from the type locality. 
39. Coriolus abietinus (Dicks.) Quél. Ench. Fung. 175. 1886. 
Boletus abietinus Dicks. Pl. Crypt. Brit. 3: 21. 1793. 
Boletus incarnatus Schum. Enum. Pl. Saell. 2: 391. 1803. 
Polyporus parvulus Schw. Trans. Am. Phil. Soc. II. 4: 157. 1832. (Type from Pennsylvania. ) 
? Polyporus pargamenus Fries, Epicr. Myc. 480. 1838. (Type from arctic North America.) 
Polystictus pusio Sacc, & Cub. in Sacc, Syll. Fung. 6: 265. 1888. 
Pileus effused-reflexed, the reflexed portion thin, tough, flexible to nearly rigid, 
0.5-1.5 KX 1-3 X 0.05-0.1 cm.; surface obsoletely zonate, grayish-white, villose; margin thin, 
undulate to lobed, fimbriate with age, incurved on drying: context very thin, white, mem- 
branous; tubes uneven, irregular, soon becoming irpiciform, mouths variable in size, 2-3 
toa mm., edges thin, lacerate-dentate, unequal, pallid or violet, fading with age, some- 
what flesh-tinted in dried specimens: spores globose, smooth, hyaline, 4.5-5.54; hyphae 
7 #3; cystidia none. 
TYPE LOCALITY: England. 
Hasitat: Decaying coniferous trunks. 
DISTRIBUTION : Northern hemisphere. 
ILLUSTRATION: Dicks. loc. cit. £1. 9, f. 9. 
ExsiccaTi: Shear, N. Y. Fungi 3077 Thiim. Fungi Austr. 6, 706; Ellis, N. Am. Fungi 8; 
Karst. Finl. Fungi Qi, 248 ; Rav. Fungi "Car. 1: 22, Rab.-Wint. Fungi Eur. 2637, D255 5 Sydow, 
Myc. Mar. 723, 31/4 ; Krieger, Fungi Sax. 65, 1205 ; Ellis & Ev. Fungi Columb. 303 ; Underw. & 
Cook, Ilust. Fungi 16; Rav. Fungi Am. 422 ; Jacz. Fungi Rossiae 274; Sacc. Myc, Ven. 1409 ; 
Allesch. & Schn. Fungi Bavar. 235, Linhart, Fungi Hung. 445. 
40. Coriolus prolificans (Fries) Murrill. 
Polyporus prolificans Fries, Epicr. Myc. 443. 1838. 
Polyporus laceratus Berk. Ann. Mag. Nat. Hist. 3: 392. 1839. (Type from Louisiana.) 
Polyporus Flabellum Mont. Pl. Cell. Cuba 388. £7. 15. 7.2. 1842. (Type from Cuba.) 
Polyporus Menandianus Mont. Ann. Sci. Nat. II. 20: 362. 1843. (Type from New York.) 
Polyporus subflavus Lév. Ann. Sci. Nat. III. 5: 300. 1846. (Type from New York.) 
Polyporus xalapensis Berk. Jour. Bot. & Kew Misc. 1: 103. 1849. (Type from Mexico.) 
Polyporus Sartwellii Berk. & Curt. Grevillea 1: 51. 1872. (Type from New York.) 
Polyporus tlicincola Berk. & Curt. Grevillea 1: 52. 1872. (Type from Alabama.) 
Polyporus pseudopargamenus Thiim. Myc. Univ. zo. 1102. 1878. (Type from New York.) 
Pileus exceedingly variable, sessile or affixed by a short tubercle, dimidiate to flabelli- 
form, broadly or narrowly attached, 2-5 2-6 0.1-0.3 cm.; surface finely villose-tomen- 
tose, smooth, white or slightly yellowish, marked with a few narrow indistinct latericeous 
or bay zones; margin thin, sterile, entire to lobed: context very thin, white, fibrous ; tubes 
1-3 mm. long, white to discolored within, mouths angular, somewhat irregular, 3-4 to a 
mm., usually becoming irpiciform at an early stage, edges acute, dentate, becoming lacerate, 
white to yellowish or umbrinous: spores smooth, hyaline. 
TYPE LOCALITY: Mexico. 
HABITAT: Dead deciduous trunks. 
DISTRIBUTION: Canada to Florida and west to Wisconsin and Mexico; also in Europe. 
EXxXsICccaTI: Ellis, N. Am. Fungi 372; Shear, N. Y. Fungi JS; Rab. -Wint. Fungi Eur. 2231; 
Thiim. Myc. Univ. 1102, 1304 ; Ellis & Ev. N. Am. Fungi 1934; Rav. Fungi Am. 108, 423 ; Ellis & 
Ev. Fungi Columb. 302 ': Rav, Fungi Car. 1: 2. 
DOUBTFUL SPECIES 
Boletus cinerascens Schw. Schr. Nat. Ges. Leipzig 1:99, 1822. Described from North 
Carolina. Type not found. Apparently near Coriolus sericeohirsutus. 
Sistotrema Symphyton Schw. Schr. Nat. Ges. Leipzig 1: 101. 1822. Described from 
North Carolina. Apparently near C. b¢formis. 
Polyporus papyraceus Fries, Elench. Fung. 97. 1828. Described from plants collected 
by Bertero on trunks in Porto Rico. Type not found. Apparently near C. membranaceus. 
Polyporus decipiens Schw. Trans. Am. Phil. Soc. II. 4: 157. 1832. Coriolus decipiens 
