98 NORTH AMERICAN FLORA [VoLUME 9 
9, Fomes Ellisianus F. W. Anderson, Bot. Gaz. 16: 113. 1891. 
Polyporus circumstans Morgan, Jour. Cine. Soc. Nat. Hist. 18: 37. 1895. (Type from South 
Dakota.) 
Pileus dimidiate, ungulate, woody, 4-7 « 6-8 & 2-5 cm.; surface radiate-rugose, sulcate, 
light-bay or brown, becoming rimose and darker with age; margin obtuse or rounded, 
pallid, fertile: context corky, pale-ochraceous, scanty, 0.5-1 cm. thick, becoming scanty 
in the older sporophores; tubes indistinctly stratified, concolorous with the context, fragile, 
0.5-1.5 cm. long each season, mouths subcircular, 3 to a mm., edges rather thick, pruinose 
when young, becoming concolorous: spores ovoid to slightly oblong, smooth, hyaline, 
4-5 X 5-6; hyphae 5, very light-brown; cystidia none. 
TYPE LOCALITY: Teton Valley, Montana. 
HaBitaT: Living trunks and branches of Shepherdia argentea Nutt. 
DISTRIBUTION : Montana, South Dakota, Colorado, and New Mexico. 
ILLUSTRATIONS: Bot. Gaz. 16: p/. 22: Jour. Cinc. Soc. Nat. Hist. 18: pl. 1, f. 4. 
Exsiccati: F. W. Anderson, Paras. Fung. Mont. 537. 
10. Fomes ungulatus (Schaeff.) Sacc. Syll. Fung. 6: 167. 1888. ° 
Boletus wniarius Scop. Fl. Carn. ed. 2.2: 469. 1772. Not B.igniarius I, 1753. 
Boletus ungulatus Schaeff. Fung. Bavar. 4: 88. pi. 137, 138. 1774. 
Boletus fulvus Schaefl. Fung. Bavar. 4: 89. pl. 262. 1774. 
Boletus semiovatus Schaeff. Fung. Bavar. 4: 92. pl. 270. 1774. 
Boletus marginatus Pers. Obs. Myc. 2: 6. 1799. 
Boletus pinicola Sw. Sv. Vet.-Akad. Handl. 1810: 88. 1810. 
Polyporus marginatus Fries, Syst. Myc. 1: 372. 1821. 
Polyporus pinicola Fries, Syst. Myc. 1: 372. 1821. 
Fomes marginatus Gill. Champ. Fr. 1: 683. 1878. 
Fomttopsis pinicola Karst. Rev. Myc. 39: 18. 1881. 
Fomes pinicola Cooke, Greyillea 14: 17. 1885. 
Fomes ponderosus Schrenk, Bull. U. S. Dep. Agr. Pl. Ind. 36: 30. 1903. (Type from Dakota, on 
Pinus ponderosa.) 
Pileus corky to woody, ungulate, 8-15 12-40 X 6-10 cm.; surface glabrous, sulcate, 
reddish-brown to gray or black, often resinous; margin at first acute to tumid, pallid, 
becoming yellowish or reddish-chestnut: context woody, pallid, 0.5-1 em. thick; tubes 
distinctly stratified, 3-5 mm. long each season, white to isabelline, mouths circular, 3-5 to 
amm., edges obtuse, white to cream-colored: spores ovoid, smooth, hyaline, 64; hyphae 
8; cystidia none. 
TYPE LOCALITY: Bavaria. 
Hasgirat: Abundant on coniferous trees, such as hemlock and pine, and found more rarely on 
deciduous trees, such as beech, elm, maple, and birch, standing near its usual hosts. 
DISTRIBUTION : Temperate regions. 
ILLUSTRATIONS: Schaeff. Fung. Bav. J. c.; Bull. U. S. Dep. Agr. Pl. Ind. 36: p/. 20-14. 
EXSICCATI: Rab.-Wint. Fungi Eur. 3307; Thiim. Fungi Austr. 874, 817, 1106 ; Ellis & Ev. N. 
Am. Fungi 1692; Thiim. Myc. Univ. 1906; Roum. Fungi Gall. 1808, 2205 ; Linhart, Fungi Hung. 
250, 446; Romell, Fungi Scand. 1/6; Allesch. & Schn. Fungi Bavar. 138; D. Sacc. Myc. Ital. 
214; Krieger, Fungi Sax. 27; Sydow, Myc. Mar. 1203; Ellis & Ev. Fungi Columb. 2204. 
11. Fomes fraxinophilus (Peck) Sacc. Syll. Fung. 6: 172. 1888. 
Polyporus fraxinophilus Peck, Ann. Rep. N. Y¥. State Mus. 35: 136. 1882. 
Pileus woody, subtriangular, compressed-ungulate, usually decurrent, 5-10 6-12 
2-4cm.; surface white, pulverulent or finely tomentose, concentrically sulcate, becoming 
gray or black and rimose with age; margin tumid, white or yellowish, velvety to the 
touch: context corky to woody, zonate, isabelline, 0.5~-1 cm. thick; tubes evenly but 
indistinctly stratified, 2-4 mm. long each season, white when young, concolorous with the 
context in the older layers, mouths white, subcircular, 2 to a mm., edges obtuse: spores 
broadly ellipsoid, smooth, hyaline, thin-walled, 6-7 X 7-84; hyphae light yellowish-brown, 
10-12; cystidia none. 
TYPE LOCALITY: Coeymans, New York. 
HaBItTaT: Trunks of species of /raxinits. : 
DISTRIBUTION : New York to Nebraska and south to Missouri and Virginia. 
ILLUSTRATION: Bull. U. S. Dep. Agr. Pl. Ind. 32: p/. 2. 1903. 
ExsiccaTi; Ellis & Ev. N. Am. Fungi 2302. 
