48 NORTH AMERICAN FLORA [VorumME 9 
Surface minutely checkered. 8. A. ee 
Surface not checkered. 9. H. fragilis. 
Surface of pileus distinctly tomentose. eh eat 
Context thin, translucent. 10. H. reniformts. 
Context thick, opaque. 
Surface tessellate ; stipe distinct. i. A. ee 
Surface not tessellate ; stipe a mere tubercle. 12. H. caperatia. 
Pileus purple or brown. . 
Pileus purple or purplish-brown ; stipe lateral or excentric. 
Pileus subcircular; stipe excentric, tubes 2.5 mm. long. 13. H. subpurpurascens. 
Pileus spatulate; stipe lateral, tubes 1.5 mm. long. 14. A. purpurascens. 
Pileus brown ; stipe distinctly central. : . 
Margin entire. 15, HY. portoricensts. 
Margin ciliate. 16. H. hondurensis. 
Tubes equally hexagonal. : 
Pileus re. J 17. H. induraia, 
Pileus yellow or brown. 
Tubes merulioid. 18. HY. brunneola. 
Tubes of normal length. 19. H. cucullata. 
1. Hexagona alveolaris (DC.) Murrill, Bull. Torrey 
Club 31: 327. 1904. 
Merulius alveolaris DC. Fl. Fr. 6: 43. 1815. 
Hexagona Mori Poliini, Pl. Nov. 35. 1816. (Type from Europe.) 
Cantharellus alveolaris Fries, Syst. Myc 1: 322. 1821. 
Boletus arcularius Schw. Schr. Nat. Ges. Leipzig 1: 95. 1822. 
Favolus canadensis Klotesch, Linnaea 7: 197. 1832. (Type from Canada.) 
? Favolus Boucheanus Klotesch, Linnaea 8: 316. pl. 5.7.2. 1833. (Type from Europe.) 
Favolus europaeus Fries, Epicr. Myc. 498. 1838. (Type from Europe.) 
Polyporus Boucheanus peponinus Berk. & Curt. Ann. Mag. Nat. Hist. II. 12: 432. 1853. (Type 
from South Carolina.) . 
Favolus ohiensis Berk. & Mont.; Mont. Syll. Crypt. 171. 1856. (Type from Ohio.) ; 
Favolus alveolaris Quél. Ench. Fung. 185. 1886.—Fairman, Proc. Rochester Acad. Sci. 2: 162. 
1895. 
Pileus reniform. to circular, convex-plane, depressed behind, 3-4 X 5-7 X 0.2-0.5 cm.; 
surface at first fulvous, strigose-squamose, at length pallid and almost glabrous ; margin at 
first thin, entire, incurved, becoming thicker and undulate or lobed: context white, 
opaque, 1-2 mm. thick ; tubes decurrent, white to pallid, 24 mm. long, mouths 1-1.5 x 2-3 
mm., edges thin, rigid, dentate: spores ellipsoidal, smooth, hyaline, 10-14 444.54: 
stipe usually a lateral tubercle, at times excentric or central, varying in length. 
TYPE LOCALITY: Southern France. 
HaszitatT: Fallen branches and other forms of dead deciduous wood. 
DISTRIBUTION : North America; also in Europe. 
ILLUSTRATION: Pollini, loc. cit. pl. 2, 3. 
ExsiccaTi: Underw. & Cook, Illust. Fungi 77; Ellis & Ev. N. Am. Fungi 604. 
2. Hexagona striatula (Ellis & Ev.) Murrill. 
Favolus striatulus Ellis & Ev. Am. Nat. 31: 339. 1897. 
Hexagona micropora Murrill, Bull. Torrey Club 31: 328. 1904. (Type from Bar Harbor, Maine.) 
Pileus flabelliform to reniform or rarely circular, convex, usually umbilicate or de- 
pressed behind, 2-4 « 2.5 & 0.2-0.4 cm.; surface smooth, glabrous, straw-colored to cream- 
colored; margin acute, undulate or slightly lobed, rarely reflexed, irregularly denticulate, 
dark-brown, as if scorched: context white, 1-2 mm. thick; tubes decurrent, ochraceous, 
1-2 mm. long, mouths 4-6-angled, 0.3-0.5 x 0.6-1 mm., edges rather firm, beset with 
small, sharp teeth: spores ellipsoidal, smooth, hyaline, 3 X94: stipe lateral to excentric, 
rarely central, slightly enlarged below, concolorous, minutely tomentose to subglabrous, 
1-7 mm. long, 3-5 mm. thick. 
TYPE LOCALITY: Mt. Cuba, Delaware, on dead branches in woods. 
HasitaT: Dead trunks and fallen sticks of birch, beech and other deciduous trees. 
DISTRIBUTION : Canada and the Northern United States south to Delaware and west to Wis- 
consin,. 
3. Hexagona princeps (Berk. & Curt.) Murrill, Bull. Torrey 
Club 31: 329. 1904. 
Favolus princeps Berk, & Curt. Jour. Linn. Soc. 10: 321. 1868. 
Pileus reniform, convex, 9X 6 X 0.4-0.6 cm.; surface fulvous, finely tomentose, smooth; 
margin thin, entire or undulate, inflexed when dry: context fleshy-tough, white, opaque ; 
