80 NORTH AMERICAN FLORA [VoLuME 9 
times zonate, very conspicuously ornamented with long intricately-branched hairs; margin 
thin, sterile, concolorous, somewhat inflexed on drying : context light-brown, meinbranous 
below, very loosely fibrous and darker above, the entire plant, with the exception of the 
tubes and the very thin layer to which they are attached, being composed of the loose 
branched fibers mentioned above ; tubes short, 1-3 mim. long, avellaneous within, months 
angular, often irregular and sometimes daedaleoid, about 0.5 mm. broad, edges thin, entire, 
avellaneous, soon becoming lacerate or irpiciform. 
TYPE LOCALITY: Guiana. 
HapiTaT: Dead wood. . 2 : 
DISTRIBUTION: Central America; Cuba; Jamaica; also in South America. 
52. HAPALOPILUS Karst. Rev. Myc. 3°: 18. 1881. 
Hymenophore annual, rarely perennial, epixylous, sessile, dimidiate, simple or imbri- 
cate ; surface anoderm, rarely pelliculose, zonate or azonate, usually brown and glabrous: 
context brown, leathery or corky, tough or rarely friable when dry; hymenium usually 
differently colored, tubes small, thin-walled: spores small, usually ovoid, hyaline. 
Type species, Hapalopilus nidulans (Fries) Karst. 
Hymenium concolorous; pileus smooth, entirely devoid of zones or furrows ; 
context soft and friable, spores 2.5 X 3.5m. : 
Hymenium differently colored; pileus rarely smooth ; context rigid or corky, 
not friable. 
Hymenium lilac-colored, tubes 1 cm. or more in length; pileus concen- 
trically sulcate. 
Hymenium dark-brown, tubes less than 0.5 em. in length; pileus smooth 
or zonate. 2 
Context rigid; pileus azonate or with fewand indefinite markings. 3. H. gilvus. 
Context flexible when sporophore is expanded ; pileus plainly and defi- ; 
nitely multizonate. 4. HT. licnotdes. 
1. A. rutilans. 
2. H. sublilacinus. 
1. Hapalopilus rutilans (Pers.) Murrill, Bull. Torrey 
Club 31: 416. 1904. 
Boleteus suhyosus Bull. Herb. Fr, 11: 354. 1791. Not B. suberosus I, 1753. 
Boletus rutilans Pers. Ic. Descr. Fung. 18. 1798. . 
Polyporus nidulans Fries, Syst. Myc. 1: 362. 1821. (Type from Sweden.) 
Polyporus rutilans Fries, Syst. Myc. : 363. 1821. 
Polyporus pallido-cervinus Schw. Trans, Am. Phil. Soc. II. 4; 156, 1832. (Type from Pennsyl- 
vania.) 
Hapalopilus nidulans Karst. Rev. Myc. 39: 18. 1881. 
Inonotus nidulans Karst. Fin]. Basidsv. 332. 1889. 
Pileus thick, convex above and below, very soft, fleshy, dimidiate, usually broadly 
attached, more or less imbricate at times, 2-4 X 3.5-7 & 0.5-1.5 cm.; surface smooth, ano- 
derm, azonate, finely villose to glabrous, ochraceous-isabelline to bay-brown; margin 
rather thick, entire or undulate, becoming reddish-brown when bruised: context spongy, 
friable when dry, ochraceous-isabelline, homogeneous, 3-7 mm. thick; tubes rather long, 
slender, isabelline to pale-fulvous, 3-6 mm. long, mouths angular, averaging 3 to a mm., 
somewhat irregular with age, edges isabelline, whitish when young, thin, very fragile, 
subentire: spores ellipsoid or globose, smooth, hyaline, 3 & 2.5 u. 
TYPE LOCALITY: Europe. 
HABITAT : Dead wood of deciduous trees. 
DISTRIBUTION : Temperate North America ; also in Hurope. ; 
ILLUSTRATIONS: Bull. Herb. Fr. p/. 482 ; Pers. Ic. Descr. Fung. pl. 6, f. 3. 
2. Hapalopilus sublilacinus (Ellis & Ev.) Murrill, Bull. Torrey 
Club 31: 417. 1906. 
Mucronoporus sublilacinus Ellis & Ev. Bull. Torrey Club 27: 50. 1900. 
Pileus applanate, dimidiate, 6-7 X 9-10 X 1-2 cm.; surface concentrically striate, zon- 
ate, cinereous-gray to avellaneous-fulvous ; margin acute, entire: context corky, zonate, 
3-5 mm. thick, bright cinnamon-yellow to pale-fulvous; tubes long, slender, pale-umbri- 
nous within, 5-15 mm., mouths minute, circular, regular, slightly uneven, 5 to a mm., 
