74 NORTH AMERICAN FLORA [VoLUME 9 
in length, 1-2 toa mm., teeth ferruginous, compressed, obtuse, somewhat seriate, irregular 
in size and shape, pulverulent at first: spores globose, smooth, hyaline, 6-7 #; hyphae 
pale-ferruginous, 3-4 #; cystidia none. 
TYPE LOCALITY: South Carolina. 
HABITAT: Decaying deciduous branches. 
DISTRIBUTION : Southern United States. . : 3943 : 
ExsICCATI: Rav. Fungi Am. 7/3; Rav. Fungi Car.3: 22; Rab.-Wint.-Paz, Fungi Eur. ? 
Ellis, N. Am.Fungi 7/2; Ellis & Ev. N. Am. Fungi 27/7. 
2. Cerrenella farinacea (Fries) Murrill. 
Irpex farimaceus Fries, Linnaea 5: 523. 1830. . 
Poria portoricensis Fries, Epicr. Myc. 483. 1838. (Type from Porto Rico.) : 
Hydnum trachyodon Lév, Ann. Sci. Nat. IIL. 2: 302. 1846. (Type from Bogota, Colombia. ) 
Irpex griseofuscus Mont. Syll. Crypt. 174. 1856. (Type from Guiana.) : 
Irpex coriaceus Berk. & Rav. Grevillea 1: 101. 1872. (Type from South Carolina.) 
Daedalea Burserae Pat. Jour. de Bot. 8: 341. 1889. (Type from Martinique.) 
Cerrenella coriacea Murrill, Bull. Torrey Club 32: 361. 1905. 
Pileus very thin, soft, flexible, coriaceous, entirely resupinate or effused-reflexed, the 
reflexed portion dimidiate, imbricate, laterally connate, 0-1 X 1-5 X 0.1 cm.; surface finely 
concentrically striate, tomentose, umbrinous-chestnut ; margin very thin, undulate to lobed, 
sterile: context membranous, concolorous, papery-thin ; tubes short, 1 mm. or less, irregu- 
lar, 2-3 to a mm., edges thin, fimbriate to lacerate, dentate, separated at a very young 
stage forming an irpiciform hymenium, yellowish-green to olive and finally cinereous and 
farinaceous: spores smooth, hyaline, 6-7 X 2.54; basidia hyaline, 15 K 4-5 #. 
TYPE LOCALITY: Brazil. : 
HABITAT: Decaying limbs of oak and other hardwood trees. 
DISTRIBUTION : Tropical America, and northward in the United States to Ohio and Iowa. 
Exsiccati: Rav. Fungi Am. 438, Ellis, N. Am. Fungi 1/05; Rav. Fungi Car. 3: 22. 
3. Cerrenella subcoriacea Murrill, sp. nov. 
Pileus coriaceous, rather flexible, effused-reflexed, the reflexed portion dimidiate, 
imbricate, often laterally connate, 1-2 X 2-5 < 0.3-0.7 cm.; surface somewhat zonate, finely 
tomentose to glabrous, dark chestuut-colored ; margin entire to lobed, bay, tomentose, very 
thin: context very thin, less than 1mm., chestnut-colored, soft, fibrous; tubes often reviv- 
ing, 2-4 cm. long, umbrinous-chestnut and powdery within, hymenium irregular, daeda- 
leoid to iripiciform, mouths 1-2 to a mm., edges thin, firm, glistening, chestnut-colored to 
very dark-fuliginous, soon splitting into flat, more or less pointed teeth. 
Type collected in Nicaragua, on dead wood, B. Shimek. 
DISTRIBUTION : Known only from the type locality. 
49. CORIOLOPSIS Murrill, Bull. Torrey Club 32: 358. 1905. 
Hymenophore thin, flexible or rigid, annual, epixylous, sessile, dimidiate, often largely 
resupinate ; surface light-brown to bay-black, zonate, anoderm, rarely encrusted with age, 
hairy; margin thin: context thin, coriaceous to woody, isabelline to purplish-umbrinous, 
rarely almost white; hymenium concolorous; tubes small, regular, thin-walled, entire: 
spores smooth, hyaline. 
Type species, Polyporus occidentalis Klotzsch. 
Pileus isabelline to fulvous. 
Pores inconspicuous ; pileus papery-thin, very soft and flexible. 1. C. crocaia. 
Pores conspicuous. — . 
Hymenium isabelline ; pileus usually thick and firm. 2. C. occidentalis. 
Hymenium whitish or grayish, at least until maturity; pileus thin, 1-3 
mm., flexible, often narrowly reflexed or entirely resupinate. 
Surface and hymenium whitish to isabelline. 
Surface isabelline to fulvous or whitish-cinereous, hymenium mur- 
inous to umbrinous. 
Pileus wholly or partially darker than fulvous, usually bay-brown or blackish. 
Context nae can 
Surface finely tomentose to scabrous. ori 
Surface densely clothed with long cirriform fibers. A a eee 
Context umbrinous-chestnut. ae : 
Pileus effused, narrowly reflexed. 
3. C. rigida. 
4. C. fulvocinerea. 
