CONTENTS. 
PAGE 
a HLLTGLCLIETONM. y.6ibis: Sak, Sahin haat as a en APR tea sets Bites cer rutin i AS iat 15 
Geographic distribution and host woods......:....-.-.--2+++e+s+e- 17 
SE METE ATLOMMOTING Woo tfoigh vg ke oss + oe ate a bates eed wore ee eevee 33 
Tie TNL, Acs oleae orice ape a a i eet A been PLA iS 38 
Preacriiion Ol the SpOropmore..  ¢..<,.. Vers cceete ceed wees eer le 38 
SRECHIICAINGESCTIND LON er tes: oh ch rite, cckcere ieee Piet hehe are tise 38 
Variation exhibited by the sporophores of Polyporus par- 
[OU A LU RS CROC Re To Se RE CERES OnE rene 39 
Relation of environmental factors to the morphologic varia- 
PLOMGOM ME SPOLOPNONES eee. erie aivie yaifec addesnevec-la cc Sebese 40 
Polyporus pargamenus Fries versus Polyporus abietinus Fries..... 41 
Srorpuolory of the BPOTOPHOTe, 22.6665. 4s. ce ova ceeds cue ees 44 
OEM OME SWONOPMORGs ice: saystae eM iuuarseraieh Aas ch «cis Suatstovel ae i 44 
Development of the sporophore: . aio: as eka a ege Les 45 
Cansistenty of the sporophore:... .: 4... 02s se.sc se csue ee! 53 
Ree CaE MNES UWE Ge Seed aha he duahy crag) caries dies; Seek Ges buaew. deo ‘53 
PINPLACS WIOUINCALLONE «ae we liata a ctsle = Sklep oicarena resis iel eas 53 
BP CORVINICTLOD MOLE) tar iak oe ns accreted ele as ces oie nica eens NG 56 
iMevelopment. OF ThE: POLERi is. .04 te 250 nay he es oo db ao as 56 
Relation of the hymenophore to the pileus................. 57 
Se Gerncren wa llac A, | ieee hte tees Berne ae Sk renee are 57 
Le BAe er pe re PRR ee de EPP shh RRR ate ie 58 
The elements of the hymenium............. Peat eens hag LS 59 
RaROVGs CMTC AEG Nes wiiiun Sia sisrd te eee oie ete or MOAT eel oat ae 61 
AGE MAEMTICL LOM OF GAG: SPOTS) yc <5 suareasugis, to's joP 3s clan die aadiep sige blk os 66 
PRA EHLUOGLN WS Pe AN oe Bhs Sis Aas tiny wis twos Sa, wa Ruste, date wedee 66 
Description Of Serminatons: 2. iia Cia wigews ond aaa let 66 
Culture media used and results obtained... ............... 69 
dtaliby Of Wesmienten SHORCR I. |. 5 a.3\ ives «.nco scutes male cae wees 70 
Characteristics of the mycelium in pure cultures............... 71 
PoC NRL TERS IEP ERC Ri oat Sabana, si ard Ake sos ahs Sy ee be oe 71 
GIES ET LOUNGE EMER Six. 0, cit tks Vhs 0 a WS oe Ae dos 73 
SSG VEE bettie man VCO UIUMIIN eae 2! are avs oh he x a! <<a anata eile es oes 76 
SG by AION (MNS TaN meer a ehtge < 2h42 Sakon sien wees «sa shea hae ac take Le ve 
Oiicligt> 3). wend ek Recast ote Rene REE ae te one a) a “a 
DAI MOS PONG R eaect Pci eck eaters ols ina RMR oh Sea wake so 79 
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