MURRILL : POLYPORACEAE OF NoRTH AMERICA 473 



4- 



Myc. 3=*: 17. 188 1 



Type : Boletus bcUtlimis Bull. 



Hymenophore annual, epixylous, umbonate-sessile ; surface 

 smooth, azonate, pelliculose ; context white, fleshy-tough ; hyme- 

 nium at length separating smoothly from the context, tubes white, 

 thick-walled ; spores smooth, cyHndrical, hyaline. 



Species : P. suberosus (L.) Murr, [See Bull. Torrey Club 30 ; 

 424, 425. 1903. 



5. Dendrophagus gen. nov. 



Type : Polyponts Colossus Fr. 



Hymenophore very large, but of light weight, annual, epixy- 

 lous, sessile, dimidiate, thick and pulvinate ; surface pelliculose, 

 glabrous, azonate, margin very obtuse ; context very thick, soft 

 and spongy throughout ; tubes small, dark-colored, thin-walled, 

 fragile ; spores smooth, hyaline. 



Dendrophagus Colossus (Fr.) 



Poly poms Colossus Fr. Nov. Symb. 56. 185 i. 



Described from material collected by Oersted on stumps ot 

 Cedrda odorata at Puntarena in Costa Rica as follow^s : 



*'Pileo floccoso-suberoso moUi crasso pulvinato, margine 

 tumido obiusissimo^ primitus cuticula tenella laevi vernicea sul- 

 furea tecto, eaque secedente scabroso, contextu stuppeo mollissimo 

 alutaceo-pallescente, poris minutis elongatis molUbus, intus fusce- 

 scentibus." 



" Portentum mirabile et magnitudine et ponderis levitate. 

 Fungus dimidiatus, sessilis, reniformis sed undulatus, crassimus 

 (3-4 unc.) etiam in margine obtusissimo, contextu stuppeo-fomen- 

 tario (nullo modo fibroso ut in Spongiosis), mollfssima, alutaceo- 

 pallida 1. isabellina. Pileus extus quoque molh'ssimus, ut digito 

 press us foveas relinquat persistentes, undulatus, more P. bctulini 

 tectus cuticula laevi vernicea arete adnata citrina, et in hoc statu 

 pileus politus apparet, at cuticula secedente scabrosus evadit et de- 

 colorans. Pori valde longi et densi, absque trama discolor! et a 

 pileo separabiles, ore minuto, exsiccati nigrescentes, intus fusces- 

 centes; in vivo enim admodum molles et hinc in exsiccatis con- 

 fluunt in callum nigricantem absque poris extus conspicuis. ^ Ad 

 truncos ins. San Jan Indiae occid. lectus est fungus aeque gigan- 

 teus, textura eadem, modo obscurior et pondere gravior ; sed pileus 



epelliculosus, scabrosus, nigrescens. Pro forma prions exolcta 



'Co/' 



hab"~ " 



