138 Hymenomycetw, Polyporaceae, Bolfitus. 



sordide ligneo-pallesceiite, soepius longitudiualiter striato, hinc inde 

 grosse irregulariter(|ue albo-PMuamuloso, basri volva parvula obco- 

 nica, 1-1'/, ciu. lata et alta, alba rigido-fragili late irregulariter- 

 que disrupta cincto; lamellis horizontaliter radiantibus, confertis- 

 sirais, linearibus, 1-1'/, cm. Jongis, 3-4: mm. latis, utrinque atte- 

 nuatis, primo membraDaceis, pallide albescentibus, planis, mox are- 

 scentibus, rigidulis, crispulis, aterrimis, IVagillimiB : «porie ollipsoi- 

 dejs, levibus, atris, siibopacis, 14-20 %« 7-10 



Hab. in pratis sabiiiosis aridis et. in. alveo tluminis Guachipas, 

 pluribus locis in Argentina. — /1/. Candollei Fr. peraffinis et fa- 

 ciie. ejusdem variehas tantum. 



Fam. 2. Polyporaceae Fr. 



BOLETUS DilJ. — Syll. VI p. % IX p. 150, XI p. 79, XIV p. 164 



V BoletUS amabiiis Peck, New Sp. fung. in Bull. Torr. Cl. 1900, 450 

 p. 611. — Pileo carnoso, convexo, glabro, rubescenti-fulvo; carne 

 pallida; tubulis curtis, decurrentibus usque ad annulum, flavis, ore 

 angulosis; stipite aequali v. doorsum tenuato, solido, pileo palli- 

 diori, sujjra annulum obsoletum reticulato; sporis .... 



Hab. in silvis densis abietinis, Colorado A.mer. bor, (Bar- 

 THOLGMEw). — Pileus 5-] 8 cm. lat.; stipes 2,5-5 cm. long., 8-16 

 mni. cr. — Ad I-lolcfiymm vergit. 



2. Boletus leptocephalus Peck, Buil. Torr, Bot. Cl. 1898, p. 371.— 451 

 Pileo tenui. late «'onvexo v. subplano, sicco, rainute rinnTSO impri- 

 mis prope inarginem, dilnte hiteo-i^runneo, interdum rubesceuti- 

 brunneo tinoto; carne albo-tlavida, sapore primitus miti, dein sub- 

 acri; stipite subsequali, a])ice iiicrassato, solido, glabro v, leniter 

 pruinoso-farinaoeo, saperne reticnlato, piieo concolore, intus albo, 

 basi mycelio albo vestito; tubulis subventricosis, circa stipitem de- 

 pressis, subJiberip, rogieo-olivaceis, ore minuto subrotundo; sporis 

 olivaceo-viriduli.»;, fusiformibus, IS'/,,-^?'/^ ^5-6. 



Hah. ad terram in silvisj Auburn, Alabama Amer. bor. ;Earle). 

 — Pileus 10-12,5 cm. latus; stipes 10-12,5 om. longus. 1,2-1,6 

 om. crassua. 



3. BoictUS nebulosus Peck, 51 Rep. State N. York 1898, p. 292. — 452 

 Piieo convexo, sicco, obscure brunneo v. fumoso-brunneo ; carne 

 alba immutabili: tubulis convexis, circa stipitem depressis, palli- 

 dis V. brunneolis, taCtu purpurascenti-brunneis, ore minuto ro- 



I 



