70 SOME SINGAPOEE BOLETINAE. 



H. Pileus umber to chocolate 

 brown, more or less sooty 

 mealy centrally; hymenium 

 cream colored, often with a 

 slight yellowish tint, its sur- 

 face next stipe very slightly 

 sinuate or nearly adnate; 

 stipe umber brown, white at 

 top and bottom; pileus 2.5 — 

 3.5 cm. in diameter, stipe 

 5 — 8 mm. x 4.5 — 5.5 cm. ; 

 spores fusiform, light 

 brown, 12 — 14 x 4 microm. 

 (No. 4995). 



Boletus tristis, sp. nov. 



HH. Pileus deep sooty-velvety 

 throughout ; hymenium 

 pale yellow, its surface 

 next stipe distinctly but 

 narrowly sinuate ; stipe 

 reddish brown, base wdiite; 

 pileus 5.5 cm. in diameter; 

 stipe 9 — 10 mm. x 7 cm. ; 

 pores very small and nearly 

 terete; spores elliptic-cunei- 

 form, yellowish brown, 12 

 x 6 microm. (No. 5005). 

 Boletus phaeocephalus, sp. nov. 



GG. Flesh cream colored to .brownish, 

 blackening on exposure; pileus 

 sooty and sooty-mealy; hyme- 

 nium pale bay; stipe sooty; 

 pileus 4.75 cm. in diameter; 

 stipe 7 — 10 x 6 cm.; spores fusi- 

 form, pale, 10 — 12 x 3 — 4 mi- 

 crom.; cystidea abundant, pale, 

 30 x 12 microm. (No. 4996). 

 Boletus nigricans, sp. nov. 



FF. Pileus not sooty-mealy, or sooty-vel- 

 vety, color paler; flesh white, not 

 changing. 



G. Stipe finely or coarsely serobi- 

 culate, at least in part. 

 H. Stipe finely scrobiculate 

 above; surface of pileus 

 usually minutely reticulate- 

 ly broken; pileus dark um- 

 ber-brown; hymenium pale 



Jour. Straits Branch 



