309 
tenuior. Tubult obscuriores, tenuissime tunicati, 2-5-7: 
longi. Pori subhexagoni, 1-2 mm. diametro, sicco tice 
a. Basidiospores. b. Conidia from root of coffee tree. x 850. 
sordide brunnei. Stipes peoanniad te 5-8 cm. longus, basi 
2-2°5 em. crassus, sursum incrassatus. Sporae copiosae, strami- 
neae, aculeatae, 5-6 x 4 p (cum poe is). 
Tropicat Arrica. Uganda; the roots of a dead Coffee tree, 
Kampala, W. Small 327 (1915) 
The fungus ba to the section _Sponoinsw of Polyporus, 
and is near to P. rufescens, from which it is distinguished by its 
larger size and aculeate spores. It is cates suspicion of having 
caused the death of the tree. The fructifications were found 
surrounding the collar of the plant, the roots of which were 
encrusted with a layer of white mycelium mixed with sand. On 
this crust of mycelium there occur patches of a conidial fructifi- 
cation which may be connected with the Polyporus. The coni- 
diat layer is chestnut-brown, pulverulent. The conidia are 
stalked, subglobose, sometimes with a hyaline apiculus at the 
apex, coarsely warted, the warts arranged more or less in lines 
running from apex to base of the spore, 8-10 » in diameter. 
hrerngces roe yaa ae et Wakef. 
tusque, 10-14 cm. diametro. Contextus albidus vel alutaceus, 
fibrosus, lineis atris paucis percursus. Tubuli lignicolores, 
contextu dbscuriores, 2-3-5 cm. longi. Port minuti, vegeto 
purpurei, sicco grisei, erasse tunicati. Stipes centralis, a apo 
vegeto laccatus, sicco pruinosus, olivaceo-brunneus, 12 
longus, 1°5 cm. diametro. Sporae sag aug laeves vel minu- 
tissime punctatae, pallide brunneae, 10 » 
Tropica Arrica. Uganda: Bumpenge Forest; on the 
ground beneath a dead tree, 7. D. Maitland 24a (191! 5). 
A very yes ape ge marked by the infundibuliform pileus 
and the hard smooth crust, which when fresh is distinctly 
laccate, but aise ge becomes dull and greyish or olive-brown. 
Most of the sporophores have edg closely adpressed to the trunk 
and therefore are not symmetri 
