92 Thirty-eighth IIeport on the State Museum. 



phoid branching strings of mycelium or forming a somewhat reticulate 

 fimbriate membrane ; pores minute, subrotund, equal, whitish inclining 

 to cream color. 



Under side of prostrate trunks of maple, forming extensive patches 

 on the wood and bark. Osceola. Aug. 



By its rhizomorphoid mycelium this species is related to P.Vaillantii, 

 but the pores are smaller and not collected in heaps as in that species. 

 By reason of its tenacious substance it is readily separable even from an 

 irregular matrix 



Polyporus (Physisporus) ornatus, n. sp. 



Effused, I to 2 lines thick, somewhat tenacious, adnate or insep- 

 arable from the matrix, white, the surface slightly undulate or uneven, 

 the margin definite, studded with drops of moisture when fresh, spotted 

 with dot-like depressions when dry ; pores subrotund, minute, unequal, 

 often oblique. 



Decaying prostrate trunks of deciduous trees. Osceola. Aug. 



This species is at once distinguished by its adnate subiculum and its 

 peculiarly spotted margin. The spots are watery white in the fresh state 

 and each one is covered by a drop of moisture. In the dried plant the 

 place previously occupied by the drop of moisture becomes a small 

 depression in the subiculum. 



Polyporus (Physisporus) odorus, n. sp. 



Effused, 2 to 3 lines thick, even, firm but brittle, moist, separable 

 from the matrix, white, sometimes stained with reddish-yellow on 

 the abrupt, rather thick, slightly fimbriate margin ; pores very minute, 

 rather long, equal, entire, white, arising from a thin but distinct subic- 

 ulum ; odor strong, disagreeable. 



Under surface of decorticated prostrate trunks of spruce. Osceola. 

 Aug. 



It forms patches several inches broad and sometimes more than a foot 

 long. It is distinguished from P. vulgaris by being separable from the 

 matrix, moist, having longer pores and a strong odor. From the next 

 following species it may be known by its smaller pores, more brittle 

 texture and its different odor. 



Polyporus (Physisporus) subacidus, n. sp. 



Effused, separable from the matrix, tenacious, flexible, uneven, deter- 

 minate, the margin downy, narrow, pure white ; pores small, subrotund, 

 I to 3 lines long, often oblique, whitish inclining to dingy-yellowish 

 pale tan color or dull cream color, the dissepiments thin, more or less 

 dentate ; odor strong, subacid. 



Prostrate trunks and decaying wood of various trees, hemlock, spruce, 

 birch, etc. Osceola. July. 



This species is not rare, but it has probably been confused with its 

 allies. It forms extensive patches, sometimes several feet in length. It 

 adheres somewhat closely to the matrix, but its texture is so tough that 

 it is generally easy to strip it from its supporting substance. It is ap- 

 parently closely related to P. mcchUa-panis, but the description of that 



