SPORES HYALINE. 



POLYPORUS UNDATUS (Figs. 662 and 663). Pileus white, 

 usually resupmate, or with a reflexed pileus, turning dark reddish 

 brown in drying. Pores minute, or hiascent, in an oblique position, 

 mouths cinereous when dried. Spores globose, 3-4 mic., hyaline, 

 smooth. 



This species is usually resupinate, hence is generally classed as 

 Poria. In Europe it is rarely known to develop a pileus. It is frequent 

 in United States, always as a Poria. Persoon knew it only from a dried 

 specimen that had changed color. He gave a very good figure of the 

 dried plant (Myc. Europe, t. 16, f. 3). The plant is represented in 

 most museums under the name Polyporus Broomei, having been so 

 distributed by Rabenhorst, No. 2004, also Sydow, No. 5. Bresa- 

 dola was the first to clear up the subject. He refers here as a synonym 

 Polyporus adiposus, as the plant is known in the English text books. 

 From what we could learn from the material at Kew, adiposus seems 

 to be the ^ same plant. In the United States, Polyporus undatus is a 

 frequent "Poria," forming slabs on very rotten logs. It is common 

 around Cincinnati, but we have never seen a pileate form with us. 



Compare adiposus, Broomei, cinctus. 



POLYPORUS PALLESCENS, in sense of Romell is very close to Polyporus undatus and ap- 

 pears similar to the eye. The spores 2x4 are not the same, however, and I think it is a different spe- 

 cies, but very close. 



POLYPORUS STIPTICUS. Pileus dimidiate (1^x3x4), 

 white, rufescent on margin. Surface dull, smooth, no distinct crust. 

 Flesh white, drying white and hard. Pores, at first, round, small, 

 becoming larger and irregular when old; 6-8 mm. long, 

 white, slightly rufescent in drying. Spores (Fig. 664) (W.) 

 elliptical, and slightly curved, guttulate, 1>^ x 3-4. 



We know this only from English collections, and it is 

 evidently a very rare plant. The flesh is stiptic to the 

 taste, and we are convinced it is the original of Polyporus F '9- 664 - 

 stipticus of Persoon, as to description, but surely not "passim" on 

 trunks, and not the common white plant usually called Polyporus 

 stipticus in France (cfr. albidus). We have but two collections of this 

 species from England, and one each from France and Sweden, these 

 both doubtful. 



SPECIMENS. England, E. M. Wakefield, Chas. Crossland. 



POLYPORUS CRISPELLUS. Pileus thin, white, usually largely decurrent 

 behind. Surface fibrillose, nearly smooth. Pores medium large, thin, collapsing, 

 discolored in drying. Spores 3>4 x 5-6, oblong, hyaline, smooth. 



If I correctly refer specimens received from Mr. Weir, this is close to, if not 

 the same as, Polyporus destructor of Europe. It is thinner, the spores slightly 

 longer, but it has the same discolored pores and is probably the same plant. Peck 

 states that it differs from destructor by having a zonate pileus, a feature not shown 

 in dried specimens. Mr. Weir's specimens are very thin, and curl in drying. 



SPECIMENS. Montana, James R. Weir, on pine. 

 Compare pachycheiles. 



