THE.POLYPG'RACEAE OF WISCONSIN. 35 



The species is very common in the southern, eastern and western 

 parts of the state. Specimens were also found in Oneida, Forest and 

 Ashland Counties. The species grows most abundantly on dead wil- 

 low, but is also found on living willow, dead oak and poplar. The upper 

 surface of the pilei is always nicely horizontal no matter in what posi- 

 tion the wood is on which they grow. Sometimes they are clustered 

 but usually each plant grows separately. 



The largest specimen found measures about 14 cm. in width, 8 cm. 

 in length and nearly 3 cm. thick behind. Most specimens, however, 

 are smaller. 



The hymenium of a growing specimen turns to a dull brick-red when 

 wounded or bruised. 



Syn. : Daedalea confragosa (Bolt.) Fries, 3, plate 160. 



Boletus labyrinthiformis Bulliard; 7, plate 491, fig. 1. 

 Agaricus confragosus (Bolt.) Murrill; 19, vol. 32, p. 86. 



Daedalea albida Fries; Obs., I, p. 107. 



Pileus corky to leathery, smooth, flat, zoneless, milk-white, with 

 delicate tomentum appressed silky smooth, pores entire and of the 

 same color. 



Very well developed specimens of this fungus were found at Cran- 

 don and were identified by Bresadola, who puts them here rather than 

 in the genus Lenzites. These specimens are certainly typically daeda- 

 lioid. 



Daedalea obtusa (Berkeley) (Plate II, fig. 11). 



Pileus thin, pulvinate, fleshy, spongy, soft, tomentose, white; mar- 

 gin obtuse; pores unequal, wide, irregular, subgyrose, becoming brown 

 when dry. 



This species was placed under the genus Polyporus by Berkeley but 

 is here placed with Daedalea because of the large labyrinthine pores 

 and because the substance of the pileus passes unchanged into the 

 trama. 



Peck, to whom a few specimens were sent, writes: "It seems to me 

 a better Daedalea or Trametes than Polyporus." 



Macbride (15, p. 22) says: "Perhaps no one at first sight would 

 consider a specimen a Polyporus at all; it looks more like a Daedalea 

 perhaps. The pores are very large, irregular, almost labyrinthine 

 and very long Furthermore the hymenophore descends 



