118 THE POLYPORACEAE OF WISCONSIN. 



Rare. Only two specimens have thus far been fonnd, one on a log 

 near Lake Mendota, and one growing from an oak stump near Oak- 

 field. The larger measured 4 cm. in width and 6 cm. in length, with a 

 thickness of about 1 cm. Both specimens are subspatulate, attached by 

 a narrow base. They were old, dry and leathery-tough when collected. 

 The colors had all changed to dark-reddish-gray. The tubes were dis- 

 tinct, reddish-brown, about 4 mm. in length and 0.5 mm. in diameter. 



The fungus is popularly known by the names Oak-tongue, Chestnut 

 tongue, Beef -tongue and Beefsteak fungus. It is edible. It can readily 

 be recognized by the free cylindrical pores. 



13. BOLETINTJS Kalchbrenner. 



"Hymenophore not even (as in Boletus) but extended in sharp ridges 

 or lamellae descending like a trama among the tubes. Tubes not easily 

 separable from the hymenophore and from each other, stem annulate, 

 spores pale yellowish/' Saccardo, vol. 6, p. 51. 



Peck (21, 2, 8, p. 75) gives the following description of this genus: 

 "Hymenium composed of broader radiating lamellae connected by 

 very numerous narrower anastomosing branches or partitions and form- 

 ing large angular pores. Tubes somewhat tenacious, not easily separ- 

 able from the hymenophore and from each other, adnate or subdecur- 

 rent, yellowish.' 7 



Boletinus pictus Peck (Plate XV, fig. 56; Plate XVI, fig. 56.) 



"Pileus convex or nearly plane, at first covered with a red fibrillose 

 tomentum which soon divides into small scales revealing the yellow col- 

 or of the pileus beneath, flesh yellow, often slowly changing to dull 

 pinkish or reddish tints where wounded ; tubes tenacious, at first pale- 

 yellow, becoming darker or dingy ochraceous with age, sometimes 

 changing to pinkish-brown where bruised, concealed in the young plant 

 by the copious whitish webby veil; stem equal or nearly so, solid, 

 slightly and somewhat evanescently annulate, clothed and colored like 

 or a little paler than the pileus, yellowish at the top ; spores ochraceous, 

 9 to 11.4 microns long, 4 to 5 microns broad. Pileus 5 to 10 cm. broad; 

 stem 4 to 9 cm. long, 6 to 13 mm. thick. Woods and mossy swamps." 

 Common in the northern part of Wisconsin in low grounds and on grav 

 elly soil. Localities: Crystal Lake, Crandon, Star Lake, Algoma, 

 Durward's Glen, Madison, Hazelhurst, etc. 



