REPORT OF THE STATE BOTANIST I917 I09 



Poria setigera Peck 



Plate 18 



51st Rep't N. Y. State Mus., p. 293. 1898 

 Original description. Effused, tough, thin, adnate, the thin sterile 

 byssine or tomentose margin whitish ; pores minute, rotund, shallow, 

 Ve to \'- line wide, smoky brown, suffused with a grayish white 

 pruinosity, the dissepiments entire, their edges and the sterile mar- 

 gin bearing smooth colored setae .003 to .005 in. long, .0005 to 

 .0006 broad. 



Bark of red maple, A c e r rub rum. Gansevoort. July. 

 This fungus forms patches by confluence several inches in extent. 

 The setae are external and do not appear to develop within the 

 pores. Therefore the species is not- a Mucronoporus. 



Notes. The type collection contains an apparently fair represen- 

 tation of this peculiar and interesting Poria, if such it be. The 

 fructifications are effused up to widths of 10 cm (plate 18, figure i). 

 The color of the hymenial surface is now drab to wood brown or 

 fuscous, and at times suffused with a grayish pruinosity. Each 

 fructification is surrounded by a sterile, cream buff or pinkish buff 

 margin i to 4 mm broad (plate 18, figure 2). This margin is 

 slightly pubescent and often with the small, brown, stiff, projecting 

 setae characteristic of the hymenial region (plate 18, figure 4). The 

 thickness of the hymenium-producing portion may be as much as 

 1.5 mm, of w^hich by far the larger part is apparently the subiculum 

 of the fungus. The tubes are less than one-half of a millimeter in 

 length. Their mouths are more or less rounded, though at times 

 slightly angular and average about 5 to a millimeter. The walls are 

 fairly thick and always entire. There is no sheen or silkiness to 

 the hymenium. 



The spores are ellipsoidal or often reniforni or boat-shaped, 

 hyaline, and measure 3 to 5 /a in length and 2 to 3 ^ in breadth (plate 

 18, figure 9). The setae are the characteristic structures of this 

 species. They resemble exactly those recently described (Torreya, 

 17:202-6. 1917) for Polyporus glomeratus Peck, by 

 the writer. They are present both embedded in the trama and in 

 the subiculum (plate 18, figure 3), and project prominently into the 

 lumen of the tubes. Peck states that they are external and appar- 

 ently do not develop within the tubes, but that is not the case, as can 

 be seen in the illustration. They often project conspicuously from 

 the bottom of the tubes, but many are entirely internal and never 



