[Vol. 2 



708 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Specimens examined: Cooke, Fung. Brit. 511 1 . — Thuem. 

 Myc. Univ. 709 1 .— Mo. Bot. Gard. Herb. 43719 (Missouri).— 

 Overholts Herb. 101 (Ohio), 526, 625 (Missouri). 



4. Polyporus delectans Peck. Plate 24, fig. 14b. 



Pileus soft and watery when fresh, 3-15 X 5-20 X 1-5-5 

 cm., white, yellowish, or grayish, glabrous to finely tomentose; 

 context white, often with a soft upper layer and a more firm 

 lower layer, firm when dry, 0.5-2 cm. thick; tubes 0.5-1.5 cm. 



mouths 



2 to a mm.; 



spores ellipsoid to subglobose, often uninucleate, hyaline, 

 smooth, 4-5 X 5-6 ii ; cystidia none. 



Growing from wounds of living trees and on old logs. 



Illustrations: Jour. Cine. Soc. Nat. Hist. 8: pi. 1. 



Specimens examined: Overholts Herb. 145, 519, 250, 415, 

 659, 93, 258, 255 (all from Ohio and Missouri). 



5. Polyporus caesius Schrad. ex Fries. 



Pileus more or less triangular in outline, rather soft and 

 watery when fresh, 1-5 X 1-4 X 0.5-2 cm., white or grayish, 

 rarely bluish gray, villous-pubescent or strigose; context 

 white, 3-10 mm. thick ; tubes 3-5 mm. long, white or grayish 

 blue, large, unequal, averaging 1-3 to a mm., the dissepiments 

 thin, torn and lacerated; spores cylindric or allantoid, smooth, 

 hyaline, 3-4 X 0.7-1.5 n ; cystidia none. 



On dead wood of deciduous trees. 



Illustrations : Sow. Col. Fig. Eng. Fung. pi. 226 (as Boletus 

 albidus). — Gill. Champ. Fr. pi. 458. 



Specimens examined: Krieg. Fung. Sax. 1913.— Mo. Bot. 

 Gard. Herb. 43650 (Missouri).— Burt Herb, (collections from 

 Canada and New York).— Overholts Herb. 627 (Missouri), 

 2271 (New York). 



1 These specimens or sections of specimens are not well preserved. They 

 contain no spores, and while the general appearance, i. e., shape of pileus, size 

 of pores, length of tuhes in comparison with thickness of context, etc., are very 

 much the same, the context appears to he more woody and zonate than in our 

 specimens. Ellis N. Am. Fung. 1103 is referred to P. spumeus Fries. It is the 

 same as distributed by Cooke, Fung. Brit. 603, under the name /'. spumosus Fries. 

 There is no such species listed by Saccardo. Lloyd (Letter No. 52, p. 25) refers 

 the Ellis specimen to Fomes gcotropus Cooke. 



