1917] 



BURT THELEPHORACEAE OF NORTH AMERICA. VIII 



263 



18. C. byssoidea (Pers.) Fries, Hym. Eur. 659. 1874 (in 

 subg. Coniophora) ; Karsten, Finska Vet.-Soc. Bidrag Natur 

 och Folk 37 : 160. 1882; Sacc. Syll. Fung. 6 : 652. 1888. 



Thelephora hyssoides Persoon, Syn. Fung. 577. 1801; Fries, 

 Syst. Myc. 1 : 452. 1821. — Corticium (subg. Coniophora) hys- 

 soidemn (Pers.) Fries, Hym. Eur. 659. 1874. — Coniophorella 

 byssoidea (Pers.) Bresadola, Ann. Myc. 1:111. 1903; Sacc. 

 Syll. Fung. 17 : 183. 1905. — Peniophora byssoidea (Pers.) v. 

 Hohn. & Litsch. K. Akad. Wiss. Wien Sitzungsber. 117 : 1084. 

 1908. — Diplonema sordescens Karsten, Finl. Basidsv. 430. 

 1889. — Peniophora sordescens (Karst.) Sacc. Syll. Fung. 9 : 

 240. 1891. 



Fructification effused, dry, at first flaxy 

 and hypochnoid, at length compact at the 

 disk, drying cream-color to Naples yellow, 

 the margin flaxy ; hymenium even, tomen- 

 tose; in structure 150-350 n thick, com- 

 posed of very loosely interwoven, rigid, 

 nodose-septate hyphae 3-4 ii in diameter, 

 which give the color to the fructification; 

 cystidia slender, tapering, sharp-pointed, 

 non-incrusted hairs, frequently nodose- 

 septate, concolorous with the hyphae, 

 3-4^/^ /i in diameter, emerging up to 20-60 

 /*; spores concolorous ^vith the hyphae 

 but sometimes nearly hyaline under the 

 microscope ,even, 4-4yoX2y2-3 /x, perhaps 

 larger in spore collections. 



Fructifications ranging from 1 to 6 cm. 

 in diameter, or perhaps larger. 



On wood and objects on the ground and 

 running over the humus in pine woods. Canada to Louisiana 

 and westward to British Columbia and Oregon, also in 

 Jamaica; apparently very common in the northwest. June 

 to December. 



If one does not overlook the pale color of the small spores, 

 this species is easily recognized, for in Coniophora it is note- 

 worthy among all species of the genus by its bright color — 



Fig. 18 



C. bys3oidea. 



Hypha bearing cysti- 



dium and b as i d i a ; 



spores. X 665. 



