146 THE WEST VIRGINIA FLORA 



S. ACERINUM Pers. 



On living tree trunks, March 7, 1893 (Nuttall, 858). 



HYMENOCHAETE Lev. 

 H. RUBIGINOSA (Schr.) Lev. 



On dead log, March, 1893 (Nuttall, 911). On Robinia 

 pseudacacia, Monongalia : near Morgantown; on Quercus 

 alba, Preston: near Terra Alta (Sheldon). 

 H. T^BACINA (Sow.) Lev. 



On dead twigs, March, 1893 (Nuttall, 910) ; on Acer, 

 Pocahontas : Cranberry Glades (Sheldon}. 

 H. CORRUGATA (Fr.) Lev. 



On decorticated limb Betula lenta, Grant Go., near Bay- 

 ard (Millspaugh) . On Magnolia Fraseri, Feb. 8, 1894. 

 Setae 38 x 7.5 /* (Nuttall, 1364). ' 

 H. UNICOLOR B. & C. ? 



On Betula lenta, on dead Kahnia latifolia? 'July I, 1893 

 (Nuttall, nil, 96). 



CORTICIUM Fr. 

 C. SALICINUM Fr. 



On dead Saliv nigra, March- 15, 1894 (Nuttall, 1401). 

 C. OAKESII B. & C. 



On living Ostrya Vir^inica, March 21, 1893 (Nuttall, 



877). 



C. GLOBIFERUM E. & E. 



Underside of dead log in deep laurel thicket, Short Creek, 

 .March 25, 1893 (Nuttall, 940). 



C. ARACHNOIDEUM Berk'. 



On dead damp twigs in dense pile, Jan. 18, 1894. Diffused 

 for 30 x 8 cm. Spores 4 to 5 x 2 to 3 p. The species when 

 fresh has a wrinkled or crusted appearance looking very like 

 a Merulius, but soon becomes flat and plane (Nuttall, 1344, 



303)- 

 C. RADIOSUM Fr. 



On dead trunk, partly beneath loose bark, Short Creek ; 

 May 18, 1893 (Nuttall, 965). 

 C. LEVE.Pers. 



On Hamamelis Virginica, Dec. 20, 1894 (Nuttall, 1500). 

 C. ALBO-FLAVESCENS E. & E., Field Mus. Bot, 1:170 (1896). 



TYPE, HABITAT : On bark of dead Tsuga Canadensis, Feb. 

 24, 1894 (Nuttall, discov. 1394). 



At first. orbicular, subpezizoid, i to 2 mm. diameter, be- 

 coming more irregular in shape and i cm. or more diameter, 

 lower stratum milk-white, consisting of loosely interwoven, 

 branching threads, and extending out beyond the pale-oliva- 

 ceous or yellowish, membranaceous hymenium so as to form 



