(Vol. 12 

 338 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



branched paraphyses having final branches 1 ix in diameter; 

 cystidia incrusted, 20-35 X 12-15 (x, usually wholly immersed; 

 spores not found. 



Fructifications 12 cm. long and broken off at ends, 3 cm. wide. 



On fallen decaying branches of undetermined frondose species. 

 Georgia and Cuba. August and April. Probably rare. 



P. Seymouriana has general aspect suggestive of a resupinate 

 Hymenochaete or the effused stroma of an Hypoxylon. The fruc- 

 tifications are thinner than those of P. tephra, with less numerous 

 cystidia and with the much darker hymenium becoming cracked 

 like that of Hymenochaete corrugata. 



Specimens examined: 

 Georgia: Glen Ella, Tallulah Falls, A. B. Seymour, type, comm. 



by Farlow Herb., G (in Mo. Bot. Gard. Herb., 44613). 

 Cuba: C. G. Lloyd, U5 (in Mo. Bot. Gard. Herb., 55495). 



107. P. laevigata (Fr.) Massee, Linn. Soc. Bot. Jour. 25: 149. 

 Je. 1889; Karsten, Finska Vet.-Soc. Bidrag Natur och Folk 48: 

 426. O. 1889; Bourdot & Galzin, Soc. Myc. Fr. Bui. 28: 408. 

 1913; Rea, Brit. Basid. 696. 1922. 



Thelephora laevigata Fries, Elenchus Fung. 1 : 224. 1828. — 

 Corticium laevigatum Fries, Epicr. 565. 1838; Hym. Eur. 656. 

 1874; Sacc. Syll. Fung. 6: 628. 1888. — Xerocarpus Juniperi 

 Karsten, Rev. Myc. 3^: 22. 1881. — Kneiffia laevigata (Fr.) 

 Bresadola, Ann. Myc. 1 : 104. 1903. 



Fructifications effused, thin, snuff-brown, drab, or pale drab- 

 gray, adnate, small pieces separable from the bark when moist- 

 ened, becoming cracked when dry, the margin at length free; 

 in section brown, 200 tx thick, composed of very numerous, colored 

 cystidia and thin-walled, hyaline hyphae 2-4 \x m diameter; 

 cystidia colored, cylindric-clavate or fusiform, 25-50 X 5-6 \i, 

 thick-walled and rough above or perhaps somewhat incrusted, 

 very numerous in all regions and giving their color to the trama 

 as a whole; spores hyaline, even, 7-8 X 3-4 \i. 



Fructifications 23/^-12 cm. long, 3^-4 cm. broad. 



On bark of Juniperus. Canada, New York, and Europe. 

 April and September. Rare. 



This species may be recognized by its occurrence on Juniperus, 



