1917] 



BURT THELEPHORACEAE OF NORTH AMERICA. VIII 



247 



5. C. inflata Burt, n. sp. 

 Type : in Mo. Bot. Gard. Herb. 



Fructification effused, dry, membranaceous, separable, dry- 

 ing avellaneous, the margin mucedinous, concolorous in some 

 places, deep olive-buff in 

 others; hymenium even, pul- 

 verulent; in structure 300 /x 

 thick, with hyphae next to the 

 substratum very loosely ar- 

 ranged, colored, forming some 

 rope-like strands up to 15 n in 

 diameter; hyphae 3-6 /x in 

 diameter, here and there glo- 

 bosely inflated up to 9-12 /x in 

 diameter, and sometimes with 

 pyriform or subglobose, ve- 

 sicular branches or hyphal 

 ends up to 12x9 /i ; no cystidia ; 

 spores colored, even, 7-8 X 

 3-4 /x. 



Fructifications 5-10 cm. long, 3-5 cm. broad. 



On a pine box in contact with the soil in a garden. Parral, 

 Mexico. August. 



This species is characterized by fructification becoming sep- 

 arable from substratum, by dry and loosely interwoven struc- 

 ture, by inflated or vesicular hyphal organs, and by smaller 

 spores than any of the preceding species. The dry rot caused 

 in the pine wood is of the brown, brittle type. The vesicular 

 organs do not appear to be chlamydospores. 



Specimens examined: 

 Mexico: Parral, Chihuahua, E. 0. Matthews, 22, type (in Mo. 



Bot. Gard. Herb., 4511). 



6. C. polyporoidea (Berk. & Curtis) Burt, n. comb. 

 Corticium polyporoideum Berk. & Curtis, Grevillea 1 : 177. 



1873; Sacc. Syll. Fung. 6 : 618. 1888; Massee, Linn. Soc. Bot. 

 Jour. 27 : 130. 1890. — Corticium alboflavescens Ell. & Ev. 

 Acad. Nat. Sci. Phila. Proc. 1894 : 324. 1894; Sacc. Syll. Fung. 



Fig. 5 



C. inflata. 



Spores ; hyphae with inflated portions, 

 p, and vesicular ends, v. X 665. 



