1925] 



BURT THE THELEPHORACEAE OF NORTH AMERICA. XIV 271 



layered in thick specimens, composed of erect and interwoven, 

 closely agglutinate hyphae 2-3 [x in diameter and of very nu- 

 merous cystidia; no gloeocystidia; cystidia incrusted, 35-80 X 

 8-12 fx, acute, numerous in all layers except next to the sub- 

 stratum; spores hyaline, even, 4-6 X 2-3 [l. 



Fructifications 3-8 cm. long, 1-4 cm. wide. 



On bark of logs of Quercus, Eucalyptus, Citrus, Ficus, and other 

 frondose species, rarely on conifers. In Europe, and in Alabama, 

 Louisiana, Missouri, Idaho, British Columbia to California, and 

 in the West Indies. May to February. Not common. 



P. Roumeguerii is possibly a synonym of P. Ravenelii, as I 

 formerly regarded it, but the numerous specimens which have 

 been studied lead me to believe that while of the same aspect, 

 spore characters, and substratum, P. Roumeguerii eventually 

 becomes twice as thick as P. Ravenelii, more closely agglutinate, 

 and its cystidia longer and slenderer in proportion to their thick- 

 ness. The error of v. Hohnel & Litschauer, loc. cit., in mis- 

 stating the year of publication of P. Molleriana as 1891 has prob- 

 ably led more recent European authors into reducing P. Roume- 

 guerii to synonymy while it really has priority. 



Specimens examined: 

 Locality not stated: G. Bresadola, authentic specimen under the 



name Peniophora Roumeguerii Bres. 

 Italy: Trient, G. Bresadola, authentic specimen of Peniophora 



Molleriana. 

 France: Aveyron, A. Galzin, 17908, comm. by H. Bourdot, 16898. 

 England: Symond's Yat, E. M. Wakefield (in Mo. Bot. Gard. 



Herb., 44759). 

 Alabama: Montgomery County, R. P. Burke, 364 (in Mo. Bot. 



Gard. Herb., 57232). 

 Louisiana: Baton Rouge, Edgerton & Humphrey, comm. by C. J. 



Humphrey, 5646, 5648; St. Martinville, A. B. Langlois, 1346, 



comm. by W. G. Farlow, 2675, 2683, 2970, cj, ck, and another 



specimen, comm. by Lloyd Herb., 3042. 

 Missouri: Creve Coeur Lake, L. 0. Overholts, 3165 (in Mo. Bot. 



Gard. Herb., 5709). 

 Idaho: Santa, E. E. Hubert, comm. by J. R. Weir, 12001 (in Mo. 



Bot. Gard. Herb., 63363). 



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