1921] The Thelephoraceae of North Carolina 157 



7. Aleurodiscus botryosus Burt. 



Plate 31 



Entirely effused to form elongated patches up to 5-6 cm. or 

 smaller, more scattered patches. Surface under a lens more or less 

 lacunose and granular-looking except in the thickest places where 

 it is continuous; pure white or creamy, smooth, and removable as a 

 soft, flexible membrane when wet; thickness in our collection only 

 45-65tx, nearly all of which consists of the hymenium, in which are 

 embedded a large number of subspherical, amorphous, irregular 

 bodies, probably of a proteid nature. Many bottle brush paraphyses 

 present in hymenium. 



Basidia 11-12^ thick, with four long, curved sterigmata 14-16tJL 

 long. Spores white, minutely rough, oval with an abrupt mucro, 

 flattish on one side, very granular when shed, sprouting freely over 

 night in a damp chamber, 7.5-10.5 x 14-19[jl. 



Except for its thinness, amounting to scarcely more than a hy- 

 menium on the substratum, our plant agrees well with Burt's species 

 and our determination has been confirmed by him. 



4710. On dead blackberry in low place, Glen Burnie Farm, December 5, 1920. 



4724. On standing dead shoot of lilac, December 12, 1920. Spores white, surface 

 minutely warted, 8.5-11 X 14.8-18.5^. 



4740. On dead vine of Vitis (aestivalis ?) December 18, 1920. Spores white, sur- 

 face minutely rough, 8.5-11 X 14. 8-18. 5m. 



CONIOPHORA 



Entirely resupinate, fleshy, subcoriaceous or membranaceous; 

 hymenium undulate, tubercular, granular or even; basidia simple; 

 spores smooth or slightly angular, ochraceous or at times nearly color- 

 less. Saprophytic on dead wood, often causing serious decay of 

 structural timber. Burt reports three species from North Carohna 

 and nineteen from North America. See Burt, Ann. Mo. Bot. Gard. 

 4: 237. 1917. Also see Massee in Journ. Linn. Soc. (Bot.) 25: 128. 

 1889. We are including but one species. 



Coniophora arida (Fr.) Karsten. 



Plate 31 



Irregularly effused, membranaceous when wet, forming long, 

 thin, narrow patches about 1-3 cm. broad by several cms. long and 

 about 175[j. thick on average, with indeterminate margins. Color 



