IVol. 13 

 280 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



On under side of dead Magnolia Fraseri. West Virginia. 

 April. 



In the original description it is stated, "The membrane on 

 which the hymenium stands where exposed on the incurved 

 margin of the pezizoid areas is pale brown." Some twenty years 

 ago at the time my sections of the type were made, I did not 

 record whether the sections were colored within or not. They 

 are now colorless but may have faded. The large spores pre- 

 clude reference to C hydnans. 



Specimens examined : 

 West Virginia: L. W. Nuttall, 690, type (in N. Y. Bot. Gard. 



Herb.). 



91. C. laeve Persoon, Roemer Neues Mag. Bot. 1: 110. 1794; 

 Sacc. Syll. Fung. 6: 611. 1888; Bresadola, Ann. Myc. 1: 94. 

 1903; Bourdot & Galzin, Soc. Myc. Fr. Bui. 27: 232. 1911; Rea, 

 Brit. Basid. 673. 1922. 



Thelephora laevis Persoon, Syn. Fung. 575. 1801 (under Cor- 

 tidum); Myc. Eur. 1: 130. 1822. — T. evolvens Fries, Obs. Myc. 

 1: 254. pi. 4, f. 5. 1815; Syst. Myc. 1: 441. 1821; Elench. 

 Fung. 1: 181. 1828. — Corticium evolvens Fries, Epicr. 557. 

 1838; Hym. Eur. 646. 1874; Sacc. Syll. Fung. 6: 604. 1888; 

 Massee, Linn. Soc. Bot. Jour. 27: 118. pi 6, /. 4. 1890.— Not 

 Corticium laeve Fries, which is a Peniophora. 



Type: in Herb. Mougeot, according to Bresadola in letter. 

 Fragment of type from Quelet to Bresadola in Burt Herb. 



Fructifications usually widely effused, rarely small and disk- 

 shaped, very rarely slightly refiexed, thick, membranaceous, 

 tender, small pieces separable when moist, becoming cream color 

 and light pinkish cinnamon to wood-brown and drab in the 

 herbarium, waxy, even, more or less undulate, sometimes coarsely 

 tuberculate, cracking in drying and showing on the sides of the 

 fissures a thick, crust-like hymenial layer of about the same color 

 as the surface of the hymenium and connected with the sub- 

 stratum by a thicker layer of whitish floccose or loose tissue, the 

 margin white, silky, radiating, but sometimes free when the 

 fructifications are pezizaeform and 1-3 mm. in diameter; in 

 section 200-500 ;jl thick, 2-layered, with the hymenial layer usually 



