1920] 



BURT — THELEPHORACEAE OF NORTH AMERICA. XII 93 



Thelephora macrorrhiza L^veill6, Ann. Sci. Nat. Bot. III. 

 5: 146. 1846; Sacc. Syll. Fung. 6: 524. 1888. 



Type: in Museum of Paris Herb., according to Leveill6 and 

 Lloyd. 



Pileus infundibuliform, coriaceous, somewhat membrana- 

 ceous, rufescent, striatulate, the margin erect, possibly laciniate; 

 hymenium sulcate, rather pallid; stem rather long, radicated. 



On ground, French Guiana. Coll. Melinon. 



Pileus coriaceous, nearly membranaceous, infundibuliform, 

 russet, with rugosity from base to margin, the latter thin, lacini- 

 ate; hymenium glabrous, rugose like upper surface of pileus; 

 stem 1-2 decimeters long, glabrous, continued by a long radi- 

 cated portion which extends perpendicularly into the ground. 

 This character and also the absence of hairy covering of the stem 

 afTord a great difference between this species and Stereum 

 surinamense. 



The above is a translation of the original description. I have 

 not seen authentic specimens; Lloyd notes, loc. cit., that they 

 are, '^Stereum elegans, of an unusually regular growth. Not so 

 confluent as ordinary." 



6. S. Burtianum Peck, N. Y. State Mus. Bui. 75: 21. pi. 0. 

 f. 30-34. 1904; Sacc. Syll. Fung. 17: 163. 1905; Lloyd, Myc. 

 Writ. 4. Stip. Stereums, 21. textf. 537. 1913. Plate 2, fig. 5. 



Illustrations: Peck, loc. cit.; Lloyd, loc. cit. 



Type: in N. Y. State Mus. Herb, and in Burt Herb. 



Fructifications gregarious, coriaceous, thin, infundibuhform, 

 sometimes split to the stem on one side, sometimes dimidiate, the 

 upper surface slightly uneven with radiating fibrils and fibrillose 

 ridges, cartridge-buff when fresh, drying Sayal-brown to hazel, 

 the margin lobed or incised; stem solid, minutely tomentose, 

 Sayal-brown in the herbarium; hymenium even or radiately 

 uneven, glabrous, yellow ocher to pinard-yellow when fresh, 

 becoming pinkish buff to Sayal-brown in the herbarium ; pileus 

 in section 600 m thick, composed of densely and longitudinally 

 arranged hyphae 2 m in diameter; no cystidia nor gloeocystidia; 

 spores hyahne, even, subglobose, 3-4 m in diamter, or 4X3 m. 



Fructifications usually 12-20 mm. high, 5-15 mm. in diameter; 

 stem 3-8 mm. long, |-1^ mm. thick. 



