[Vol. 3 

 332 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



7. S. Patouillaxdii Burt, n. sp. 



S. (very near) Leprieiirii (Mont.) Patouillard, Soc. Myc. 

 Fr. Bui. 16:55. 1900. 

 Type : in Burt Herb. 



Fructification resupinate, effused, coriaceous, dry, velu- 

 tinous, aniline-black at first, becoming fuscous in the her- 

 barium, the margin rather thick and determinate; in struc- 

 ture 200-400/x thick, with (1) next to the 

 substratum a thin layer of loosely inter- 

 woven hyphae 3/x in diameter, buffy brown 

 under the microscope, which form (2) a 

 layer of hyphal pillars each about 30-50/i 

 in diameter, 100-200/>t long, about 3-4 to a 

 millimeter, whose hyphae spread apart 

 above and form (3) the interwoven hyme- 

 ^ig- ^ nial layer containing some probasidia and 



S. Patouillardii. 'i-i xi xf t n 



a, two probasidia; 6, With the surfacc composcd of numerous 

 spore-bearing organ; ercct, nearly straight, fuscous hyphal 



p, four paraphyses or , , ^ , o t j 



hyphal ends. X 640. branches or paraphyses 2/* m diameter; 



probasidia hyaline, subglobose, 15-20/* in 

 diameter, erect on short branches of the colored hyphae; 

 no spores found; the only possible spore-bearing organ seen 

 is 46 X 7%Ai, acuminate at the apex. 



Fructifications 2-3 14 cm. long, 1-2 cm. broad, 200-400 mm. 

 thick. 



On living branches of ash, Liquidambar, and Nyssa. Flor- 

 ida to Louisiana. November to March ; a January collection 

 has a few probasidia. 



This species may be recognized by its thin fructification 

 resembling a piece of black velvet, slightly raised from the 

 substratum on such short and slender pillars as to be barely 

 visible without the aid of a lens. Patouillard determined 

 this species for Mr. Langlois as very near to S. Leprieurii. 

 Since Corticium Leprieurii was originally described as gla- 

 brous, shining, and chocolate-colored, and since no specimens 

 like ours have yet been collected in the region between Guiana 

 and the United States, our specimens are probably a distinct 

 species which should have a definite name. 



