1919] 



EURT THELEPHORACEAE OF NORTH AMERICA. XI 255 



I. Tulasnella Eichleriana Bresadola, Ann. Myc. i: 113. 

 1903; Sacc. Syll. Fung. 17: 209. 1905; Bourdot & Galzin, See. 

 Myc. Fr. Bui. 25: 32. 1909; Juel, Arkiv for Bot. 14^: 8. 1915. 



Fructification effused, thin, pale lilac, finally fading to olive- 

 buff; in structure 20-60 ^l thick, composed of interwoven, hya- 

 line hyphae 3 /x in diameter; sterigmata 7-10X31-41 n; spores 

 hyaline, even, 3^-6X3-4 (jl. 



Fructifications 3-6 X 1-1 f cm. 



On rotting wood and bark of frondose species, rarely on conif- 

 erous substrata. Canada, New Hampshire, New York, Idaho, 

 and Washington. July to November. 



Fig. 1. T. Eichleriana. Young basidium, a, 

 beginning formation of sterigmata; older basid- 

 ium, b, having full-grown sterigmata; collapsed 

 basidium, c, with spore attached to one sterigma; 

 sterigma, d, bearing a spore; spores, s; hypha, h. 

 X 870. 



T. Eichleriana is noteworthy by having the smallest spores 

 and sterigmata which are known in the genus. In these details 

 American collections agree so closely with those of European 

 specimens of T. Eichleriana that one can hardly doubt their 

 being this species although authentic specimens have not been- 

 at hand for verification. 

 Specimens examined: 

 Canada: /. Macoun, 21. 

 Ontario: Ottawa, J. Macoun, 13. 

 New Hampshire: Chocorua, W. G. Farlow, 1, 4, 6**, and two 



unnumbered specimens (the last three specimens in Mo. 



Bot. Card. Herb., 55270, 55276, and 55597), and Nos. A 



and C (in Farlow Herb.). 



