Giissow : The Canadian Tuckahoe 



109 



Some authors are inclined to include P. tuberaster and P. 

 Sapurema with P. flavo-virens. 



At any rate we feel fairly confident in referring our fruiting 

 body to the genus Grifola as revised by Murrill (8), since the 

 generic characters agree satisfactorily. 



The question of species is much more difficult ; it would seem 

 that the specific characters of this fungus do not agree with those 

 of any of the species given by Murrill under Grifola. Later and 

 more complete descriptions only, will settle some minor points. 

 We regard our specimen as deserving specific rank, and in order 

 to connect the Indian term Tuckahoe definitely with the fungus 

 that has been grown from several of them, it is proposed to ten- 

 tatively name it Grifola Tuckahoe, with the following brief 

 diagnosis : 



Grifola Tuckahoe sp. nov. 



Pileus fleshy, stipitate, lobed to imbricate, convex to plano-con- 

 vex, 7-13 cm. (and more) in diameter, ochraceous to buff tawny, 

 covered with minute dark scales on surface. Flesh soft, thick, 

 light yellow to brown. Stipe central (to lateral), short, stout, 

 compound. Tubes ochre to yellow 'brown, large, angular to 

 sinuous, shallow and decurrent towards stipe, lacerate with age. 

 Spores hyaline, guttulate, ovoid to ellipsoid, 4-7 /x by 10-17 /x, 

 grayish-white in mass. 



Habitat in poplar woods of Manitoba and Saskatchewan, grow- 

 ing from large coal-black rubber-like sclerotia, popularly known 

 as Tuckahoe. 



Central Experimental Farm, 

 Ottawa, Canada. 



Bibliography 



1. Fletcher, James. A Northwestern Tuckahoe. Rept. Dom. Exper. Farms 



for 1906 (1907), p. 232, plate facing p. 201. 



2. Gore, J. H. Tuckahoe or Indian Bread. Smithsonian Rept. 1881, p. 687. 



3- O'Connor, D. Mushrooms and Truffles. Queensland Agric. Joiir. XIX, 



p. 69. 



4- Engler & Prantl. Die natiirl. Pflanzenfamilien i. Teil ; Abt i, p. 171. 



5- Fries, Elias M. Systema Mycol. I, 1821, p. 347. 



6. Saccardo. Flora Italica Crypt. Pars i, p. 963, Mar., 1916. 



7- Lloyd, C. G. Synopsis, Sect, ovinus of Polyporus, Cincinnati, Ohio, Oct., 



191 1, p. 74 and 92, 93. 

 8. Murrill, Wm, A. Northern Polypores, 1914, p. 29. 



