1918] 



BURT THELEPHORACEAE OF NORTH AMERICA. IX 



183 



line bottle brushes, 6-7 n in diameter over branches, with cen- 

 tral axis bearing along its whole length short lateral branches 

 of equal length, densely crowded together; basidia clavate, 

 36-54x9-12 /x; spores hyaline, even, flattened on one side, 

 13-18x9-12 /I. 



Fructifications l-lj mm. in diameter, unless elongated by 

 confluence of two or three, about | mm, thick. 



On dead twigs of hemlock, per- 

 haps on balsam fir also. New 

 Hampshire and New York. Rare. 



A. Farlowii has the general as- 

 pect of A. amorphus but may be 

 separated from this species when 

 examined superficially, by its 

 smaller fructifications, which are 

 nearly black on the unattached part 

 of the under sid^, while those of the 

 larger species are light-colored ; the 

 small basidia, small spores, bottle- 

 brush paraphyses, and absence of 

 incrusting matter afford additional 

 decisive characters. A. Oakesii has 

 bottle-brush paraphyses which are of greater diameter than 

 those of A, Farlowii and with fewer branches and its fructi- 

 fications are much larger and of a different form. 



Specimens examined: 

 New Hampshire : Chocorua, W. G. Farlow; King^sJRavine, ^/^ ^^fct^ t\ 

 W, G, Fo^rlow, type. 



New York: Vaughns, Hudson Falls, S, H. Burnham, 21, 

 and an unnumbered collection (in Mo. Bot. Gard. Herb., 

 440m and 44121 respectively). 



3. A. Oakesii (Berk. & Curtis) Cooke, Grevillea 3 : 172. 

 1875; V. Hohn. & Litsch. K. Akad. Wiss. Wien Sitzungsber. 

 116:802. pl.3.f,l, 1907. 



Corticium Oakesii Berk. & Curtis, Grevillea 1 : 166. 1873 ; 

 Sacc. Syll. Fung. 6 : 606. 1888; Pierce, Torr. Bot. Club Bui. 

 17 : 301. pi. 110. f. or-i. 1890. 



Fig. 2 

 A. Farlowii. 

 Two spores and bottje-brush 

 paraphysis. X870. 



