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 1-1| mm. in diameter, unless elongated by 

 confluence of two or three, about ^ nun. 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 side, 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's Ravine, 

 W. G. Fa,rlow, type. 



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

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

 44014 and 44121 respectively). 



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

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

 116 : 802. pi. 3. f. 1. 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 bottle-bnish 

 paraphysis. X870. 



