[Vol. 4 

 244 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



some granular incrustation rather than of a uniformly com- 

 pact, fleshy, non-incrusted hyphal structure from substratum 

 to basidia as in C. cerehella. 



Specimens examined: 

 Exsiccati: Ell. & Ev., N. Am. Fungi, 1588 (in the copies of 

 U. S. Dept. Agr. Herb, and of Farlow Herb,, but not in 

 copy of Mo. Bot. Gard. Herb.). 



New Jersey: Newfield, J. B. Ellis, 3092 to Cooke, type (in 

 Kew Herb.) ; same locality and collector. Ell. & Ev., N. Am. 

 Fungi, 1588 (in copies of U. S. Dept. Agr. Herb, and of 

 Farlow Herb.). 



3. C. arida (Fr.) Karsten, Finska Vet.-Soc. Bidrag Natur 

 och Folk 37:161. 1882; Sacc. Syll. Fung. 6:648. 1888; 

 Massee, Linn. Soc. Bot. Jour. 25 : 132. 1889. 



Thelephora arida Fries, Elenchus Fung. 1 : 197. 1828. 

 Corticium aridum (subg. Coniophora) Fries, Hym. Eur. 659. 

 1874; Cooke, Grevillea 8:89. 1880. Coniophora Coohei 

 Massee, Linn. Soc. Bot. Jour. 25 : 136. 1889; Sacc. Syll. Fung. 

 9 : 242. 1891. 



Illustrations : Fries, Icones Hym. pi, 199. f. 1, 

 Type : in Herb. Fries, authentic specimen in Kew Herb. 

 Fructification effused, membranaceous, adnate, drying from 

 warm buff to tawny olive or rarely darker, the margin paler 

 and sometimes whitish; hymenium even, 

 pulverulent; structure in section 100-500 /x 

 thick, composed of loosely interwoven, thin- 

 walled, often collapsing, usually hyaline 

 hyphae 2-3 /x in diameter, not incrusted; no 

 cystidia; basidia with 4 sterigmata, protrud- 

 ing; spores tawny olive in a spore collection, 

 even, 10-12x6-7 /x. 

 c. arida Fructifications 4-20 cm. long, 1-8 cm. 



Section of fructifi- broad, %o-% mm. thick, 

 spores^ X C65^ ^^' Commou ou prostrate limbs and logs and 

 on under side of boards and timbers of co- 

 niferous species, rarely on frondose species. Canada to 

 Louisiana and westward to Idaho. 



