Sept. 1907] Index to North American Mycology 213 



CoRTiNARius rubipes Kauffman n. sp. ; the stem is attached to 

 roots of Acer saccharinum and Quercus rubrum on which it 

 forms mycorrhiza. Mich. Acad. Sci. 8:32. Meeting of 

 1906. Date (?). 



Cosmos sulphureus, host to Entyloma holwayi Sydow. [Mex. 

 ico.] N. A. Flora, 7 :63. 4 Oct. 1906. 



Crataegus, branch, host to Dermatea oHvascens Rehm n. sp. 

 Ann. mycolog. 5:80. Feb. [issued 30 Mar.] 1907. 



Culture Studies on Polymorphism of Hymenomycetes. George 

 Richard Lyman. (Proc. Boston Soc. Nat. Hist. 33:125-209. 

 PI. 18-26. Feb. 1907. 



Cynodon dactylon Pers., Bermuda grass, host to Ustilago cyno- 

 dontis P. Henn. Bull. Torr. Bot. Club, 34:208. April 1907. 



DandenOj J. B. A fungus disease of greenhouse Lettuce, [Didy- 

 maria perforans]. Mich. Acad. Sci. 1906, 8:45-7. Date of 

 issue? 



Davis, Bradley M., see Bergen, Joseph Y. and . . . 



Dermatea olivascens Rehm. n. sp. on (dead?) branches of Cra- 

 taegus still on the tree. Ann. Mycolog. 5 :8o. Feb. 1907. 

 [Issued 30 Mar. 1907.] 



Dicaeoma nesaeae Kuntze, syn. of Puccinia ludwigiae q. v. 



DiPLODiA hortensis Sacc. n. sp. in caulibus Clematidis paniculatae. 

 Jour. Mycol. 13-47. Mar, 1907. 



Dirina franciscana A. Zahlbruckner n. sp., on rocks 50 to 75 

 feet above the sea, San Francisco. Bot. Gaz. 43 :270. April 

 1907. 



Diseases, Plant, in 1906. W. A. Orton. Yearbook U. S. Dept. 

 Agr. 1906:409-508. 1907. 



Dryodon coralloides Karst., syn. of Hericimn coralloides q. v. 



Dryodon erinaceus Quel., syn. of Hericium erinaceus. 



Echinodontium tinctorium E. & E. [Fomes tinctorius E. & E. ; 

 Hydnum tinctorium Lloyd ; Hydnofomes tsugicola Hennings 

 & Shirai]. Mem. Torr. Bot. Club, 12:136. 13 June 1906. 



Entyloma holwayi Sydow, on Cosmos sulphureus. [Mexico.] 

 N. A. Flora, 7 :63. 4 Oct. 1906. 



Erysiphosis Halst. [a gen. Erysiphe non dififert immo E. par- 

 nassiae est forma Erysiphe polygoni. Salmon.] Sacc. Syll. 

 16-399. I F^^- I9<52. 



PEucHLAENiA luxuriaus, host to Ustilago kellermanii Clinton 

 n. sp. [Guatemala.] N. A. Flora, 7:15. 4 Oct. 1906. 



