Feb. 1903 ] Index to North American Mycology 
37 
Nummularia discreta Tul., see Canker of Apples. . . . 
Nyctalis, Key to species, see Hygrophoreae, Key. . . . 
Nyssa multiflora, host to Melanconis (Melanconiella) nyssae- 
gena E. & E. n. sp. Jour. Mycol. 8:18. May 1902. 
O’Brien, Abigail A. Notes on the comparative Resistance to 
High Temperatures of the Spores and Mycelium of Certain 
Fungi. Bull. Torr. Bot. Club, 29:170-2. Mar. 1902. 
Odontia Fr., syn of Etheirodon q. v. 
O’Gara, P. J. Notes on Canker and Black-Rot. [Sphaeropsis 
rhoina (Schw.) Starb., and S. malorum.] Science, N. S. 
16:434-5. 12 Sept. 1902. 
Ohio Fungi, Fascicle II. [Reprint of original descriptions.] 
W. A. Kellerman. Ohio Naturalist, 2:205-213. Feb. 1902. 
Ohio Fungi, Fascicle III. W. A. Kellerman. [The original de¬ 
scriptions of 18 species.] Jour. Mycol. 8:5-11. May 1902. 
Ohio Fungi, Fascicle IV. [The original descriptions of 20 
species.] W. A. Kellerman. Jour. Mycol. 8:56-62. June 
1902. 
Ohio Fungi, Fascicle V. [Labels and the original descriptions 
of 20 species.] W. A. Kellerman. Jour. Mycol. 8:119-125. 
Oct. 1902. 
Ohio Stations for Myriostoma. John H. SchafTner. Jour. 
Mycol. 8:173. Dec. 1902. 
Ohleriella Earle gen. nov. [Amphisphaeriaceae.] Bull. N. Y. 
Bot. Garden, 2:(349). 25 Apr. 1902. 
Ohleriella neo-mexicana Earle n. sp., on old whitened woody 
stems. Bull. N. Y. Bot. Garden, 2:(349). 25 Apr. 1902. 
Olive Diseases, see Diseases , Olive . 
Olive, Edgar W. Monograph of the Acrasieae. Proc. Boston 
Soc. Nat. Hist. 30:451-513. pi. 5-8. Aug. 1902. 
Omphalia campanella sparsa Peck n. var., among fallen leaves 
and under pine trees. N. Y. State Mus. Bull. 54:964. Nov. 
1902. 
Onagra biennis (L.) Scop., host to aecidial stage of Puccinia 
peckii (De Toni) Kellerm. n. n. Jour. Mycol. 8:20. May 
1902. 
Opeographa (Sect. Pleurothecium) umbellulariae A. Zahlbr. n. 
sp., ad corticem Umbellulariae californicae. Beihefte z. Bot. 
Centrabl. 13:154. 1902. 
