June 1902 ] Index to North American Mycology 
91 
Salix, decorticated twigs, host to Tryblidium occidentale Earle 
n. sp. PI. Bakerianae, 2:10. 25 March 1901. 
Salsola kali tragus, matrix for Pleurage dakotensis Griffiths sp. 
nov. Mem. Torr. Bot. Club, 11:88. 30 May 1901. 
Salsola kali tragus, old stems from rubbish heap, matrix for 
Delitschia apiculata Griffiths sp. nov. Mem. Torr. Bot. Club, 
11 H05. 30 May 1901. 
Sambucus, dead stems, host to Tubercularia miniata Earle n. 
sp. PI. Bakerianae, 2:30. 25 March 1901. 
Sambucus melanocarpa (dead twigs), host to Exosporium sam- 
buci Tracy & Earle n. sp. PI. Bakerianae, 1136. 22 Feb. 
1901. 
Sanicula marylandica, host to Puccinia marylandica Lindroth 
sp. n. Meddel. fr. Stockholms Hogskolas botaniska Institut. 
Bd. IV. 1901. 
Scaphidium Clements nov. gen. (Excipulaceae). Univ. Nebr. 
Bot. Surv., 5:5. 30 March 1901. 
Scaphidium boutelauoe Clements n. sp., on Bouteloua hirsuta. 
Univ. Nebr. Bot. Surv., 5:5. 30 March 1901. 
Scaptomyca graminum Fallen, host to Stigmatomyces scapto- 
myzae Thaxter nov. sp. Proc. Amer. Acad. Arts & Sci., 
36:400. March 1901. 
Scatella stagnalis Fallen, all parts, host to Stigmatomyces pur- 
pureus Thaxter nov. sp. Proc. Amer. Acad. Arts & Sci., 
36:404. March 1901. 
Schizostoma cercocarpi Earle n. sp., on dead but not weather¬ 
worn branchlets of Cercocarpus. PI. Bakerianae, 2:18. 25 
March 1901. 
Schrenk, Hermann von. A Disease of the Black Locust 
(Robinia pseudacacia L.) Mo. Bot. Gar. An. Rep., 12:21- 
31. PI. 3. 1901. (Polyporus (Fomes) rimosus Berk.). 
Also Science, N. S., 13:247. 15 Feb. 1901. 
Schrenk, Hermann von. Factors which cause the disease of 
wood. Journal of the Western Society of Engineers, 6:89. 
3 pi. May 1901. 
Schrenk, Hermann von. Fungus Diseases of Forest Trees. 
Year-book U. S. Dept. Agr., 1900:199-210. 4 pi. 1901. 
Sedgwick, William T. The Origin, Scope and Significance of 
Bacteriology. Science, N. S., 13:121-8. 25 Jan. 1901. 
Selby, A. D. Onion Smut—Preliminary Experiments. Ohio 
Agr. Exp. Sta. Bull., 122:71-84. 1901. 
