342 INDEX TO AMERICAN BOTANICAL LITERATURE 
Wilson, G. W. An Exobasidium on Armillaria. Proc. Iowa Acad. 
CL 2975994. TOES. 
Wolf, F. A. Further studies on peanut leafspot. Jour. Agr. Research 
5: 891-902. 7 F 1916. 
Wolf, F. A. Citrus canker. Jour. Agr. Research 6: 69-100. pl. 8-11 
+f. I-o.: 10 Ap 1016. 
Woodward, R. W. Bidens connata petiolata. Rhodora 17: 234. 6 Ja 
1916. 
Woolery, R. Meiotic divisions in the microspore mother-cells of 
Smilacina racemosa (L.) Desf. Ann. Bot. 29: 471-482. #l. 22t 
pide. 4) (Ors. 
Wright, C. H. Eucharis Lowii. Curt. Bot. Mag. IV. 12: $l. 8646. 
F 1916. 
Found in western tropical America. 
Wylie, R.B. A hybrid ragweed. Proc. Iowa Acad. Sci. 22: 127, 128: 
pl, 290° 2616: 
Yasui, K. Studies of Diospyros Kaki—I. Bot. Gaz. 60: 362-373: 
pl. 12, 13+f. 1-11. 15 N IQI5. 
Yates, H. S. The comparative histology of certain Californian Bole- 
taceae. Univ. Calif. Publ. Bot. 6: 221-274. pl. 21-24. 25F we 
Young, E. Studies in Porto Rican parasitic fungi—II. Mycologia 8: 
42-46. Ja 1916. 
Six new species of Cercospora are described. ; 
Young, R. A., & Popenoe, P. Saving the kokio tree. Jour. Heredity 
7: 24-28. f. 6,7. 29 D 1915. 
Zahlbruckner, A. Neue Arten und Formen der Lobelioideen. J. R& 
pert. Sp. Nov. 13: 528-537. 30 Je 1915. 
Zahn, K. H. Hieracia domingensia. Bot. Jahrb. 52: 272. 16 “ 
1915; 273-276. 3 Au 1915. f 
Zeller, S. M., & Neikirk, A. Gas exchange in the pneumatocyst : 
Wetaacniise luetkeana (Mertens) P. & R. Puget Sound Marine 
Sta. Publ. 1: 25-30. 1 Jl 1915. 
