234 INDEX TO AMERICAN BOTANICAL LITERATURE 
Williams, K. A. A botanical study of skunk cabbage, Symplocarpus 
foetidus. Torreya 19: 21-29. pl. 1, 2. F 1919 
Williams, R.S. Archidium cubense sp. nov. Bryologist 22: 2. 20 F 
1919. 
Williams, R. S. Hylocomium alaskanum (L. & J.) Kindb. endast 
gist 22: 1. f. 1-3. 20 F 1919. 
[Woods, F. A.] Plant breeders find new tobacco hybrid. Jour. Her- 
-edity 9: 354-356. f. 7-9. 6 F 1919, 
Zelada, F. Sobre una nueva esencia del Blepharocalix gigantea Lillo 
(Horeo-molle). Univ. Tucuman Dep. Invest. Indust. 7: 5-13. f. 
I-3. 1917. 
Zelada, F. Estudio del ‘‘ Tagetes anisata”’ Lillo, n. sp. Univ. Tucuman 
‘Dep. Invest. Indus. 8: 3-15. f. 1-7... 1918. 
Zeller, S. M. Fungi found on Codium mucronatum. Puget Sound 
Biol. Sta. Publ. 2: 121-123. 
Chytridium codicola, Rhizophidium codicola oe Stemphylium Codii, spp. nov., 
are described. 
Zimmerman, H. E. First apple tree of the north-west. Am. Bot. 24: 
131,132. 1978. 
Zimmerman, H. E. Cultivated blueberries. Am. Bot. 25: 7, 8. F 
1919. — [Illust.] 
Zinssmeister, C. L. Ramularia root-rots of ginseng. Phytopathology 
8: 557-571.f. 1-8. N 1918. 
