TABLE OF CONTENTS 
Hybrid Nymphaess, Ха G. H. Pring 
Monograph of the North and Cen- 
tral American Species of the 
Genus Senecio—Part П......... J. M. Greenman 
A Spurless Variety of Habenaria 
о... ЕТЕ CS PLIN Магу М. Вгуап 
A Systematic Study of the North 
American Genus Trillium, Its 
Variability, and Its Relation to 
Paris and Медео... R. R. Gates 
Studies in the Physiology of the 
Fungi. ІП. Physical Ртор- 
erties of Wood in Relation to 
Decay Induced by  Lenzites 
о г СРР SS 5. М. Zeller 
Studies in the Physiology of the 
Fungi. ТУ. The Growth of Cer- 
tain Fungi in Plant Decoctions. 
Preliminary Account .......... 
B. M. Duggar, J. W. Severy, and H. Schmitz 
Studies in the Mosaic Diseases of 
хе “Т СТ” С. W. Freiberg 
The Thelephoraceae of North 
ОЕА УНЕ ora si силат Е. A. Burt 
Algological Notes. I. Chlorochy- 
trium gloeophilum Bohlin........... G. T. Moore 
PAGE 
1- 14 
15- 36 
37- 42 
43- 92 
93-164 
165-173 
175-232 
233-236 
237-269 
271-278 
