INDEX TO VOLUME IV 
639 
Humidity, effect of, on development of 
rusts, 188 
Immunochemical studies of the plant 
proteins: proteins of the wheat seed 
and other cereals, 417 
Influence of certain climatic factors on 
the development of Endothia parasitica 
(Murr.) And., 7 
Influence of temperature on the growth 
of Endothia parasitica, 112 
Inheritance of endosperm color in maize, 
396 
Jamaican montane rain-forest vegeta- 
tion, 268 
Juniper us scopulorum, duration of leaves 
in, 149 
Kalmia polifolia, 154 
Knudson, Lewis. The toxicity of 
galactose and mannose for green plants 
and the antagonistic action of other 
sugars toward these, 430 
La Rue, Carl D. and Bartlett, H. H. 
Matroclinic inheritance in mutation 
crosses of Oenothera Reynoldsii, 119 
Lawrence, John V. (See Harris, J, 
Arthur, 268) 
Leaf-structure as related to environment, 
533 
Ledum groenlandicum, 154 
Light and chlorophyll formation, in- 
fluence of, on the minimum toxic con- 
centration of magnesium nitrate for 
the squash, 407 
Light, effect of, on development of rusts, 
191 
Linnaea americana, 153 
LuTZ, Anne M. Fifteen- and sixteen- 
chromosome Oenothera mutants, 53 
MacCaughey, Vaughan. Gunnera 
petaloidea Gaud., a remarkable plant 
of the Hawaiian Islands, 33; The 
phytogeography of Manoa Valley, 
Hawaiian Islands, 561 
Macrosporium, taxonomic characters of, 
439 
Magnesium nitrate, toxic concentration 
of, 407 
Mains, E. B. The relation of some rusts 
to the physiology of their hosts, 179 
Maize, inheritance of endosperm color in, 
396 
Mannose, toxicity of, for green plants, 
430 
Manoa Valley, Hawaii, phytogeography 
of, 561 
Matroclinic inheritance in mutation 
crosses of Oenothera Reynoldsii, 119 
Micromeria douglasii, 153 
Mikania cordifolia, odoratissima, hosts of 
Endophylloides, 51 
Mineral salts, effect of, on development 
of rusts, 190 
MuRRiLL, William A. The taxonomy 
of the Agaricaceae, 315 
Mutation, from Xanthium canadense, 43 
Observations on forest tree rusts, 327; 
on an Achyla lacking sexual reproduc- 
tion, 354 
Oenothera albida, 72; hipartita, 63, 64; 
gigas X Lamarckiana, 68; Lamarck- 
iana, 65; Lamarckiana X gigas, 67; 
lata, 55, 59; lata X gigas, 66 
Oenothera Reynoldsii, matroclinic inheri- 
tance in mutation crosses of, 119; 
pedigree of, 122, 123 
Oenothera mutants, with fifteen and 
sixteen chromosomes, 53 
Olive, E. W. and Whetzel, H. H. 
Endophyllum-like rusts of Porto Rico, 
44 
Omphalia chrysophylla, development of, 
222 
Opuntia megacantha, 572 
Origin and development of the galls pro- 
duced by two cedar rust fungi, 241 
Osmotic concentration of the tissue fluids 
of Jamaican montane rain-forest vege- 
tation, 268 
Overwintering of rusts, 332 
