640 
INDEX TO VOLUME IV 
Oxy coccus oxy coccus intermedius, 155 
Pachistima myrsinites, 155 
Payson, Edwin Blake. The perennial 
scapose Drabas of North America, 253 
Pease, Vinnie A. Duration of leaves 
in evergreens, 145 
Perennial scapose Drabas of North 
America, 253 
Phytogeography of Manoa Valley, Ha- 
waiian Islands, 561 
Picea sitchensis, duration of leaves in, 149 
Pigments of Endothia, 336 
Pinus contorta, monticola, duration of 
leaves in, 149 
Proteins, immunochemical studies of 
wheat, 417 
Pseudotsuga taxifolia, duration of leaves 
in, 150 
Pteridium aquilinum pubescens, host of 
Uredinopsis, 331 
Puccinia Scleriae, 46; suh striata, 46; 
coronata and Sorghi, used in experi- 
ments on relation to physiology of 
their hosts, 185 
Pucciniastrum pustulatum, 334 
Raphanus sativus, viability of seeds of, 
as affected by high temperatures and 
water content, 229 
Reddick, Donald. Effect of soil tem- 
perature on the growth of bean plants 
and upon their susceptibility to a root 
parasite, 513 
Rees, Charles C. The rusts occurring 
on the genus Fritillaria, 368 
Relation between evaporation and plant 
succession in a given area, 161 
Revision of the Hawaiian species of the 
genus Cyrtandra, 604 
Rhamnus purshiana, duration of leaves 
in, 152 
Rhododendron calijornicuni, 155 
Rock, Joseph F. Revision of the 
Hawaiian species of the genus 
Cyrtandra, section Cylindrocalyces 
Hillebr., 604 
Ruhus laciniatus, pedatus, ur sinus, 153, 
154 
Rusts, of Porto Rico, 44; relation of, to 
the physiology of their hosts, 179; of 
forest trees, 327; on cedar, producing 
galls, 241 ; occurring on the genus 
Fritillaria, 368 
Sawyer, W. H., Jr. The development 
of Cortinarius pholideus, 520 
Self-fertile plants of Cichorium, 375 
Shull, Charles A, An interesting 
modification in Xanthium, 40 
Spiraea Vanhouttei, distribution of ab- 
normalities in, 624 
Squash, used in light and chlorophyll 
formation experiments, 407 
Stachytarpheta cayennensis, dichotoma, 
hosts of Endophyllum Stachytarphetae, 
50 
Sterility of seeds of Oenothera Reynoldsii, 
125 
Stevens, Neh- E. The influence of 
certain climatic factors on the develop- 
ment of Endothia parasitica (Murr.) 
And., I ; The influence of temperature 
on the growth of Endothia parasitica, 
112; (see Hawkins, Lon A., 336) 
Stout, A. B. Fertility in Cichorium 
intybus: the sporadic occurrence of 
self-fertile plants among the progeny 
of self-sterile plants, 375 
Succession, relation between, and evap- 
oration, 161 
Taxonomy of the Agaricaceae, 315 
Taxus brevifolia, duration of leaves in, 
150 
Temperature, effect of, on development 
of rusts, 187; affecting viability of 
seeds of radish, 229; effect of, on 
susceptibility of bean plants to a root 
parasite, 513; effect of, on growth of 
bean plants, 513 
Thuja plicata, duration of leaves in, 150 
Toxicity of galactose and mannose for 
green plants and the antagonistic 
