INDEX TO VOLUME IX 
579 
Magnolia, cell division in, 302 
Malva rotundi folia, viability of seeds in. 268 
Marcgravia, the pollination of; a classical 
case of ornithophily?, 370 
Marcgravia cuyuniensis, description of, 
377; purpurea, description of, 378 
Marchantiales, 285 
Martynia lutea, stigma of, 103; proboscidea, 
stigma of, 103 
Martyniaceae, stigmas of, 120 
Meiotic cytokinesis of Nelumbo, the, 296 
Mercurialis annua, sex in, 78 
Merriman, Mabel L. A new species of 
Spirogyra with unusual arrangement of 
the chromatophores, 283 
Micrococcus, on Oenothera Lamarckiana, 
447 
Mildew in Oenothera, a preliminary notice 
of genetical studies of resistance to, 446 
Mimulus cardinalis, stigma of, 103; gla- 
hratus, 108; glahratus var. Jamesii, 109; 
guUatus, icq; luteus, 103; punctatus, 117 
Mineral nutrients in host, 185 
Missouri, ecological relations of plants in 
southeastern, i; forests of southeastern, 3 
Monoseleniiim tenerum, 288 
MuENSCHER, Walter C. The effect of 
transpiration on the absorption of salts 
by plants, 311 
Nelumbo, the meiotic cytokinesis of, 296 
Nephrolepis, the origin of new varieties of, 
by orthogenetic saltation II. Regress- 
ive variation or reversion from the 
primary and secondary sports of boston- 
iensis, 140 
Newcombe, F. C. Significance of the 
behavior of sensitive stigmas, 99 
Nichols, Susan P. Methods of healing 
in some algal cells, 18 
Nicotiana, cell division in, 303 
Nitella, healing in, 20 
Nitrogen nutrition in host, 185 
Norantea anomala, 371; brasiliensis, 371 
Notoholcus lanatus, 199 
Nuphar luteum, cytokinesis in, 297 
Nutrient solutions for plant cultures, phys- 
iological balance in, 180; solutions for 
wheat, 270 
Nymphaea alba, cell plate in, 298; cyto- 
kinesis in, 297 
Oenothera, a preliminary notice of ge- 
netical studies of resistance to mildew in, 
446; biennis, 391, viability of seeds in, 
268; biennis Chicago, 448; cinerescens, 
/[4g; franciscajia, the reduction divisions 
in the pollen mother cells of, 391 ; grandi- 
flora, 391; Lamarckiana, infection by 
Micrococcus, 447; mississippiensis, 448; 
numismatica, 448, immunity to mildew, 
446; nutans, 447; pratincola, 448, in- 
fection by mildew, 446, hyb. immunis, 
448, hyb. viscida, 448; Reynoldsii, 449, 
immunity to mildew, 446; scitula, im- 
munity to mildeM% 446; stenomeres, in- 
fection by mildew, 446 
Ornithophily?, the pollination of Marc- 
gravia: a classical case of, 370 
Orthogenetic saltation, the origin of new 
varieties of Nephrolepis by, II. Regress- 
ive variation or reversion from the pri- 
mary and secondary sports of bostoniensis, 
140 
Peach, Elberta, 93; Greensboro, 94; buds, 
undercooling of, 93 
Pears, freezing of, in storage, 555 
Pellia epiphylla, 291 
Penicillium cyclopium and hydrogen-ion 
concentration, 161 
Peridermium balsameum, origin of pycnia 
of, 363; Hydrangeae, origin of pycnia 
of, 363 ; Peckii, origin of pycnia of, 363 
Peronospora Arthuri, 447 
Pestalozzia Guepini Desm., a demonstration 
of numerous distinct strains within the 
nominal species, 79; palmarum, diseases 
caused by, 81; Theae, on tea, 81 
Phaseolus vulgaris L., the common bean, 
the effect of Bordeaux mixture upon the 
chlorophyll content of the primordial 
leaves of, 535 
Phleum pratense, susceptibility of, to dis- 
ease, 197 
Phloem, lignification of mature, in her- 
baceous types, 239 
Pholiota, development of ; adiposa, flam- 
mans, squamosa, 512 
Phoma apiicola, 464 
Pisum sativum, infection hy Erysiphe Poly g- 
oni, 450 
Plagiochasma, 292 
Plant physiology, biophysics as a point of 
view in, 37 
