GENERAL INDEX 



Classified entries will be found under Contributions and Reviewers. New names 

 and names of new genera, species, and varieties are printed in bold face type; 

 synonyms in italics. • 



Acer floridanum 234; Negundo 237; 

 Negundo arizonicum 240; Negundo 

 californicum 241; Negundo interior 

 239; Negundo texanum 239; Negundo 

 texarium latifolium 239; Negundo 

 violaceum 238; rubrum 235; rubrum 

 Drummondii 236; rubrum Drum- 

 mondii rotundata 237; rubrum tomen- 

 tosum 235; rubrum tridens 237; sac- 

 charum 233; saccharum glaucum 233; 

 saccharum Rugelii 233; saccharum 

 sinuosum 234 



Acrothecium flacatum 509 



Actinomyces, morphology of 65, 147 



African plants 184 



After-ripening and germination 281 



Agaricaceae of Michigan 279 



Alternation of generations in Padina 278 



Alway, F. J. 185 



American gall insects 268 



Angiosperm wood lacking vessels 279 



Apogamy in Camptosorus 280; in 

 Nephrodium 519 



Apospory in Pteris sulcata 469 



Appleman, C. O. 98, 99, 100, loi; work 

 of 179 



Apple trees, blister canker of 105 



Aquilegia 184 



Arber, Agnes, work of 273 



Archangiopteris 84, 89; Henryi 90; 

 Somai92; subintegra 90; tamdaoensis 

 91 



Arthur, J. C. 180, work of 184 



Artsch wager, E. F. 373 



Atkinson, G. F. 266; biographical sketch 

 of 366 



Azotobacter, nitrogen fixation by 518 



B . 



Bacterial tumor and wound callus 516 



Bailey, C. H., work of 180 



Bailey, I. W. 276, 438, 449; work of 279, 



374 

 Baker, O. E., work of 103 



Bars of Sanio 449 



Bartlett, H. H., work of 100 



Basidium, cytology of 376 \ 



Baur, E., work of 95 ' 



Belling, J., work of 514 



Bennettitales 375 



Betula commijcta 216; Eastwoodae 216 



Bews, J. W., "Grasses and grasslands of 



South Africa" 370 

 Bexon, Dorothy, work of 280 

 Blackman, V. H., work of 278 

 Blister canker of apple trees 105 

 Boerker, R. H. D., "Our national forests" 



370 

 Bonnier, G., work of 178 

 Bonns, W. W., work of 277 

 Borneo, ferns of 104 

 Brenchley, Winifred C, work of 182, 183, 



British lichens 268 



Brotherton, W., work of 100 



Brown, Elizabeth W., work of 183, 280 



Bryophytes of Iceland 104 



Buried weed seeds 515 



Camptosorus, apogamy in 280 



Cane sugar, action of neutral salts on 



acid inversion 98 

 Cape Breton, coniferous sand dune of 



417; vegetation of 370 

 Carex, chromosomes in 448 

 Castanea alnifolia floridana 242 

 Catalase, respiration and vitamines 189 

 Cavers, F., work of 270 

 Celtis Douglasii 218; laevigata 221; 

 laevigata anomala 225; laevigata 

 brachyphylla 225; laevigata brevipes 

 226; laevigata microphylla 225; laevi- 

 gata Smallii 223; laevigata texana 223; 

 Lindheimerii 219; occidentalis 217; 

 occidentalis canina 217; occidentalis 

 crassifolia 217; pumila 227; pumila 

 Deamii 228; pumila georgiana 227; 

 reticulata 220; reticulata vestita 221 

 Cercospora persona ta 510 



523 



