io66 



Schwendener, 365, 912, 914 

 Sciodopitys, 659, 677 

 Scilla noii-scripta, 943 

 Scirpiis, 1 01 9 



— caespitosus, gi6 



— lacustris, 948 

 Sclereids, 461 

 Sclerenchyma, 461 

 Sclerophyllous leaves, 1028 

 Scots Pine, 659 

 Scrophidaria olato, 930 

 Secondary cell wall, 1 1 



— cortex, 593, 863, 878 



— mycelium, 294 



— thickening, 665, 854, 884 



— vascular tissues. Phloem, 894 



Xylem, 895 



Secretions, 3 



Sedges, 978, 994, 1019 

 Sedum reflexum, g8y 



— spathifolium, 1000 

 Seed, evolution of, 639 



— Plants, 637 

 Semele, 924 

 Senecio jocobaea, g52 



— vulgaris, 834, 952 

 Selaginella, 633, 838 



— alternation of generations, 590 



— anatomy of leaf, 580 



of rhizophore, 581 



of stem, 579 



— development of embryo, 589 



— female gametophyte, 587 



— male gametophyte, 585 



— sporangia, 581 

 Selogitiella apoda, 585, 591, 6jg 



— kraussiona, 577 



— martensii, 582 



— rupicola, 580 

 Selective parasitism, 228 

 Sequoia, 658, 659 

 Sessile leaves, 950 

 Seta, 395, 405, 444 



Sex chromosomes, 26 

 Short shoot, 840 

 Sieve fields, 467, 861 



— plates, 860 



— tubes, 467, 860, 863 

 Sigillaria, 607 

 Simple leaves, 950 

 Simplices, 481, 518, 520 

 Sinapis alba, 797 

 Sinnott, 561, 910 

 Siphonales, 91 

 Siphonocladiales, 100 

 Siphonogamia, 637 

 Siphonostele, 559 

 Siphons, 160 



Sliding growth, 462, 893, 899 

 Slime plugs, 467 

 Smilacina racemosa, ^76" 

 Stnilax, 1037 



— rotundifolia, 1042 



Smut Fungi, biological races, 311 

 Smuts, importance to Agriculture, 3 1 1 



— of Cereals, 307 

 Solanaceae, 887 

 Solatium aispum, 452, 855 



— tuberosum, 476, 851, g^y, 1018 



INDEX 



Solenostele, 559 



— amphiphloic, 561 

 Solomon's Seal, 934 

 Sonneratia, 824 



— alba, 818 

 Soredia, 367, 372 

 Sorus, 489, 720 

 Spanish mahogany, 835 

 Special cell contents, 475 

 Species, meaning of, 38 

 Spermatophyta, 5, 48, 50 



— classification of, 638 



— morphology of the shoot, 645 

 Spermatophyte shoot ; summary of theories 



regarding, 656 

 Sphaerella = Haematococcus, 59 

 Sphaerotheca ; asexual reproduction, 253 



— sexual reproduction, 253 

 Sphaerotheca humuli, 253 

 Sphagnales, 285, 438 

 Sphagnum, 2, 410, 439 



— sexual reproduction, 443 



— sporogonium, 444 



— vegetative structure, 439 

 Sphagnum cytiibifolium, 443 

 Sphenophyllales, 649 

 Sphenophyllum, 636 

 Sphenopsida, 48, 50, 618, 649 

 Spindle fibres, 20 

 Spirillum, 347 



— volutans, 275 

 Spirochaetales, 349 

 Spirochaetes, 347 

 Spirogyra, 87, 182, 201 



— chain type conjugation, 89 



— ladder type conjugation, 88 



— sexual reproduction, 88 

 Spirogyra longata, go 



— neglect a, go 



Spongospora subterranea, 193, ig6, 197 

 Spongy layer, 684 



— mesophyll, 1000 



— tissue, 1019 

 Spontaneous generation, 352 

 Sporangiophore, 610, 627, 636 

 Sporangium plurilocular, in 



— unilocular, in 



Spore Production in higher Fungi, 



327 

 Sporocarp, 547 

 Sporogonium, 389 

 Sporophore, 312 

 Sporophyll, 488 

 Sporophyte, 1 10 

 Sprengel, Kurt, 784 

 Spring wood, 903 

 Spruces, 657 

 Spurs, 840 

 Stachyospory, 581 

 Stachys tuberifera, g36 

 Staling ; in Fungi, 339 

 Stalk cell, 651, 727 

 Stamens, 780 

 Stangeria, 708, yog, 714, 717 



— paradoxa, 726 

 Staphylococcus aureus, 347 

 Starch sheath, 882 

 Statoliths, 796, 882 

 Stearocutic acid, 868 



