264 



INDEX 



Saprophytism, 80 



Sardinia, 144 



Sassafras, 170 



Scarlet tanager, 151 



Schizaca pusilla, 155 



Schouw, 142 



Schouw's hypothesis, 141 



Scutellum, 224 



Seed-bearing ferns, discovery of, 



20 1 

 Segregation, law of, 60 



Mendelian, 61, 62 



ratio of, 61 

 Selfing, 66 

 Self-pruning, 32 

 Semon, 143 

 Senccio, 148 

 Sequoia, 168, 169 



gigantea, 168, 178 



scmpcnnrens, 168, 178 

 Seychelles, 145 

 Shepherd's purse, 95 

 Shield fern, n, 95 

 Shirley poppies, 113 

 Sigittarla, 246 

 Silcne odontlpetala , 222 

 Siphonogam}, 133 

 Skunk cabbage, 80 

 Slate, 188 

 Small, James, 147 

 Snakes, 87 

 Solanaceae, 171 

 Solatium integrifolium, 50, 51 



nlgrum, 50, 51 

 Solomon archipelago, 151 

 Sorus, 8 



Spartina cynosuroidcs, 224 

 Special creation, doctrine of, 79 

 Spencer, Herbert, 43, 97 

 Spcncerites, 134 

 Spermatophytes, 130 

 Sperms, 21, 22, 23 



Sphenophyllum, 184 

 Sphenopsida, 238 , 

 Splienopteris Hoeninghausi, 201 

 Spiranthcs Romanzoffiana, 157 

 Spirem, 36 

 Spirogyra, 194, 196 

 Sporangia, 8, 10, n 

 Sporangiophore, 8 

 Spore-production, consequence of 



enormous, 131 

 Spores, dispersal of, 17 



germination of, 17, 18 



reproduction by, 32, 50 

 Sporophyll, 9 

 Sporophylls, 6, 7, 8, 1 1 

 Sporophyte, 33 



steps in the evolution of the, i ,} 2 

 Sporophytes, 8 

 St. Helena, 148 

 Stangeria eriopux, 207 



paradoxa, 207 

 Sterilization, 14 



progressive, 126, 128 

 Stigmaria, 246 

 Stolons, 16, 17 

 Strawberry, 113 

 Strobiloid theory, 218, 219 

 Struggle for existence, 94, 96, 153 

 Stumps, Fossil tree, 191 

 Sunflowers, red, 113 

 Sweet flag, 80 

 S\vcct peas, 66 

 Switzerland, 145 

 Sykes, Miss, 134 

 Symmetry, bilateral, 19 

 Symplocarpus fatidus, 155 

 Synangia, 209 

 Synapsis, 37 

 Synizesis, 37 



'I'aal volcano, 152 



Tiunns romnnniis, 226, 227 



