INDEX 



Calamites, i6, 209 



Canada, 121, 138; and¥i%. 119 c 



Cardamine, 9, 1 1 



Ceterach, 106-8, 142-7 



C. aureum, 108 



C. qfficinarum, Figs. 104-6, 147 



Chiasma, 35 



China, 178, 180; andY'ig. 183A 



Christensen, 24, 63, 80-1, no, 128 



Chromosome morphology, 5. See also under shape 



Chromosome numbers 



evolutionary significance, 4, 171, 287-9 



lists, 87, 109, 126, 195, 231-2, 261. 280, 

 Appendix 4, pp. 302-5 



literature, ix, 13, 215, 281-2 

 Chromosome pairing 



illustrative examples, 7, 9 



meaning of, 5 



multivalent pairing, 34, 36, 175-6, 240, 285 



stages of, 34 



use of in analysis, 5-6, 171 

 Chromosome shape, 34-5, 215, 246, 255, 286 

 Chromosome size, 273, 287 

 Chromosome structure. See Spiral structure 

 Clapham, xii, 63 



Clausen, Keck and Hiesey, 71, 290 

 Coenopterideae, 16 

 Coenospecies, 44, 71 

 Copeland, xii, 24, 81, no, 262 

 Crambe, 15 



Creighton and McClintock, 2 

 Crepis, 5, 14-15 

 Cruciferae, 13-16, 25, 285-7 

 Cryptogramma crispa, 125; and Fig. 123c 

 Cylindrical processes in induced apogamy, 196-7 

 Cyrtomium, 22, 80, 158-70, 177-82 

 C. caryotideum, 162, 177, 179; aW Figs. 179, 183c, 



184 

 C.falcatum, Figs. 163-8, 18 1-3 



var. Rockfordii, 178-80; aW Figs. 181, 182 

 C. Fortunei, 162, 169, 178; and Figs. 170, 171, 180, 



183b, 185 

 Cystopteris, 112-22, 263, 281-2, 285, 287 

 C. alpina, 1 12-16; ana' Figs, wib, 112, 113 

 C. Baenitzii, 1 17-21 ; and Fig. 1 17c 

 C. Dickieana, 112, 1 17-18; aW Figs. 1 14-18 

 C.fragilis, 1 12-22; aW Figs, no, ni, n8-2i 

 C. montana, \\2, 122, 282; an^ Figs. i2od, 122 

 C. regia. See C. alpina 

 Cytogenetics, history, 2 



methods, 4-6, 284 

 Cytological technique, xi, n2, 284, 293-7 



Darwinism, 2-3, 290 



Diakinesis, 34, 36 



Diplotene, 34 



Doodia caudata, 197-204, 288; and Figs. 202-7 



Dopp, 59, 72, 159-60, 166, 171, 193 



Drepanophycus, 16, 245 



Drosera, 5 



Drosophila, 2, 5, 14 



Druce, 63, n7 



Druery, 48 



Dryopteris, ch. 5; 281, 285, 287, 291 



relationship to Athyrium, 93-4, 108 



subdivision of genus, 81, 85 

 D. abbreviata, 46-53; and Figs. 29, 31, 32, 34.:, 



36, 40, 42^ 

 D. aemula, 63-5; and Figs. 50, 51, 53a, 71 ^ 

 D. atrata, 158, 160, 167, 180-3; ««^ FigS' i6ga. 



I 86-90 

 D. Borbasii, 73 



D. Borreri, 54-61, 158-9, 161, 167, 171, 186-94, 

 285-6; and Figs. 7, 29, 41-9, 1690'-^, 195-201 



var. polydadyla, 58, 158-60, 167, 186-7; «"^ 

 Figs. 7a, 44, 45, 47, 1690'-^, 195, 196 

 D. Boydii, 73-4; and Fig. 60 

 D. cristata, 65-71; and Figs. 53^, 54^/, 56 

 D. cristata x D. spinulosa. See D. uliginosa 

 D. dilatata, 44, 65-72, 75-8, 86, 286; and Figs. 53^,/, 



54^ 71C 



diploid form, 75-9, 86, 282; and Figs. 53^, 62-4 

 D. dilatata x D. spinulosa, 69-71 ; and Figs. 54c, 57^ 

 D. Filix-mas, 44-6, 49, 52-4, 75, 286; and Figs. 



29, 30, 32, 34c, 35, 39, 42c-^, 43 

 D. Oreopteris, 79-81; and Figs. 65, 66, 71a 

 D. Phegopteris, 81-3, 183-4; and Figs. 69-71 

 D. polypodioides. See Gymnocarpium 

 D. remota, 71-9, 187; and Figs. 58-61, 1696, 194 



var. subalpina, 73-4; and Fig. 60 

 D. rigida, 75. See also D. Villarsii 

 D. spinulosa, 65-72, 75, 286; and Figs. 53c, 54a, 55 

 D. Thelypteris, 79-81, 85; and Figs. 67, 68 

 D. uliginosa, 68-71, 285; and Figs. 54b, 57a 

 D. Villarsii, 65-7, 86, 286; and Figs. 52, 536 and 



Frontispiece 

 Duncan, 197-203 

 Dysploidy, 5 



Ecospecies, 71, 140 



Ecotype, 14, 71 



Equisetales, 17, 22 



Equisetites Hemingwayi, 209 



Equisetum, 16-19, 22; ch. 13; 241, 285-6, 288-9 



alternation of generations, 17-20; and Figs. 5, 6 



chromosome number, discussion, 222-3, 285, 

 289; list, 231-2 



chromosome shape, 215 



chromosome sizes, 215-18 



chromosome structure (spiral), 215; andVig. 228 



chromosome swelling, 220-1 



cone buds, 213-14; and Figs. 5, 212 



cultivation, 212 



fertilization, 19, 268; andYig. 6c 



312 



