190 INDEX 



Clathropteris, i6o 

 Clepsydropsis, 117, 118 

 club mosses, 53 

 Coenopteridales, 119 

 compressions, 23 

 Coniopteris, 158 

 Cooksonia, 31, 32 

 cork cambium, 22 

 cover cell, 45, 47 

 Cyathea, 156, 161 

 Cyatheaceae, 160 

 CyHndrostachya, 83 



Danaea, 128, 133 

 Danaeaceae, 127 

 Davallia, 163 

 Davallioideae, 163 

 Dennstaedtia, 156, 162 

 Dennstaedtiaceae, 162 

 Dennstaedtioideae, 162 

 dermal appendages, 131, 150 

 diaphragm, 84, 90 

 Dicksonia, 156, 158 

 Dicksopiaceae, 158 

 Dictyophyllum, 160 

 dictyostele, 18, ig 

 dictyoxylic stele, 142 

 dimorphism, 164, 167 

 Dineuron, 121 

 dioecism, 15, 112 

 diploid, 13 

 Dtplolabis, 120 

 Dipteridaceae, 160 

 Dipteris, 153, 160 

 Drepanophycaceae, 50 

 Drepanophycus, 51, 52, 179 

 Dryopteridoideae, 164 

 Dryopteris, 156, 164, 180 



Elaphoglossum, 165 

 elaters, 102, 112 

 enation theory, 177, 179 

 endarch xylem, 21 

 endoscopic embryology, 81 

 endosporic development, 14, 73, 80 

 Eoangiopteris, 128, 129 

 epibasal, 46, 63 

 Equisetaceae, 94 

 Equisetales, 106 

 Equisetites, 113 

 Equisetum, 102, 106 

 Etapteris, 118, 122 

 Eucalamites, 102, 104 

 Eusporangiatae, 127 

 eusporangiate development, 16 

 Eviostachya, 96, 99, 178 



exarch xylem, 21 



exoscopic embryology, 47, 113, 140 



FIBONACCI SERIES, 59, 70 



filamentous prothalli, 154, 158 



Filicales, 145 



filmy ferns, 155 



foot, 46, 61, 63, 90, 113, 135, 139, 



149 

 foramen, 79 

 form genera, 74 

 fossilization, 22 



GAMETOPHYTE, 1 3 



geological periods, 24, 25 

 Gleichenia, 153, 154, 136 

 Gleicheniaceae, 154 

 Gleichenites, 146 

 glochidia, 172, 173 

 glossopodium, 66, 88 

 Gradatae, 150 

 ground pines, 56 



HAPLOiD, 13 



Helminthostachys, 135 



Hemitelia, 161 



Heterophyllum, 83 



heterospory, 14, 17, 73, 80, 89, 100, 



105, 112, 123, 170, 172 

 Hierogramtna, 117, 118 

 Homoeophyllum, 83 

 homologous theory, 48, 180 

 homospory, 13 

 Hornea, see Horneophyton 

 Horneophyton, 30, 31, 180 

 horsetails, 106 

 Hydropterideae, 168 

 Hyenia, 95, g6, 178 

 Hyeniaceae, 94 

 Hyeniales, 95 

 Hymenophyllaceae, 155 

 Hymenophyllum, 153, 155 

 hypobasal, 46, 63 



iNDusiUM, 156, 158 

 Isoetaceae, 50 

 Isoetales, 76 

 Isoetes, 76, 78 



JACKET INITIAL, 46 



Klukia, 146 



LEAF GAPS, 18 



Lepidocarpon, 71, 73 

 Lepidodendraceae, 68 

 Lepidodendrales, 68 



