Index 



Page numbers in italic refer to illustrations 



Acitheca, 128, 129 

 acrostichoid condition, 150 

 AcrosHchum, 164 

 'Adder's tongue' fern, 135, 137 

 Adiantaceae, 166 

 Adiantum, 153, 156, 167, 181 

 advancement index, 151 

 Aldanophyton, 51, 53, 179 

 Alsophila, 161 

 Alsophilites, 161 



alternation of generations, 13, 182 

 Anemia, 153, 154 

 Angiopteridaceae, 127 

 Angiopteris, 128, 130 

 angle meristem, 84, 87 

 Ankyropteris , 118, 121 

 Annular ia, 102, 104 

 annulus, 144, 149, 153 

 Anogtamma, 167 

 antheridium, 13 

 antherozoid, 13 

 antithetic theory, 48, 180 

 aphlebiae, 117, 118, 123 

 apical meristem, 21, 57, 87 

 apogamy, 180 

 apospory, 181 

 Archaeocalamites, loi, 102 

 Archaeopteris, 175 

 archegonium, 13, 45 

 archesporial cells, 60 

 Arthropitys, 104 

 Arthrostigma, 52 



Articulatae (= Sphenopsida), 94 

 Asplenioideae, 165 

 Aspleniuni, 156, 165 

 Asterocalamitaceae, loi 

 Asterocalamites, loi, 102, 178 

 Asterophyllites, 102, 104 

 Asterotheca, 127, 128 

 Asterothecaceae, 127 

 Asteroxylaceae, 28 

 Asteroxylon, 34, 35, 179 

 Athyrioideae, 165 



Athyrium, 156, 165 

 Austroclepis, 120 

 Azolla, 171, 173 

 Azollaceae, 171 



Baragwanathia, 51, 179 

 Blechnoideae, 166 

 Blechnum, 156, 166 

 Bothrodendraceae, 68 

 Bothrodendron, 74 

 Botrychioxylon, 122 

 Botrychium, 135, 137 

 Botryopteridaceae, 124 

 Botryopteris, 124, 125, 178 

 Bowmanites, g6, 99 

 bulbils, 54 



CALAMITACEAE, lOI 



Calamitales, loi 



Calamites, 102, 103 



Calamophytaceae, 94 



Calamophyton, 95, g6, 178 



Calamostachys, 102, 105 



Callixylon, 175 



cambium, 22, 69, 76, 83, 95, 103, 



117, 136 

 Camptopteris , 160 

 Cardiomanes, 157 

 carinal canals, 98, loi, 104, 109 

 casts, 22, 104 

 Ceratopteris, 167 

 Cheilanthes, 167 

 Cheirostrobaceae, 94 

 Cheirostrobus, 96, 99 

 Christens enia, 128, 130 

 Christenseniaceae, 127 

 Cibotium, 158 



circinate vernation, 34, 35, 131, 143 

 circummeduUary strands, 73 

 Cladoxylaceae, 115 

 Cladoxylales, 116 

 Cladoxylon, 116, 118, 178 

 classification, 27 



189 



