INDEX 



463 



Embryonal tubes, Pinaceae 29s, sg6, 



Encephalartos, archegonium IJ5; mega- 

 sporophyll 124, 131 



Endarch 10, 11 



Endosperm, see female gametophyte 



Ephedra, archegonium 386; embryo 3g4, 

 395, 397; female gametophyte 377, 

 384; fertilization jpz; habit 364; 

 male gametophyte jpo, jpi; mega- 

 spore 38s; ovule 377; strobilus 372 



Euanthostrobilus 74 



Evolutionary tendencies 406 



Exarch 10, 11 



F 



Femak gametophyte, Cordaitales I7g; 

 Cycadales 132; Cycadofihcales 48; 

 evolutionary tendencies 419; Gink- 

 goales 203, 204, zo8; Gnetales 37s, 

 377', 379, 3S2, 3S3, 3S4; Pinaceae 259, 

 260, 261; Taxaceae 329, 330, 337 



Ferns, paleozoic 52; relationship to 

 Cycadofilicales 51 



Fertilization, Cycadales 148, 750; evolu- 

 tionary ^ tendencies 423; Ginkgoales 

 209; Gnetales 39?, 392; Pinaceae 284, 

 286, 287; Taxaceae 344, 345 



Flower, Gnetales 371, 372, 373, 37s, 377, 

 380 



G 



Gametophytes, see male gametophyte 

 and female gametophyte 



Ginkgo, archegonium 208, 2ii; cotyle- 

 don section 188; embryo 211, 212, 

 213; female gametophyte 204, 208; 

 habit 186; leaf 187, igo, igg; male 

 gametophyte 207; ovulate strobilus 

 igS, 196, ig7, 19S; ovule ipj, ig6, 

 jg7, igS, 200, 201, 202; peduncle 

 section zpp; seedling igo; staminate 

 strobilus igi, ig2, ig3 



Ginkgoales, archegonium 205, 208, 211; 

 distribution 215; embryo 210, 211, 

 212, 213; female gametophyte 203, 

 204, 208; history 215; leaf 187, i8g, 

 igo, igg; male gametophyte 206, 207; 

 megasporangium 194, 200, 201, 202; 



megaspore membrane 204, 205; micro- 

 sporangium igi, ig2, ig3; microsporo- 

 phyll igi, ig2, ig3; peduncle section 

 igg; relationship 216; seedling 188, 

 igo; strobilus 190, igi, igz, ig3, igs, 

 ig6, ig7, ig8; vascular anatomy 187; 

 vegetative organs 185 



Gleichenia, protostele 5 



Gnetales 363; archegonium 385, 386; 

 chromosomes 384; distribution 402; 

 embryo 393, jp^, jpj, 3g7, 3g8, 400; 

 female gametophyte 375, 377, 370, 

 382, 383, 384; fertilization 391, jpa; 

 history 402; leaf 369; male gameto- 

 phyte 389, 3go, 3gi; megasporangium 

 37S, 376, 377; megaspore 384; ovule 

 J7<5, 377, 380, 382; microsporangium 

 371; relationship 402; seedling 3gg; 

 stamen 380; strobilus 370, 372, 374, 



37 5, 3i7^, J^o» vascular anatomy 366; 

 vegetative organs 364 



Gnetopsis 37 



Gnetum, embryo 400; female game- 

 tophyte 375, 382, 383; flower 375; 

 habit 367, 370; megasporangium 37 y, 

 ovule 376, 380, 382; strobilus 37s, 



376, 380 



H 

 Hemiangiosperms 74 

 Heterangium 12 



J 



Juniperus, fertilization 287; proembryo 

 2g4 



K 



Kaloxylon 14 



Lagenostoma 31, 32, 33, 34, 35; micro- 

 spore 4g 



Larix, megasporangium 2;;; strobilus 

 246 



Leaf gap g ; Adiantum 10 



Leaf, Bennettitales 71; Cordaitales 168, 

 i6g, 170; Cycadales 108, log, no; 

 Cycadofilicales i, 21, 22, 24; evolu- 

 tionary tendencies 412; Ginkgoales 

 187, i8g, igo; Gnetales 369, 370; 



