THE MORPHOLOGY AND AFFINITIES OF GNETUM 1 83 
Fig. 39. G. sp. jj. Mature embryo-sac and small abortive one. X 75. 
Fig. 40. G. gnenion. Top of embryo-sac and pollen tube, e., egg; tube 
nucleus; m., male nuclei. X 400. 
Fig. 41. G. gnemon. Whole embryo-sac with entering pollen tubes. Lettering 
as before. X 100. 
Fig. 42. G. gnemon. Top of embryo-sac with entering pollen tube. X 400. 
Fig. 43. G. sp. jj. Embryo-sac with entering pollen tube showing nuclei 
all dividing, p.t., pollen tube; s.a., abortive sac; d., dividing nucleus; e., egg. 
X 300. 
Fig. 44. G. gnemon. Embryo-sac into which pollen tube has penetrated some 
distance. X 300. 
Fig. 45. G. sp. 33. Embryo-sac just prior to fertilization. egg; m., male 
nuclei; end., cells of endosperm. X 400. 
Fig. 46. G. gnemon. Nucleus of female gametophyte. X 1200. 
Fig. 47. G. gnemon. Egg nucleus. X 1200. 
Fig. 48. G.sp.jj. Male nucleus. X 1200. 
Plate V 
Fig. 49. G. sp. jj. Embryo-sac at fertilization time. /., tube nucleus; end., 
endosperm; s.a., abortive sac. X 215. 
Fig. 50. G. sp. jj. Sexual nuclei in contact, e., egg; m., male cells. X 400. 
Fig. 51. G. sp. jj. Sac with fertilized egg. f.e., fertilized eggs; end., endo- 
sperm. X 400. 
Fig. 52. G. sp. jj. Sac with fertilized egg. Earlier stage, showing many 
free nuclei. X 300. 
Fig. 53. G. gnemofi. Whole embryo-sac with fertilized egg. /. e., fert. egg; 
p., mass of protoplasm and nuclei surrounding egg; end., endosperm; n., free nuclei. 
X 100. 
Fig. 54. G. gnemon. Fertilized egg surrounded by mass of protoplasm and 
nuclei. X 400. 
Plate YI 
Fig. 55. G. gnemon. Base of embryo-sac showing beginning of endosperm 
formation, w., newly formed wall. X 300. 
Fig. 56. G. g?iemon. Multi-nucleate compartments in endosperm formation. 
X 300. 
Fig. 57. G. gnemon. Endosperm with partly uninucleate and partly multi- 
nucleate compartments. X 300. 
Fig. 58. G. gnemon. Endosperm with uninucleate cells only. A slight 
amount of growth has taken place by division. X 300. 
Fig. 59. G. gnemon. Whole embryo-sac with young endosperm, p.e., pro- 
embryo. X 100. 
Fig. 60. G. sp. jj. Whole embryo-sac with young endosperm, s.a., abortive 
embryo-sac; n., free nuclei; p.t., pollen tube; etid., endosperm. X 100. 
Fig. 61. G. sp. jj. Transverse section of embryo-sac with multinucleate 
endosperm. X 300. 
Fig. 62. G. sp. jj. Wall formation in endosperm. X 550. 
