454 



MORPHOLOGY OF GYMNOSPERMS 



34. Berry, E. W., Vascular flora of the Lower Cretaceous. Bot. Gaz. 53 : 



256. 1912. 



35. WiELAND, G. R., A study of some American fossil cycads. V. Further 

 notes on seed structures. Amer. Jour. Sci. IV. 32:133-155. figs. g. 

 1911. 



36. , Idem. VI. On the smaller flower buds of Cycadeoidea. Amer. 



Jour. Sci. 33: 73-91. figs. II. 191 2. 



37. , On the WiUiamsonian tribe. Amer. Jour. Sci. 32:433-466. figs. 



18. 191 1. 



38. Herzeeld, Stephanie, Die Bluten der Bennettitalen. Oesterr. Bot. 

 Zeitsch. 62:289-303. figs. 14. 1912. 



39. LiGNTER, O., Stomates des ecailles interseminales chez le Bennettites 

 Morieri. Bull. Soc. Bot. France 59:425-428. figs. 2. 1912. 



40. Schuster, J., Welmtsckia und Bennettitales. Bull. Soc. Linn. Normandie. 

 1912. 



41. Scott, D. H., The evolution of plants. London and New York. 191 2. 



42. Seward, A. C, A petrified Williamsonia from Scotland. Phil. Trans. 

 Roy. Soc. London B 302: 101-126. pis. g-12. 1912. 



43. Bancroft, Nellie, On some Indian Jurassic gymnosperms. Trans. 

 Linn. Soc. London B 8:69-86. pis. 7-g. 1913. 



44. Thomas, H. H., The fossil flora of the Cleveland District of Yorkshire. I. 

 The flora of the Marske Quarry. Quart. Jour. Geol. Soc. 69:223-251. 

 ph. 23-26. 1 9 13. 



45. , On some new and rare Jurassic plants from Yorkshire: the male 



flower of Williamsonia gigas. Proc. Cambridge Phil. Soc. 18:105-110. 

 pi. 6. figs. 2. 1915. 



46. , On Williamsoniella, a new type of Bennettitalean flower. Phil. 



Trans. Roy. Soc. London B 207:113-148. pis. 12-14. iP^S- 



47. WiELAND, G. R., American fossil cycads. Vol. II. Taxonomy. Car- 

 negie Inst. Washington, Publ. 34. 1916. 



48. — — — , La Flora Liasica de la Mixteca Alta. Bol. Inst. Geol. Mexico, 

 no. 31. 1916. 



CYCADALES 



76. Saxton, W. T., The development of the embryo of Encephalartos. Bot. 

 Gaz. 49: 13-18. pi. 2. 1910. 



77. Stopes, Marie C, Adventitious budding and branching in Cycas revoluta. 

 New Phytol. 9 : 234-241. figs. 7. 1910. 



78. Schuster, Julius, Bemerkungen iiber Podozamites. Ber. Deutsch. Bot. 

 GeseUs. 29:450-456. pi. 17. 1911. 



79. Chamberlain, C. J., The adult cycad trunk. Bot. Gaz. 52:81-104. 

 figs. 20. 1911. 



80. , Morphology of Ceratosamia. Bot. Gaz. 53: 1-19. pi. i. figs. 7. 



1912. 



