452 MORPHOLOGY OF GYMNOSPERMS 



WoRSDELL, W. C, Anatomy of stems of Macrozamia compared with that of other 



genera of Cycadeae. Annals of Botany 10:601-620. ph. 27, 28. 1896. 

 , On transfusion tissue; its origin and function in the leaves of gymnosper- 



mous plants. Trans. Linn. Soc. Bot. II. 5:301-319. pis. 23-26. 1897. 

 , The structure of the female "flower" in Coniferae. Annals of Botany 



14:39-82. 1900. 

 , The anatomical structure of Bowenia spectahilis. Annals of Botany 



14:159, 160. 1900. 

 , The vascular structure of the ovule of Cephalotaxus. Annals of Botany 



14:317.318. 1900. 

 , The affinities of the mesozoic fossil Bennettites Gihsonianus. Annals of 



Botany 14:717-721. 1900. 

 , The evolution of the vascular tissue of plants. Bot. Gazette 34:216- 



223. jigs. 7. 1902. 

 , The structure and origin of the Cycadaceae. Annals of Botany 20: 129- 



159- fis^- 17- 190S. 



, "The origin of gymnosperms"; a discussion at the Linnean Society. 



New Phytologist 5 : 68-76, 141-148. igo6. 

 WoYciCKi, Z., (On fertilization in Coniferae). pp. 57. pis. 2. 1899. (Russian) 

 Young, Mary S., The male gametophyte of Dacrydium. Bot. Gazette 44: i8g- 



196. pi. ig. 1907. 

 , The morphology of the Podocarpineae. Bot. Gazette 50:81-100. pis. 



4-6. 1910. 

 Z.4CH, Franz, Studie iiber- Phagocytose in den WurzelknoUchen der Cycadeen. 



Oesterreich. Bot. Zeitsch. 60:49-55. pi. 2. 1910. 

 Zeiller, R., Elements de palaeobotanique. igoo. 

 , et Fliche, p., D^couverte de strobiles de Sequoia et de Pin dans le Port- 



landien des environs de Boulogne-sur-Mer. Compt. Rend. Acad. Sci. 



Paris 137:1020-1022. 1903. 

 (with Fliche, P.), Note sur un florule portlandienne des environs de Bou- 

 logne-sur-Mer. Bull. Soc. Geol. France IV. 4:787-812. 1904. 

 , Une nouvelle classe de Gymnospermes: les Pteridosperm^es. Rev.. 



Gen. Sci. 16:718-727. figs.}: 1905. 



