518 BOTANICAL GAZETTE [jcxe 



5. Occasionally the primary shoot may be terminal to a leafy 

 branch. 



6. The secondary shoot consists of three pairs of decussate 

 scales and a terminal ovule. 



7. The ovule arises as a direct continuation of the axis, there 

 being nothing in its origin to indicate that it is a lateral structure. 



8. The archesporium arises from the hypoderm. The sporoge- 

 nous tissue consists of a considerable mass of cells, out of which 

 one or two may function as megaspore mother cells. 



9. The aril is regarded as the morphological fleshy layer of a 

 3-layered seed coat, delayed in appearance and physically separate 

 from the hard stony layer. 



10. The ovule receives its vascular supply direct from the axis 

 cylinder, contrary to any axillary nature, and in harmony with 

 the view that it is a cauline structure. 



The writer acknowledges obligations to Professors John M. 

 Coulter and Charles J. Chamberlain, under whom the study 

 of Taxus was begun. 



Juniata College 

 Huntingdon, Pa. 



LITERATURE CITED 



1. Aase, Hannah, Vascular anatomy of the megasporophylls of conifers. 

 Bot. Gaz. 60:277-313. figs. 196. 1915. 



2. Baillon, H., Recherches organogeniques sur la fleur femelle des Coniferes. 

 Ann. Sci. Nat. Bot. IV 14:186-199. pis. 12, 13. i860. 



3. Bertrand, C. E., Etude sur la teguments seminaux des vegetaux phanero- 

 games gymnospermes. Ann. Sci. Nat. Bot. VI 7:57-92. pis. 9-14. 1878. 



4. Blume, , Rumphia. 3:1847 (as given by Strasburger 35, and 



Radais 24). 



5. Braun, A., Uber das Individuum der Pflanze. 1853. 



6. Brown, R., Character and description of Kingia, a new genus of plants 

 found on the southwest coast of New Holland, with observations on the 

 structure of its unimpregnated ovule and the female flower in Cycadaceae 

 and Coniferae. Trans. Linn. Soc. 1825; Captain King's voyage, ap- 

 pendix b, Bot. pp. 529-559. London. 1826. 



7. Caspary, R., De Abietinearum floris feminei structure morphologica. 

 Ann. Sci. Nat. Bot. IX 14:200-209. i860. 



