RELIQUIAE TREUBIANAE 11. 



THE DEVELOPMENT OF THE OVULE AND EMBRYOSAC 



OF PITTOSPORUM RAMTFLORUM ZOLL. AND 



PITTOSPORUM TIMORENSE BLCJME 



BY 



G. BREMER. 



(With Plate XXIII— XXVT.) 



The following account is the result of a research for which 

 the material was procured to me by Prof. Di\ F. A. F. C. 

 Went, who kindly took an interest in my work and who gave 

 me all the advice I needed. My sincere thanks for his valuable 

 and friendly help. 



The genus Pittosporum belongs to the famil}'' of Pittosporaceae, 

 which are classed with Rosales. The flower of Pittosporum has 

 five free sepals, five petals, free or grown together at the bot- 

 tom, five stamens and a gynaecium with two rows of ovules 

 at each of the placenta's. The ovule is anatropous and possesses 

 one integument. 



Two species of Pittosporum were examined : Pittosporum rami- 

 florum and Pittosporum timorense. The material of the first species 

 was partially collected by Prof. M. Treob, he had not yet exa- 

 mined them however. Another part of this material and that 

 of Pittosporum timorense was collected by Dr. J. Kdyper during 

 his stay at Buitenzorg. 



The development of the ovule of Pittosporum ramiflorum is 

 not the same as that of Pittosporum timorense. Therefore 1 shall 

 first describe Pittosporum ramiflorum. 



