276 



MB. A. 8. HOEIVE — A CONTEIBUTION TO 



divergeant de deux branches stylaires laterales." The parietal placentae are terminal and 

 situated opposite one to tlie other. They are orientated laterally, not antero-posteriorly 

 as described by Baillon, but tliey may occupy either position in the species witb singly 

 situated flowers, according as the single flower represents a median or a lateral member 

 of the axillary groups of three present in G. elliptica. The styles should rest normally 

 at right angles to the placentae, but they are slightly twisted from this position in 

 G. elliptica. They rest in the plane of the placentae in G. VeitcJiii and G. longifolia. 



A single descending ovule with 



(( 



dorsal 



>> 



raphe develops from each placenta. It 



becomes ultimately tangentially orientated. The nucellus is invested by a single 



gument 



The writer has been unable to follow the development of the nucellus, owing to the 



lack of suitable flow 



The first material examined consisted of fruits of the hybrid 



G. Thuretli. Later, fertile fruits of G. elliptica w^ere obtained. Pinally, some flowers 

 of this species were examined and the ovules removed and microtomed. These were in 

 an advanced stage of development. The embryo-sacs were considerably elongated and 

 sterile, having escaped fertilization. The basal part of the nucellus consisted of about 



five rows of cells 

 to that of Comiu 



that, in all probability, the young nucellus is comparable in bulk 



Text-Gg. 8 



Diagrams showing the course of the vascular tissue in the female flower of Garrya elliptica 



A, young fruit ; B-F, flower. (For abbreviatious see p. 308.) 



Vascular Structure. 



The vascular tissue of the pedicel consists of two opposite simple bundles [d) and two 

 groups of small strands, which alternate with the former. The small bundles of each 



