4^;4 



PHANEROGAMS. 



I^abiatae and Borragineae. Fig. 359 shows that the ovary is formed of two coherent 

 carpels, the margins of which (I-IV) projecting inwards form a right and a left 

 placenta {pi)', on each of these placentae which correspond to the margins of the 

 carpels a posterior and an anterior ovule are produced, but an outgrowth from 



Fir,. 35?.— Ripe fruit oi Dictamnns Fraxinella : the anterior carpel has been removed and tlie tivn lateral 

 ones opened ; g gynobasic style (natural size). 



the mid-rib of the carpel (/F, VI, x) inserts itself between the two ovules belong- 

 ing to each loculus, dividing it into two one-seeded lobes. Since at a sub- 

 sequent period the outer part of the wall of each of the four lobes bulges strongly 

 outwards and upwards {B), the separation of the bicarpellary ovary into four 

 separate parts becomes still more distinct ; and finally they completely separate as 



Fig. 359. — / — W/ stages of development of the ovary oi Phlornis pKngens, Vm longitudinal, the rest in horizontal section ; 

 A a gj'njeceum seen from without ready for fertilisation ; B the same in longitudinal section, the lines it n, oo correspond to the 

 horizontal sections I'l and V'll ; pi the placenta, x the spurious dissepiment, /"loculi, sk ovules, <: wall of the carpel, t disc, 

 g stj'le, n stigma. 



one-seeded lobes of the fruit ; while in Borragineae the separation is still more 

 complete. The division of the five loculi of the ovary of Linum into ten by spurious 

 dissepiments is not so perfect, the projections from the centres of the carpels not 

 reaching the central axis of the ovary. 



Before passing to the consideration of ovaries with axile placentation, it should 



