PL1TES. 





Fig. 3. Portion of the next serial seotion of the 



1 



apical cap of nucellar ^no^ZZ^ c il 1 * F" * **** 

 nucleus ... J ' emDr - V0 & eni ° <*U, a ud embryo-Mo, with iu 



Fig. 4. Portion of another ovary 

 Fig. 5. Ditto ditto 



x 3 ) 

 x 600 



Fig. 6. Ditto ditto showing atMoliTO«nf *i V ' '• ' ' " ' * 3: ! 



*# A. -~*~i _ _, - ,? g attachment of embryogenic cell to the under «rf« 



Fig. 7 



of the apical cap of nucellar parenchj 



r ma. 



Fig. 8 



Portion of the base of an ovary, showing basal thickenings of nucellar enicW. a 

 parenchyma from a female flower in a recc^l* ^.l^T* **""» "* 



receptacle ready for inseofc . ^ o-* 



Ovule from a female flower of a receptacle ready for insect,, shown* ra*phe Lj^ 

 and nucellar epidermis and parenchyma. „•«, w.i „ J , . J .. 1 l X? pl ^ mui,at 



with picrocarmine 



parenchyma, with basal and apical thicknung,; ^iaS 



Fig. 9. Ovule from a female flower in a receptacle to which fig-insect had recent It 



gained mom, 



• ■ 



showing development of the embryogenic cell and the presence of secundary uu 

 in the embryo-sac 



Fig. 10. Embryo-sac and embryogenic cell of the same ovule [ 



Fig. 11. Embryogenic cell and portion ef apical cap of nucellar ^ 'showing b ial 



stage of evolution of the embryogenic cell subsequent to the access of insects Co 

 receptacle 



Fig. 12. Commencing evolution of the pro-embryo within the enlarged embryogenio cell 



Fig. 13. Upper part of the embryo-sac of a flower from a receptacle shortly after access of insects, 



showing the mark on the apex of the sac corresponding with the unl, surfsosof 

 the enlarging embryogenic cell ; also the persistent primary nn !eus 



Fig. 14. Portion of vertical section of the apex of the ovary of a female flower from a reci aclo 



shortly after the access of insects, showing the pro-embryo and the embryogenic cell 

 with its processes, and its attachment to the under surface of he apical oap f 

 nucellar parenchyma ; stained with logwood 



Fig. 15. Ditto ditto ditto ditto 



Fig. 16. Portion of vertical section of the base of an ovary of a female flower from a receptacle 



x 119 



x 



x 990 



x 690 



x 



x :{70 

 x 690 



x 37 



shortly after access of insects, showing peculiar outgrowth of nucellar parenchyma x 3 

 Fig. 17. Vertical section through ovarian wall of a true female flower from a receptacle ready far 



insects ; stained with picrocarmine 



Fig. 18. Vertical section through the wall of a ripe achene ; stained with gentian violet . . . x 370 



Fig. 19. External epidermis of ovary of a mature female flower x ;j70 



Fig. 20. Hypodermal cells of ovary of mature female flower ; stained with gentian violet ... x J 60 



Fig. 21. Portion of vertical section of the base of an ovule of a female flower from a receptacle- 



shortly after access of insects ; stained with picrocarmine 



Fig. 22. Vertical section through the ovarian wall of a gall-flower from a receptacle ready for 



insects « 



x 



x 37 





W. H. D'C.-Ree. No. 11921J-350-27-4-89 



