xvi LIST OF ILLUSTRATIONS. 



FIGURE PAGE 



14. Anatomy of the floral receptacle of Ivy, showing the multi- 



plication and differentiation of the cords, etc. ... ... 68 



15. Anatomy of the floral receptacle of Campanula medium^ 



showing the distribution of the cords, etc. (see fig. 8, p. 43) 71 



16. Origin and development of the ovule in Bef a ... ... ... 73 



17. Carpels of Acer, showing the thickened bases, preparatory for 



ovules 75 



18. A separate carpel of Primula sinensis, with marginal ovules 



and a " heel-like " process, the origin of the free central 

 placenta ... ... ... ... ... ... ... ... 76 



19. Anatomy of the floral receptacles of Lysimachia and Primula, 



showing the cords of five carpels ... ... ... ... 77 



20. Echium, showing declinate stamens and protandrous condition 82 



21. Ovary, stamens, and stigmas of Aristolochia ... ... ... 83 



22. Vertical sections of buds of Pyrus and Cotoneaster, showing 



degrees of adhesion or undifferentiated condition between 



the ovary and receptacular tube ... ... ... ... 90 



23. Orchis Morio (?), with arrest of pistil, the receptacular tube 



represented by a rod-like pedicel. Two anthers are deve- 

 loped instead of one (a) ... ... ... ... ... 92 



24. Receptacular tube of Rose, bearing a leaf and a stipular sepal 93 



25. Vertical section of the receptacular tube of Hawthorn, with 



supernumerary carpels arising from the summit ... ... 93 



26. Leaves of Pear with hypertrophied and sub-fasciate petioles 94 



27. Fuchsia with foliaceous sepals, partly detached from the ovary 94 



28. Anatomy of the receptacular tube of Prunus, showing the 



origin of the petaline and staminal cords ... ... ... 95 



29. Part of the receptacular tube of Cherry, showing the distri- 



bution of cords in the sepaline lobes 97 



30. Anatomy of inferior ovary of Alstrcemeria, showing the junc- 



tion between the ovary and the tube ... ... ... 97 



31. Flower of Duvernoia, showing its adaptability for intercrossing 107 



32. Flower of Calceolaria, showing thickened ridges, etc., and 



adaptability for intercrossing ... ... ... ... ... 109 



33. Flower of Bictamnus, showing declinate stamens and displace- 



ment of petals 110 



34. Flower of Epilohium angustifolium, showing dependent sta- 



mens and displacement of petals ... ... ... ... Ill 



