DICOTYLEDONES. x 



14. Caryophyllacea. Pet. 5 or 4. S tarn. 8 10, rarely 

 5 or 4. Caps. 1-celled with a free central placenta. L. 

 opposite 50 



15. Malvacece. Pet. 5, twisted. Stam. many, mona- 

 delphous. Anth. 1-celled. Ovary of several carpels 

 round a common axis. L. alternate 69 



16. Tiliacece. Pet. 5. Stam. many, free or polyadel- 

 phous. Anth. 2-celled. Ovary 5-celled. Trees with 

 alternate leaves 71 



17. Hypericacece. Pet. 5, twisted. Stam. many, in 

 34 bundles. Anth. 2-celled 72 



18. Aceracea. Pet. 5 (in our plants), imbricate. 

 Stam. distinct, generally 8, on an hypogynous disk. Fr. 



of 2, winged, 1-seeded nuts. Trees with opposite leaves. 75 



19. Geraniacece. Pet. 6, twisted. Stam. monadel- 

 phous. Fr. of 5 carpels cohering together with their styles 

 round a long beaked persistent axis, from which they 

 ultimately separate with elasticity 75 



20. Balsaminacece. Pet. 5, irregular, the lateral united 

 in pairs, imbricate. Stam. 5. Anth. slightly cohering. 



Fr. of 5 carpels with elastic valves 79 



21. Oxalidacece. Pet. 5, twisted. Stam. 10. Anth. 

 free. Caps. 5-valved. L. usually ternate 80 



22. Linacece. Pet. 4 5, twisted. Stam. 45, with 

 intermediate teeth, from an hypogynous ring. Carp, se- 

 parating but leaving no central axis 81 



(Ord. 48. Aquifoliacea with sep. free, cor. 4 5-pa,rted, 

 stam. 4 5, an evergreen tree, is sometimes placed here.). 282 



(Ord. 71. Empetracece with dioecious flowers, a heath- 

 like evergreen shrub, is sometimes placed here.) 366 



Division 2. CALYCIFLOE^E. 



* Stam. and petals mostly per igy nous. 



23. Celastracece. Fl. greenish. Stam. alternating with 

 the petals and inserted with them in a fleshy disk sur- 

 rounding the ovary. Trees or shrubs 82 



