Xi CLASSES, DIVISIONS, AND OKDEES. 



24. RhamnacecB. Fl. greenish. Stam. opposite the 

 petals and inserted with them in a disk lining the calyx. 

 Shrubs ... 83 



25. Leguminosce. Fl. coloured, irregular, papiliona- 

 ceous ; odd petal superior and external. Stam. 10, di- or 

 rarely monadelphous. Fruit a legume 83 



26. JRosacece. Fl. regular ; odd petal inferior. Stam. 

 usually many, perigynous. Carp, distinct when young, 

 and superior, or connate, or adnate to calyx (falsely syn- 

 carpous and inferior) 104 



27. Lythracece. Cal. tubular. Pet. and stam. peri- 

 gynous. Ovary free, syncarpous. Style 1 141 



28. Tamariscacea. Sep. slightly connate below. Pet. 

 perigynous. Stam. from the edge of hypogynous ring. 

 Ovary free. Styles 3. Caps. 3-valved, loculicidal. 

 Shrub with narrow spurred leaves 142 



29. Onagracece. Cal. adnate to ovary, with 2 4 lobes. 

 Pet. 24. Stam. 2, 4, or 8. Style 1 ". 143 



30. Haloragacece. Cal. adnate to ovary, with a minute 

 limb. Pet. minute or 0. Stam. 1 or 8. Styles 1 4. 

 Aquatic. Fl. usually unisexual. (Callitriche, p. 371, is 

 often placed here.) 147 



31. CucurbitacecB. Dioecious (in our plant). Cal.-tube 

 adnate to ovary. Stain. 5, resembling 3 by cohesion. 

 Climbing by tendrils 148 



32. Portulacea. Cal.-tube short ; sep. 2. Pet. connate 

 or free. Stam. 3 5, free. Ovary 1-celled ; placenta free, 

 central 148 



33. Paronychiacece. Cal. 5-parted. Pet. minute re- 

 sembling barren filaments, or none. Stam. 5, or rarely 



10. Ovary free 149 



34. Crassulacea. Sep. and pet. each 5, rarely 3 or 4, 

 or 10 12. Pet. free or connate at the base. Stam. as 

 many or twice as many as petals. Carp, free, same number 



as petals. Fr. of follicles 151 



35. Ribesiacea. Sep., pet., and stam. 4 5. Ovary in- 

 ferior; placentas parietal. Style 2 4-clef t. Fr. a berry. 154 



36. Saxifragacea. Cal. 4 5-cleft. Pet. 4, 5, or 0, 

 perigynous. Ovary of 2 carpels combined below. Styles 

 distinct . 155 



