XXXVUl CLASSES, DIVISIONS, AND ORDERS. 



24. Rhamnacece. FI. greenisk. Stam. opposite tlie 

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

 —Shrubs 78 



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

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

 rarely monadelphous. Fruit a legume 78 



26. RosacecB. 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) i 9' 



27. Lythracea. Oal. tubular. Pet. and stam. peri- 

 gynous. Ovary free, synoarpous. Style 1 132 



28. Tamariscacece. 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 , 182 



29. OnagracecB. Cal. adnate to ovary, with 2 — 4 lobes. 



Pet. 2— 4. Stam. 2, 4, or 8. Style 1 133 



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

 limb. Pet. minute or 0. Scam. 1 or 8. Styles 1 — 4. — ■ 

 Aquatic. PL usually unisexual. {CaUitriche, p. 318, is 

 often placed here.) 137 



31. Oucurbitacecs. Dioecious (in our plant), Cal.-tube 

 adnate to ovary. Stam. 5, resembling 3 by cohesion.^ 

 Climbing by tendrils 188 



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

 or free. Stam. 3— 5, free. Ovary l-eeUed; placenta free, 

 central 138 



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

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



10. Ovary free 139 



34. Crassulacem. 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 141 



S5. RibesiacecB. Sep., pet., and stam. 4 — 5. Ovary in- 

 ferior ; placentas parietal. Style 2 — 4-cleft. Fr. a berry 144 



36. Saxifragacece. Cal. 4 — 5-cleft Pet. 4, 6, or 0, 

 perigynous. Ovary of 2 carpels combined below. Styles 

 distinct 145 



