118 PRACTICAL BOTANY. 



33. Petals numerous. Aquatics. Flowers solitary, 

 showy 24 



Petals 4, oblique, fugacious. Sepals 4, the 2 outer 

 i^ery broad and leaf -like. Low, rather shrubby plants. Styles 

 I, or 3-4. Ascyrum. 



34. Sepals 4, green outside, as long as the white petals, 

 ivhich are arranged in many rows at the base of the ovary. 

 5tigma many-rayed. Leaves orbicular, or sometimes kidney - 

 shaped, cordate to the centre, floating. Flower fragrant. 



Nympheea odorata, Ait. 



Sepals 4-6, of the same color as, and larger than the 

 rellow petals, which are arranged in 1 or 2 rows, and furrowed 

 It th''- back. Stigma deeply umbilicate. Leaves oval or 

 )blong, sagittate-cordate, floating or erect. ITuphar. 



35. (8.) Pistils more than 1, distinct, or not firmly cohe- 

 •ent 26 



Pistils many, completely coherent on an elongated 

 eceptacle, forming a dry, or fleshy cone in fruit. Trees or 

 hrubs with large, showy flowers. Anthers linear 47 



36. Pistils several, separately half sunk into cavities of 

 he large, top-shaped receptacle, forming acorn-shaped .nuts in 

 ruit. The numerous sepals and petals colored alike, in sev- 

 iralrows. Leaves orbicular, centrally peltate and cup- 

 haped. Flowers solitary, very large, yellow, on upright 

 capes. A huge aquatic. XTelumbium luteum, Willd. 



Pistils free, on the surface of the receptacle 27 



37. Leaves centrally peltate, large. Flowers small, dark 

 lurple. Aquatics 264 



Leaves not peltate 28 



38. Herbs ; 29 



Small trees. Sepals .3. Petals 6. Stamens in a 



;lc)l)ular mass. Pistils 3-7, longer than the stamens. Fruits 

 l>loiig, torulous, about 3 inches long and 1 inch thick, pulpy, 

 iflen 3 together. Flowers dull purple, axillary, solitary. 



Asimina triloba, Dunal. 



39. Ovaries 1-ovuled, forming achenia in fruit 30 



Ovaries more than 1-ovuled. Fruit a follicle or a 



- to 2-8eeded acine, or berry 38 



