41 



Calyx of three or two sepals, imbricate in the bud. Stamens two 



or three. Style short. EMPETRACE.E. 



Calyx four or five cleft, valvate in the bud. Stamens four or five. 



RHAMNAOE.E. p. 86. 



91. Stem jointed. Stamen one. Perianth two or three leaved. Stig- 

 mas two. Trees or shrubs without true leaves, but with numer- 

 ous leaf-like branches or phyllodes. CASUARINACE.E. 



Stem jointed. Stamens several. Styles two or more. Ovule single. 

 Leaves mostly alternate. POLYGONACE.E. p. 287. 



Stem not jointed. 



Stamens numerous. Ovules many. BIXACE^;. 

 Stamens less than twenty. 



Stamens united. Duecious. Lobes of the perianth valvate in the 

 bud. Ovule single. Seeds with a conspicuous, fleshy aril. 



MYRISTICACEJJ. 

 Stamens distinct. 



Ovules many. Placentae parietal. Seeds with a fleshy aril. Flow- 

 ers regular, showy. PASSIFLORACEJE. p. 157. 

 Ovule single, or rarely more than one. 



Styles two to five. Stamens five to eight. Ovule campylotropous. 



Herbs of tropical America. PHYTOLACCACE.K. 

 Style single. Stamens four or five. 



Perianth tubular, colored. Stamens inserted in the tube or throat 

 of the perianth. Ovule anatropous. Leaves opposite, simple. 



THYMELEACE.E. p. 291. 



Perianth four or five parted or five leaved, green. Stamens inserted 

 in the base of the perianth. Ovule anthotropous. 



URTICACEJE. p. 296. 



92. Flowers perfect, having both stamens and pistils. 93 

 Flowers imperfect. 



Ovaries four or five, distinct, with two ovules in each. Calyx four 

 or five parted. Stamens eight or ten. Leaves opposite or in whorls. 

 Trees. XANTUOXYLACE^. p. 82. 



