366 THE PLANT PHYLA 



tropical trees. 162, Sapotaceae; 163, 

 Ebenaceae; 164, Symplocaceae; 165, 

 Styracaceae. 



Super-Order AXIFLOR AE-GAMOPETALAE-DICARPELLATAE . 

 Carpels typically two, united; petals 

 united. 



Order POLEMONIALES. Corolla regular; stamens as many 

 as the corolla lobes; leaves mostly 

 alternate. 



Family 166. Polemoniaceae. Phloxes. Mostly herbs 

 with alternate or opposite leaves; 

 pistil tricarpellary. Phlox Gilia, Pol- 

 emonium. 



Family 167. Convolvulaceae. Morning Glories. Most- 

 ly herbs and shrubs with alternate 

 leaves; pistil mostly bicarpellary. 

 Convolvulus, Ipomoea, Evolvulus, 

 Cuscuta. 



Family 168. Hydrophyllaceae. Soft herbs; pistil bi- 

 carpellary. Hy drop hy Hum, P h a - 

 celia. 



Family 169. Borraginaceae. Forget-me-nots. Herbs, 

 shrubs and trees; pistil bicarpellary, 

 4-celled. Heliotropium, Borrago, 

 Myosotis, Mertensia, Lithospermum. 



Family 170. Nolanaceae. 



Family 171. Solanaceae. Nightshades. Mostly herbs 

 and shrubs; pistil bicarpellary, mostly 

 2-celled. Solanum, Atropa, Physalis, 

 Capsicum, Datura, Nicotiana, Pe- 

 tunia. 



Order GENTIAN ALES. Corolla regular; stamens as many as 

 the corolla lobes; leaves opposite. 



Family 172. Oleaceae. Olives. Mostly shrubs and 

 trees; stamens 2 or 4; ovary 2-celled. 

 Olea, Syringa, Jasminum, Fraxinus. 



Family 173. Salvadoraceae; 174, Loganiaceae. 



Family 175. Gentianaceae. Mostly herbs with limpid 

 juice; ovary usually 1-celled. Gen- 

 tiana, Eustoma, Menyanthes. 



Family 176. Apocynaceae. Trees, shrubs and herbs 



