ARTIFICIAL KEY. 



Acanthace» 



(p. 445) 



Tecoma (p. 444) 



Bignoniaceas 



(p. 442) 



Vitex (p. 478) 



Araceaa (p. 549) 



Shrubs or herbs. Leaves all opposite. 

 Seeds not winged .... 



Shrab with orange-scarlet flowers. 

 Seeds winged .... 



b. Leaves 1-3-pinnate. Seeds winged in 

 long linear capsules .... 



c. Leaves digitate .... 

 Monocotyledons. 



Stout climbers with aerial roots, or 

 spinous marsh herbs. St. 4-6 • 



Stamens or Anthers 5. 



(Small alternating staminodes sometimes present. Vide 

 also Ammannia st. 4-5 not repeated here, and Salix st. 4-10 

 without perianth). 



Dicotyledons. 



I. Perianth simple, or if 2-seriate not 

 distinctly differentiated into calyx 

 and corolla. {Vide also Uinbelliferas 

 under II in which the sepals are often 

 reduced or absent and some Rham- 

 naceaa in which the petals are exceed- 

 ingly minute). 



a. Leaves simple. 



A. FIb. 2-sexual. Ovary superior (St. 



perigynous in Polygonaceae). 

 Perianth sepaloid or petaloid. Herbs 



with ochreous stipules 



Perianth fleshy. Climber with fleshy 

 stems . t • • . 



PolygouaceaB 



(p. 383) 



Basella (p. 382.^ 



Perianth petaloid. Fls. yellowish 

 Climbing or sub-erect shrubs. 



103 



