LEGUMINOS^ 



423 



The adjuki bean (Pkaseolus angularis) and mung bean {Phaseolus aureus) 

 are now grown to some extent in this country. 



. Key to Principal Species of Phaseolus 



Roots tuberous or much thickened, P. muUiflorus (scarlet runner bean). 

 Roots fibrous. 



Seeds flat or flat-oval in cross-section, P. lunatus (Sieva and Lima beans). 



Seeds mostly circular, but sometimes flat in cross-section, P. vulgaris 

 (kidney bean). 



PHASEOLUS MULTIFLORUS (Scarlet Ruimer Bean, Dutch Case- 

 knife Bean, Flowering Bean, or Painted Lady) 



These are perennials which usually have tall, climbing 

 stems and pinnately trifoHate leaves. The large and showy 

 flowers are scarlet (scarlet runner), or white (Dutch case- 



FiG. 177. — Pistil of flower of common bean (Phaseolus vulgaris). (After 

 Knuth.) 



knife), and form racemes. Pods are 3 to 6 inches long, and 

 curved; the seeds are large and plump, flattened or cylindric, 

 and vary in color. 



The scarlet runner form is also known as the flowering bean 

 or painted lady, and is much used as an ornamental vine. 

 The Dutch case-knife form of this species — one with white 



