PAPILIONACE^: 



317 



practically all the 

 family have a 

 flower very like 

 that of CROTO- 

 LARIA or the Pea, 

 the standard 

 erect and as large 

 or larger than the 

 wings or keel. 



In other re- 

 spects there is a 

 certain amount of 

 variation be- 

 tween the genera. 

 Some like CRO- 

 TALARIA have 

 simple or digi- 

 tately three- 

 foliate leaves, 

 and monadelph- 

 ous stamens. In 

 others, like the 

 common Indigo (iNDiGOFERA TINCTORIA, L.) the sta- 

 mens are diadelphous and the leaves odd-pinnate (fig. 9 

 another species of INDIGOFERA). Then there are some 

 which have the same sort of flowers and leaves, but 

 the pods are jointed, and break between the seeds into 

 one-seeded pieces, but don't dehisce in the ordinary 

 sense of the word. But the largest group consists of 

 those which, like Erythrina, have pinnately three-foliate 

 leaves, and are for the most part climbers. This is the 

 Bean or PHASEOLUS group. The Pea (PISUM) belongs 



FIG. 75 

 CROTOLARIA JUNCEA, L. 



