PAPILIONACEOUS FLOWERS 



139 



222. Papilionaceous flowers. 

 Sweet pea. 



groups, 

 would 

 be called 



monadelphous, and this arrange- 

 ment occurs in some members of 

 the Leguminosas or pea family. 



278. MALLOW FLOWERS. The 

 flowers of the mallow family are 

 well represented in single holly- 

 hocks (Figs. 206, 207) and in the 

 little plant (Fig. 224) known as 

 " cheeses." The peculiar structure 

 is the column formed by the united 

 filaments, the inclosed styles, and 

 the ring of ovaries at the bottom 

 of the style -tube. The flower is 

 5-merous. Count the ovaries. 

 They sit on the torus, but are 



pea shape are said to be papil- 

 ionaceous (Latin papilio, a but- 

 terfly). 



277. Flowers of the pea and 

 its kind have a pecu- 

 liar arrangement of 

 stamens. The sta- 

 mens are 10, of which 

 9 are united into a 

 tube which incloses 

 the pistil. The tenth 

 stamen lies on the upper edge 

 of the pistil. The remains of 

 these stamens are seen in Fig. 

 190. The stamens are said to 

 be diadelphous ( " in two brother- 

 hoods") when united into two 

 Stamens in one group 



223. 



Cassia flower, 

 showing the 

 s eparate 

 keel petals. 



ng 



plant to which the circle of 

 fruits, a, gives the names 

 " cheeses" and " shirt button 

 plant." 



