128 



WEEDS OF THE FARM AND GARDEN 



Fig. 70. Ir- 

 regular flower 

 of aconite or 

 Monk's hood. 

 (Ada Hayden.) 



when raised on a narrow tube and diverg- 

 ing at right angles, like some species of the 

 phlox family, such as gilia; bell-shaped or 

 campanulate, with a broad and short tube 

 like a bell, as in the common harebell ; 

 funnel-shaped or funnel-form, like the flow- 

 ers of the common morning glory ; tubular, 

 when prolonged into a tube, like the trum- 

 pet honeysuckle ; in 

 some cases there are 

 little projections from 

 the corolla, known as 

 claws, as in the com- 

 mon soapwort ; the 

 conspicuous marginal 

 flowers of the sunflower are called 

 ray flowers; the central flowers are 

 disk floivers, and the strap-shaped 

 corollas are spoken of as ligulate F5g yj Irregu i ar 

 Corollas ; the two-lipped corollas of the flower of larkspur, 

 mint are called labiate corollas; the ( Ada Hayden.) 



flowers of the sweet pea and 

 clover are called papilionace- 

 ous; the chafflike scales of 

 grass flowers are called 

 glumes. 



When the stamens are in- 

 serted upon the petals, they 

 are called epipetalous; when 

 the pistils and stamens are 

 united, they are gynandrous; 

 when the stamens are entire- 

 Fig. 72. Regular flower of straw- ly separate, they are said to 

 berry: <; petals, 5 green sepals. b e distinct; when the stamens 

 The petals of separate pieces, .,11 ,1 c.\ _ 



polypetalous. (Ada Hayden.) are united by the filaments in 



