OUTLINE OF TWENTY LESSONS. 299 



Pyrolaceee ; pyrola family, pyrola, Indian-pipe, etc. 

 Ericacea ; heath family. (Also rhododendron and whortle- 

 berry families.) 

 PRIMULINTE : One -celled ovary, seeds on a central column, 



corolla salver-form. 

 Primulacece ; primrose family. 



2. Flowers tetr acyclic, that is, the parts in four whorls. 

 TUBIFLOR/E : Gamope talous corolla not split, the five parts in- 

 dicated by a slight unevenness of the margin, corolla twisted 

 in bud. 

 Convolvulace<e ; bindweed family, morning-glory, dodder, 



etc. 

 PERSONATE : Flowers frequently bilabiate (the nightshade 



family represents this group). 



NUCULIFER/E : Calyx gamosepalous ; gamopetalous corolla usu- 

 ally bilabiate, carpels usually two, forming four nutlets. 

 Boraginacetz ; borage family, forget-me-not, etc. 

 Labiate ; mint family, dead-nettle, catnip, etc. 

 CONTORT/E : The corolla is twisted in the bud, but is split into 



five lobes. 



Gentianacecc. ; gentian family. 



RUBIALES : Leaves opposite with stipules, or veiticillate. 

 Rubiacece ; madder family, bluet. 

 Caprifoliacecc ; honeysuckle family, lonicera, etc. 

 DIPSACALES : Flowers in a head (in one family), no stipules, 



anthers distinct. 

 Valerianacecz ; valerian family. 

 Dipsacacecc ; teasel family. 

 CAMPANULIN^E : Flowers not in heads, anthers united. 



Campanulacece ; bellflower family. 

 COMPOSITE : Flowers in heads, anthers united. 



Composite ; composite family, aster, solidago, sunflower, 

 dandelion, etc. 



