A KEY TO THE FAMILIES 



PACK 



b. Ovary two to several-celled. 



c. Ovary two-celled; corolla irregular. 



Polygalacece 278 

 c. Ovary three or more-celled; corolla 



regular or nearly so. 

 d. Stamens not attached to the 



corolla. 

 e. Style one; leaves simple. 



Ericaceae 340 

 e. Styles more than one. 



f. Styles three: erect spiny 



shrub. Fouquieriaceae 294 

 f. Styles five; low herbs. 



Qyfl/frfflffflf 272 



d. Stamens attached to the corolla, 

 plants without green foliage 



Monolropaccae 356 

 Stamens five or fewer in number. 

 b. Corolla regular. 



c. Stamens free from the corolla. 



Ericaceae 340 



c. Stamens attached to the corolla. 

 d. Pistil one. 



e. Stamens of the same number 

 as the corolla lobes and op- 

 posite them. 



Primulaceae 362 

 c. Stamens alternate with the 



corolla lobes or fewer, 

 f. Ovary one- or two-celled. 

 g. Styles two or occasional- 

 ly one. 



h. Capsule usually 

 many-seeded; sepals 

 united. 



HydropkyUaceae 402 

 h. Capsule few-seeded; 

 sepals separate. 



CotnolnOmc*** 380 

 g. Styles one or none, 

 h. leaves opposite. 



L Trees with pinnate 



leaves. Olfateac 366 

 L Herbs with simple 

 s m o o t h-e d g e d 



Gentianaceae 368 

 h. Leaves alternate, 

 i. Ovary one-celled; 

 leaves with three 



380 



L Ovary two-celled; 

 le-ives Vttri MB. 



SllMMMM _5> 

 (. Ovary three- or four-celled. 

 g. Style one; ovary three- 

 celled. 



Poltmottiaceat 384 

 g. Styles two; ovary four- 



e. Stamens and stigmas united; 



flowers with hood-like ap- 



pendages. AscUptJacfc 

 e. Stamens and stigmas not 



united; flowers without 



hood-like appendages. 



AtxYn*<rae 378 



XIX 



