Viii Flora of the Palouse Region 



Ovary i, not deeply lobed. 

 Ovary i-celled. 



Leaves entire, opposite. gentian aceae 136 



Leaves mostly not entire, if entire alternate. 



HYDROPHYLLACEAE I43 



Ovary 2-10-celled. 



Stamens free from the corolla, or nearly so. 



ERICACEAE I32 



Stamens on the corolla-tube. 



Stamens 4. plantaginaceae 166 



Stamens 5, or rarely more. 

 Fruit a few-seeded pod. 



vStyle 3-lobed. polkmoniaceae 140 



Styles entire or 2-cleft. 



convolvulaceae 139 



Fruit a many-seeded pod or berry. 



solanaceae 154 



Stamens fewer than the corolla-lobes. 



Corolla scarious. plantaginaceae 166 



Corolla not scarious. 



Style 2-lobed. Lycopus in labiatae 153 



Style single. Veronica in scrophulariaceae 163 



b — Ovary inferior. 

 Stamens united by their anthers into a ring or tube. 



Flowers in an involucrate head. compositae 174 



Flowers separate, not involucrate. lobeliaceae 173 



Stamens separate, free from the corolla or nearly so. campanulace . k 171 



vStamens separate, on the corolla. 



Stamens 1-3, fewer than the corolla-lobes. valerian aceae 170 



Stamens 4-5. 



Ovary i-celled: flowers in a dense involucrate head. 



dipsaceae 174 



Ovary 2-3-celled. 



Leaves opposite or whorled, when opposite with stipules. 



rubiaceae 167 



Leaves opposite, without stipules. caprifoliaceae 168 



