GENERAL KEY. vii 



Ovules and seeds more than 1 in each cell. 

 Ovary 1-celled. 



Herbs Saxifragaceae in ROSALES 167 



Shrubs Grossulariaceae in ROSALES 167 



Ovary 2-several-celled. 



Anthers opening by pores at the apex; style 1. 



Melastomaceae in MYRTALES 230 

 Anthers not opening by pores. 



Stamens on a flat disk which covers the ovary. 



Celastraceae in SAPINDALES 214 

 Stamens inserted on the calyx. 



Eight or 4 (rarely 5) ; style 1. 



Onagraceae in MYRTALES 230 

 Five or 10; styles 2-3, distinct. 



Saxifragaceae in ROSALES 167 

 Ovule and seed only 1 in each cell. 



Stamens 2-8 ; styles 1-4 ; herbs or aquatic plants . . MYRTALES 230 

 Perfect stamens 4; styles 2; shrub. 



Hamamelidaceae in ROSALES 167 

 Stamens 4 ; style and stigma 1 ; chiefly shrubs. 



Cornaceae in UMBELLALES 235 

 Stamens .5 ; flowers in umbels, or rarely in heads. 



UMBELLALES 235 



Petals more or less united. Series 2. Gamopetalae. 



A. Stamens more numerous than the lobes of the corolla. 



Ovary 1-celled with 1 parietal placenta. . Papilionaceae in ROSALES* 167 

 Ovary 1-celled with 2 parietal placentae. 



Adlumia in PAPAVERALES* 166 

 Ovary 2-celled with a single ovule in each cell. 



Polygalaceae in GERANIALES* 205 

 Ovary 3 -many-celled. 



Stamens free or nearly free from the corolla; style single. 



ERICALES 244 

 Stamens free from the corolla; style 5. 



OxALis IN GERANIALES* S07 



Stamens inserted on the base or tube of the corolla. 



Filaments monadelphous ; anthers 1-celled, kidney-shaped. 



Malvaceae in MALVALES* 220 

 Filaments 1-5-adelphous at base, anthers 2-celled. 



Calyx free from the ovary . . Theaceae in PARIETALES* 222 

 Calyx coherent with the ovary, or with its base. 



Styracaceae in EBENALES 252 

 Filaments wholly distinct; calyx free, persistent. 



Ebenaceae in EBENALES 252 

 Filaments in pairs at each sinus; anthers 1-celled. 



Caprifoliaceae in RUBIALES 298 



B. Stamens {fertile ones) as many as the lobes of the corolla and 



opposite them PRIMULALES 250 



C. Stamens as many as the lobes of the corolla and alternate with 



them or fewer. 

 1. Ovary inferior. 

 Tendril-bearing lierbs; anthers often united. 



CucuRBiTACEAE IN CAMPANULALES 305 

 Tendrils none. 



Stamens united by their anthers into a ring or tube. 



CAMPANULALES 305 

 Stamens separate, free from the corolla or nearly so, as many as 

 its lobes; stipules none; juice usually milky. 



Campanulaceae IN CAMPANULALES 305 



