Ovary very rarely inferior. ThalamifijORE^. 



Sepals distinct from each other, rarely connate, 



imbricate, rarely valvate or adnate to ovary. 

 Disk usually conspicuous, expanded or lobed. 

 Petals inserted at base of disk. 

 Stamens inserted at base of, upon, within or 



between the lobes of the disk. 

 Ovary free, or immersed in the disk, rarely 



inferior. DisciFLORE^. 



Sepals connate in a tube which is free or adnate 



to the ovary. 

 Disk usually inconspicuous. 

 Petals inserted on calyx tube, free or connate in 



a gamopetalous corolla. 

 Stamens on calyx tube or base of its lobes, or 



epipetalous. 

 Ovary superior or inferior. Caltciflore^. 



THALAMIFLORE^. 



Stamens numerous, filaments free. 

 Stamens numerous, filaments connate. 

 Stamens not more than 12, filaments free. 

 Stamens not more than 12, filaments connate. 



A. 



Trees, shrubs, undershrubs or climbers. 



Herbaceous or aquatic plants. 



1 Sepals 4-8, free. Petals none. Flowers yellow. 



1 Sepals 3, free. Petals 6 in two rows. Flowers 



white or cream 

 1 Sepals 4-5, free. Petals 4-8 or more. Ovary 



stalked. 

 1 Sepals 3-5, more or less united at base. 

 2 Shrubs with alternate, exstipulate leaves. 

 2 Shrubs or undershrubs. Leaves stipulate. 

 3 Aquatic plants with blue, white or pink 



flowers. Carpels concrete. 

 3 Aquatic or terrestrial. Flowers never blue. 



Carpels separate. 

 3 Terrestrial. Flowers yellow. Stigmas radiate. 



Fruit capsular. 

 3 Terrestrial. Flowers red. Style slender. 



Fruit capsular. 

 3 Shrubs or herbs. Flowers yellow. Stigmas 



3, or style, 3-8-fid. Fruit capsular. 



1. 



3. 



I Ranuxculace.i:. 



V Anonace;e. 



Xn Cappaeide.^. 



2. 

 XVII Bixine^e. 

 XXXIII Tiliace^.. 



Vin Nympheac E^. 



I Ranunculacejs. 



X Papaveraci.e. 



X Papaverace^. 



XXIII PORTDLACACE^. 



