Classification of Plants 



165 



Corolla usually convolute, sometimes 

 valvate ; flowers regular ; leaves op- 

 posite, simple and exstipulate. 

 Carpels united, ovary i -celled 

 Carpels separate ; styles united ; stigma 

 I ; stamens separate ;, pollen granular . 

 Carpels separate ; styles separate ; stigma 

 I ; stamens monadelphous ; pollen 

 grains united as in Orchidacese 

 CC. Carpels 2, united ; flowers regular or 

 irregular ; stamens mostly joined to the 

 corolla tube as far as the middle or 

 beyond. 

 D. Carpels 1-2-seeded. 



Ovary not lobed, 2-4 -celled, tipped by 

 the style ; carpels not separating. 

 Flowers regular .... 



Ovary usually 4-lobed. Flowers more 

 or less regular. Leaves alternate ; 

 stem round ..... 



Ovary 4-lobed. Flowers more or less 

 irregular. Leaves opposite ; stem 

 square ; strong odour 

 DD. Carpels several or many seeded. 



E. Placenta axile. Herbs, trees, or shrubs. 

 Perianth regular. Stamens 5, some- 

 times I without pollen, Fruita 

 2-celled berry or capsule 

 Perianth more or dess irregular. 

 Stamens 2-4, didynamous. Fruit 

 a capsule ..... 



EE. Placenta parietal (on the outer wall). 

 Trees or shrubs. 

 Ovary on a disc. Stamens didyna- 

 mous. Seeds winged except in 

 Kigelia. Fruit a capsule 

 AA. Ovary inferior. 



Anthers separate. Stamens joined to the 

 petals. Leaves always opposite and 

 stipulate . . ... 



Anthers united or separate. Leaves 

 alternate, exstipulate. Flowers not in 

 heads ....... 



Anthers united. Flowers in involucred heads 



Gentianace.^. 



APOCYNEiE. 

 ASCLEPIADACE^. 



CONVOLVULACE/E. 



BORAGINACEiE. 



Labiat^e. 



SOLANACE.^. 



Scrophular[ace.«. 



BiGNONIACEyE. 



RuBIACE/E. 



Campanulace.t.. 

 composit.'e. 



