18 



Stamens equal in number to the petals and opposite. 



Shrubs Myrsineae. 



Herbs, P rimulaceae. 



Stamens not opposite to the petals if of the same number. 

 Seeds indefinite. 



Carpels distinct, Crassulaceae. 



Seeds definite. 



Carpels distinct, Aiwnaceae. 



Carpels combined. 

 Ovules erect. 



Corolla imbricate in bud, Sapo/aceae. 



Corolla plaited in bud, Convolvulactae. 



Ovules pendulous. 



Stamens twice as many as petals, Ebenaceae. 



Stamens the same number as petals, Jlicineae. 



Carpels usually 3. 



Flowers dioecious, Pupayaeeae. 



Flowers hermaphrodite. An hypogynous disk, Polemoniaceae. 



Carpels only 2. 



Diandrous, Corolla valvate, Oleaceae. 



Diandrous. Corolla imbricate, Janminaceae. 



Stamens 4 or more. Inflorescence gyrate. 



Fruit 1-celled, Ili/drophyllaceae. 



Fruit 2-celled. Styles 2-cleft, Boraginrae. {Ehrctiaceae). 



Fruit 2-celled. Styles dichotomous, Jiorayinecte {Coidiaceae). 



Stamens 4 or more. Inflorescence straight. 

 Flowers symmetiieal. 



Leaves alternate, Solanaceae. 



Leaves opposite. 



Authers grown to the stigma it. ,Asclepiadeae. 



Anthers free from stigma. 



Corolla iuibrioate in the bud, Gentianeae. 



Corolla valvate in bud, . , , Logaiiiaceae. 



Corolla contorted, Apocyneue. 



Flowers not symmetrical. 



Leaves with stipules, Loganiaecae. 



Carpel solitary. 



Style single. 



Fruit spuriously 2-celled Plantagineae. 



Fruit 1-celled, l-seeded Jasmineae {Salaidoraccae). 



Styles 5, , , Plumbayineae. 



Flowers irregular. 



O Ovary 4-lobcd, , Lahiatae. 



O O Ovary undivided. Carpch 2. 



Fruit nucamentaceous, 4- celled. Badicle inferior, Verhenaceae, 



Fruit capsular or succulent. 

 Placentae parietal. 



Seeds amygdaloid. Fruit bony or capsular, few-seeded, , Pedaliaceae. 



Seeds not amygdaloid. 

 Leafy. 



Seeds winged, Bignoniaceae. 



Seeds not winged , Cyrtaiidraccae. 



Scaly brown parasites Orobanchaceae. 



Placentae axile. 



Seeds albuminous Scrophulariaceae. 



Seeds without albumen. 



Seeds winged, Bignoniaceae. 



Seeds not winged, usually attached to bony hooked placentas, Acanthaceae. 



Placenta free, central Lenlibularieae. 



f t Ovary inferior. 



O Carpels solitary. 



Anthers syngenesious. Ovule erect, , Compositae. 



Anthers free. 



Carpel quite solitary. Flowers in heads, Dipsaceae. 



