KEY TO FAMILIES 



(n) Herbs 

 y. Pistil compound 

 (x) Shrubs or trees 

 m. Vines with tendrils 

 n. Woody plants without tendrils 

 (m) Leaves simple 

 r. Style 1 

 s. Styles 2 



(r) Ovary superior, usually trees 

 (s) Ovary inferior, bushes 

 t. Styles 3-5 



fr) Flowers greenish 

 (s) Flowers white or pink 

 (n) Leaves compound 

 r. Leaflets always 3 

 (r) Flowers white 

 (s) Flowers greenish 

 s. Leaflets usually more than 3 

 (r) Thorny shrubs 

 (s) Thornless trees 

 (y) Herbs 

 m. Leaves pitcher-shaped 

 n. Leaves not pitcher-shaped 

 (in) Ovary many-celled, aquatic plants 

 (n) Ovary 5-celled 

 r. Ovary superior 



(r) Leaves simple, evergreen 

 (s) Leaves deeply cut or compound 

 h. Leaves deeply cut 

 i. Leaves trifoliate 

 s. Ovary inferior 

 (o) Ovary 1-2-celled 

 r. Ovary 2-cellecl 

 (r) Ovary superior 

 h. Leaves simple 

 i. Leaves trifoliate 

 (s) Ovary inferior 

 s. Ovary 1-celled 

 (r) Sepals 5 

 h. Styles 2 

 i. Styles 3-5 

 (s) Sepals 2 

 h. Stamens many 

 i. Stamens 5. 

 (b) Flowers irregular 

 x. Ovary 3-celled, stamens long-exscrted 

 y. Ovary 1-celled, stamens mostly included 

 (x) Flowers spurred 

 (y) Flowers not spurred 

 b. Petals united 



(a) Ovary superior 

 x. Low mostly evergreen shrubs 

 y. Herbs 



(x) Ovary 1-celled 

 m. Carpels 2 

 n. Carpels 5 



Ranunculaceae 



7 



Vitacc.ac 



31 



Ericaceae 



18 



Aceraceae 



32 



Saxifragaceae 



29 



Rhamnaceae 



30 



Rosacea e 



24 



Slaphyleaceae 



31 



Anacardiaceae 



32 



Rutaceae 



17 



Rosaceae 



24 



Sarraceniaceae 



13 



Kymphacaceae 



10 



Ericaceae 



18 



Geraniaceae 



16 



Oxalidaceae 



17 



Arahaccae 



34 



Saxifragaceae 



29 



Mcnyanthaceae 



20 



Apiaceae 



35 



Saxifragaceae 



29 



Caryophyllaceae 



14 



Papavcraceae 



10 



Portnlacaceae 



15 



Sapindaceae 



32 



I 'iolaceae 



13 



Fabaceae 



27 



Ericaceae 



18 



Ilydrophyllaccae 



21 



Primulaceae 



19 



