KEY TO FAMILIES 



XXlll 



r. Stamens 4-5 

 s. Stamens 3 

 y. Stamens 6 

 z. Stamens more than 6 

 (x) Leaves compound 



m. Style 5-lobed ; leaves pinnate 

 n. Style entire or 2-lobed 



(m) Leaves digitate, of 3-5 leaflets 

 (n) Leaves 2-3-ternate 



(y) Leaves simple 

 m. Sepals 2 ; leaves fleshy 

 n. Sepals 4-5 ; leaves not fleshy 

 ( m ) Shrubs 

 r. Flowers white 



(r) Leaves alternate, evergreen 



(s) Leaves opposite, not ever- 

 green 

 s. Flowers purplish-yellow ; leaves 

 linear, strong-scented 



(n) Herbs 

 r. Pistils superior 

 (r) Stamens 8 

 (s) Stamens many 

 s. Pistil inferior ; stamens 8 

 (b) Flowers irregular 

 x. Flowers spurred or hooded ; leaves 

 deeply cut or compound 

 (x) Stamens many ; pistils 2-3 

 (y) Stamens 6; pistil 1 

 y. Flowers not spurred ; leaves simple 

 (3) Petals 5 or more 

 (a) Flowers regular 

 x. Pistils simple, 1-many 

 (x) Pistils few-many 

 m. Stamens and petals coming off with 

 the calyx 



Saxifragaceae 191 

 portulacaceae 48 

 Brassicaceae 16 



LlMNANTHACEAE 37 



Capparidaceae 13 

 actaea in ranun- 

 culaceae 2 



Portulacaceae 48 



Ledum in Erica- 

 ceae 86 



Saxifragaceae 191 



Thamnosma in 

 rutaceae 40 



Saxifragaceae 191 

 Papaveraceae 9 

 Onagraceae 199 



Ranunculaceae 1 

 Fumariaceae 12 

 Onagraceae 199 



Rosaceae 150 



