Key to Families 





I . Petals i resent 



1. Flowers single or in clusl 

 ds 3 



( 1 ) i >\ ary superior 



(a) Pistils several-many, simple 

 Pistil 1, compound 

 \. Sepals green, or still and dry, unlike the pel 

 (x) Air plants with gray foliage 

 (v) Lam! plants with green leaves and sepals 

 y. Sepals and petals similar in color and texture 



Sepals and petals very small, scale-like, usuallj 



brown 

 - pals and petals not scale-like imr greenish brown 

 in. Aquatic plants, Sowers irregular 

 n. Land plants. Rowers regular or near;-. 



(2) Ovary inferior 



(a) Aquatic, leaves submerged, flowers floating 



(b) Not aquatic 



x. Stamens 3-6, (lowers regular or moderately irregular 

 (x) Stamens 6 

 (y) Stamens 3 

 y. Fertile stamens 1 2, llowrrs very irregular 

 (x) Stamen not attached to style, seeds few 

 (y) Stamen or stamens attached to the style, seeds very numer- 

 ous 

 b. Petals 4 or more 

 (1) Petals separate 



(a) Petals 4 



x. Flowers regular 



i\> Stamens 4. at least the anther-bearing 

 Stamens l> or more 

 m. Stamens 6 

 n. Stamens 8 or more 

 (m) Stamens 8-10 

 r. Fleshy plants 

 s. Nut fleshy 



■ '\ ary superior, i. e, \\ ithin the 

 h. Pod bladderj ; flowers white 

 i. Pod nol flowers yellowish 



(s) <>\arv infei T. i.e. below the other : 

 Stamens 1- or 

 \. Flowers irregular 

 3l miens many 

 Stamen 1 



(b) Petals 5 ,,r more 

 \. Petals 5 



(x) Flowers regular % 



m. Pistils feu c 

 (m) Plants Resl 













