FLOWER KEY TO FAMILIES 



y. Petals white, stamens 2 Oleaceae 



(b) Petals not strap-shaped 

 x. Stamens 4-5 



(x) Thorns present, leaves compound 

 (y) Thorns absent, leaves simple 

 m. Leaves evergreen, very small 

 n. Leaves not evergreen, opposite 

 (m) Ovary superior 

 (n) Ovary inferior 

 y. Stamens 8-many 

 (3) Petals 5 or more 

 (a) Flowers regular 

 x. Pistil simple, 1-many 

 (x) Pistils few-many 

 m. Twining vines 



(m) Flowers small, dioecious 

 (n) Flowers large and showy, perfect Ranunculaccae 

 n. Trees or shrubs 



(m) Stamens inserted on the calyx, re- 

 ceptacle flat or hollow 

 (n) Stamens free from the calyx, re- 

 ceptable cone-shaped 

 (y) Pistil 1 

 m. Stamens 5-12 



(m) Spiny shrubs, leaves simple or once 



pinnate 

 (n) Trees, often thorny, leaves mostly 

 twice pinnate 

 n. Stamens many 

 y. Pistil compound 

 (x) Vines 

 m. Vines with tendrils, stamens opposite 



the petals 

 n. Vines without tendrils, stamens alter- 

 nate with the petals 

 (m) Leaves simple 

 (n) Leaves compound 

 (y) Trees or shrubs 

 m. Leaves simple 



(m) Leaves scale-like 

 (n) Leaves not scale-like 

 r. Style 1 



(r) Trees, stigma 5-lobed 

 (s) Shrubs 

 p. Stamens 5, opposite the petals Rhamnaceae 

 q. Stamens 5, alternate with the 

 petals, or more than 5 

 (p) Ovary superior 

 h. Evergreen shrubs 

 i. Deciduous shrubs 

 (h) Leaves alternate 

 (i) Leaves opposite 

 Ovary inferior, stigmas 2 



Rutaceae 



Celasiraceae 

 Cornaceae 

 Saxifragaceae 



Menispermaceae 



Rosaceae 



Magnoliaceae 



Berberidaceae 



Leguminosae 

 Prunus in Rosaceae 



Vitaceae 



Celasiraceae 

 A nacardiaceae 



Tamaricaceae 



Tiliaceae 



Ericaceae 



Ilicaceae 



Celasiraceae 



Ribes in Saxifragaceae 



(q) 

 s. Styles 2-5 

 (r) Styles 2 

 p. Leaves opposite, ovary superior Aceraceae 

 q. Leaves alternate, ovary inferior Ribes in Saxifragaceae 

 (s) Styles 3 5, ovary inferior 

 p. Leaves alternate Rosaceae 



q. Leaves opposite Saxifragaceae 



Leaves compound 

 (m) Leaflets always 3 

 r. Flowers white Staphyleaceae 



17 

 107 



80 



84 



194 

 270 

 181 



50 

 46 



118 



44 



48 



171 

 163 



201 



194 



227 



51 



70 

 197 



84 



213 

 194 



185 



219 



185 



118 

 181 



215 



