14 



ANALYTICAL KEY. 



Petals of the same number (5) as the persistent sepals, yellow. 



Leaves opposite; sepals equal Hypericaceae, 30 



Leaves alternate; 2 outer sepals smaller Cistacese, 25 



2. PBRIGITNOUS or EPIGYNOUS (on the free or adnate calyx). 



Leaves opposite, simple; fleshy herbs Ficoideee, 63 



Shrubs. Sepals and petals numerous Caly canthaceae, 55 



Sepals and petals 4 or 5 Saxifragaceae, 55 



Leaves alternate, with stipules Rosacese, 49 



Without stipules; rough herbs Loasaceae, 62 



3. ON THE CLAWS OF THE PETALS. 



Stamens free; calyx a cap; petals 4 Papaveracese, 20 



Stamens many united to form a tube; petals 5 Malvaceee, 31 



Stamens 10 to 16 united for half the length; petals 5-8 StyracaceEe, 20 



B, Stamens 10 or less. 



1. OVARY or OVARIES SUPERIOR (free from the calyx), or mainly so, but 

 sometimes included in the calyx-tube. 



* Pistils more than one and distinct {not united). 

 Pistils of the same number, as petals and the sepals. 



Leaves simple entire, fleshy Crassulace^, 58 



Leaves pinnate; styles united Geraniaceag, 33 



Pistils not corresponding in number with the petals and sepals. 



Two, united at the base. Trees with compound leaves Sapindaceas, 37 



Herbs with simple leaves Saxifragaceae, 55 



Many. Stamens on the receptacle Ranunculac'eae, 16 



Stamens on the calyx Rosaceae, 49 



* * Pistil only one. 



t Shrubs or trees. 

 Style and stigma one. 



Sepals, petals, and-stamens 6 each, in 3's opposite each other. .Berberidaceas, 19 



4 to 5 each; leaves 3-foliolate, alternate . . Rutaceae, 34 



5 each; leaves simple, opposite Celastraceae, 35 



Calyx 2-lipped; petals unequal; stamens 5-8, exserted Sapindaceae, 37 



Calyx 4-toothed; petals 2; stamens 2-4; fruit a samara Oleaceae, 73 



Styles or stigmas more than one. 



Styles 2; leaves opposite; fruit 2- winged Sapindaceae, 37 



Style 3-cleft; stamens 5, opposite the small petals Rhamnaceae, 35 



Stigmas 3; leaves alternate 3-foliolate Anacardiaceae, 38 



Stigma 5-lobed; a small shrub with opposite or whorled leaves Ericaceae. 68 



