OKDEK 41. INDIAN 8OAPWOBTS. 



18fl 



ORDER XLI. SAPINDACE^E. Indian Soapworts. 



Plants of various habit, mostly with unsymmetrical flowers; 

 sepals and petals both imbricated in the bud ; 

 stamens 5 to 10, inserted on a thick disk under the ovary ; 

 fruit usually colored and showy, lobed, 1 or few-seeded. 



The Order includes the following three Tribes. 



JS 1 



Analysis of the Genera. 



THE BUCKKTK TRIBE. Leaves opposite, carpels 2-ovaled ---- a 

 a Petals unequal. Stamens 7. Leaves digitate. Buckeye. JSs'cui.tJB. 1 



2. THE SOAPBERRY TRIBE. Leaves alternate. Carpels 1-ovuled ---- b 

 b Trees, with pinnate-leaves and fruit with soapy pulp, covering a 



large seed. Stamens 8-10. South. Soapwort. SAPIN'DUS. 



b Herbs climbing with tendrils. Leaves biternate. Fruit a large, 



inflated, 3-carpeled pod. Balloon-vine. CARDIOSPER'MCM. 



3. THE BLADDER-XCT TRIBE. Leaves opposite, pinnate. STAPHYI.E'A.. i 



434 



Fig 434. Branclilet of Bladder-nut, with 2 

 ternate leaves and a hanging cyme. 435. The 

 stamens and pistil enlarged. 4-S6. A flowor ">' 

 Ohio Buckeye. 



1. JSS'OULUS. Buckeye. 



Calyx o-toothed. Corolla of 4 or 5 unequal petals. Stamens 7, distinct, 

 unequal. Style filiform. Ovary 3-celled, with 2 ovules in each cell, but 

 only 1 of the 6 ovules grows, becoming a large seed. Flowers in terminal 

 Dflnieles. 



