78 SAPINDACE^E. (s OAF-BERRY FAMILY.) 



ORDER 42. SAPINDACE^E. (SOAP-BERRY FAMILY.) 



Trees or shrubs, rarely herbs, with exstipulate alternate or opposite 

 leaves, and chiefly irregular and 7 - 9-androus flowers, imbricated in the 

 bud. Calyx 4-5-lobed. Petals 4-5, inserted with the stamens into a 

 hypogynous or somewhat perigynous disk. Anthers opening lengthwise. 

 Ovary 3-celled, the cells 1 - 2-ovuled. Seeds without albumen. Embryo 

 mostly curved or convolute. Cotyledons incumbent, fleshy. 



Synopsis. 



TRIBE I. DODONE^S. Ovules 2-3 in each cell. Embryo spirally coiled. Cotyledons 

 distinct. Leaves alternate. 



1. DODON^IA. Ovules 2 in each cell. Petals none. Capsule 2 - 4-winged. 



TRIBE II. SAPINDEJE. Ovules usually solitary. Embryo curved or straight. Coty- 

 ledons distinct. Leaves alternate. 



2. HYPELATE. Ovules 2 - 3 in each cell. Petals 4-5, regular. Fruit drupaceous. 



3. SAPINDUS. Ovules solitary. Petals 5, regular. Fruit baccate. 



4. CARDIOSPERMUM. Ovules solitary. Petals 4, irregular. Fruit a bladder-like capsule. 

 TRIBE III. HIPPOCASTANE.33. Ovules 2 in each cell. Embryo roundish. Coty- 

 ledons very thick and partly united. Leaves opposite. 



6. ^ESCULUS. Calyx 5-lobed. Petals 4 - 6, unequal. Leaves digitate. 



1. DODONJEA, L. 



Flowers perfect or polygamous. Calyx 3 - 5-parted. Petals none. Stamens 

 5-8: anthers thick, on short filaments. Ovary 3-4-celled, with 2 ovules in 

 each cell; the upper one ascending, the lower pendulous. Styles united. Cap- 

 sule membranaceous, 2 -4-winged, septicidally 2 -4-valved, the cells 1 - 2-seeded. 

 Embryo spirally coiled. Trees or shrubs, with chiefly simple leaves, and axil- 

 lary or terminal whitish or greenish flowers. 



1 . D. viscosa, L. Leaves viscid, oboyate-oblong, entire, parallel-veined ; 

 racemes axillary and terminal, shorter than the leaves; capsule 3-winged, 3- 

 seeded. South Florida. Shrubs 6 - 10 high. Flowers greenish. 



2. HYPELATE, P.Browne. 



Calyx 3 -5-parted. Petals 4-5, regular. Stamens 6-10, inserted on the 

 inner face of the cup-shaped disk which fills the base of the calyx. Ovary 2- 

 celled, with 2-3 pendulous ovules in each cell. Styles united. Stigma 2-lobed. 

 Drupe globose, 1- 2-seeded. Embryo erect. Trees with alternate trifoliolate 

 or abruptly pinnate leaves, and clustered or panicled polygamous flowers. 



1. H. trifoliata, P.Browne. Leaves trifoliolate; leaflets obovate, coria- 

 ceous, glabrous, entire ; panicles corymbose, slender, axillary, longer than the 

 leaves, few-flowered; calyx 3-4-parted, pubescent within; petals 4, ciliate; 

 drupe black, 1 -seeded. South Florida. A small tree, with brittle branches. 

 Leaflets 1' long, with fine oblique parallel veins. Flowers small, white. Sta- 

 mens 6-8. 



