0RDE15 45.- THE MILKWORTS. 



185 



§ Fruit covered with prickles. Tctalrt 4 or 5, spreading 1,2 



§ Fruit smooth. Petals 4, erect, 2 of tlicm clawed 3-5 



1 JE. Hippocasta'neum. J/orae Chestnut. Leaves of 7, obovate leaflets. Petals 5. 



Fruit prickly. Panicles large, handsome. + 



2 SI. glabra. Ohio Buckeye. Leaflets 5, oval or oblong. Petals 4. Tree ill- 



seented. Flowers yellowish. Seed mahogany-color. "W. 

 8 .E. fla'va. Big Buckeye. A large tree, with pale-yellow flowers. Leaflets 5-7 



Petals very unequal, longer than Btamens. W. 

 4 2B. Fa'via. Eed-Jlvwered B. Shrub 3-lOf. Fls. large, red, in thyrse-lise racemes. 



Very handsome. S. t 

 6 iE. parviflo'ra. White B. Shrub 2-3f. Petals 4, somewhat alike, spreading, 



thrice shorter than the stamens. S. 



2. STAPHYLE'A. Bladder-nut 

 Flowers perfect. Sepals 5, colored like the 5 petals. Stamens 5. 

 Styles 8. Capsules 2 or 3, with thin, inflated walls. — Shrubs. 

 1 S. trifo'lia. Ternate B. A handsome shrub, 6-8f. high. Leaves ternate, leaflets 

 ovate. Eacemes pendulous. Petals 



ciliate below. Fruit very large, 3- 

 celled, inflated like a bladder. 



Order XLY. POLYGALA- 

 CEJE. The Milkworts. 



Plants without stipules, bearing verj 



'wTQ^lav flowers ; 

 stamens 4-8, diadelphous; 

 anthers opening at the top, 1 -celled ; 

 fruit a flattened, 2-celled, 2-seeded 



capsule, free from the calyx. 



Fig. 437. Polygala polygama: o, the raiiical 

 flowers; 8, P. paucifolia; f, the crest on tlie 

 lower petal ; 9, tho stamens in 2 sets, and the 

 style seen beneath tho hooded lower i)etal. 



Fig. 440. The ovary and the style: 1, seed of 

 P. sanguinea, with its 2-lobed caruncle; 2, seed 

 of P. Nuttallii. 



POLYG'ALA. MUkwort. 



Sepals 5, persistent, 2 of thorn 

 (wings) wing-shaped and colored. 



