392 SAPINDACEAE 
Ovary 3-celled. Fruit a leathery capsule studded with spines en- 
closing 1 to 3 smooth roundish seeds. 
AESCULUS, L. 
Characters as above. P 
1. A. Hippocastanum, IL. Horse Cuestnut. A large tree, ex- 
tensively planted as an ornamental tree. Leaves opposite, compound, of 
7 leaflets all springing from a common center. Each leaflet wedge-shaped 
and notched along the borders. The two outer leaflets smaller than the 
others. The showy, erect clusters of white (sometimes purple) towers 
are conspicuous in parks and along roadsides in May and June. 
2. A. glabra, Willd. (Fig. 3, pl. '89.) Onto BucKkeyE. Leaflets 5. 
Otherwise much resembling No. 1, but with yellow flowers. Found in 
southern Pennsylvania of our region. 
Famity IX.—SAPINDACEAE. Soapperry FAMILY 
Trees, shrubs or herbaceous vines, with alternate leaves, which 
are usually compound. Flowers regular or slightly irregular. 
Calyx division 4 or 5; petals 3 to 5. Stamens 5 to 10. A single 
species in our region. 
CARDIOSPERMUM, L. 
Description included with the only species in our area. 
C. Halicacabum, L. (Fig. 8, pl. 93.) Battoon Vine. HeEaArtT SEED. 
A slender vine, climbing on shrubs and trees, 2 to 6 ft. long. Leaves 
alternate and doubly compound, i. e., of 3 divisions, each of 3 wedge- 
shaped or oval leaflets, these coarsely toothed. Flowers in small clusters, 
the two lower footstalks of each cluster changed to tendrils. Divisions 
of calyx 4, of which two are larger than the other two; petals also 4, with 
similar disproportion between two pairs, white. Stamens 8, unequal. Fruit 
a much inflated bladder-like capsule 1 in. long, containing black globose 
seeds. Escaped from cultivation, occasional only. 
Famity X.—BALSAMINACEAE. Jrwet Weep FAmIty 
Annual herbs, with succulent stems, with simple alternate leaves 
and very unsymmetrical flowers. Calyx of 3 sepals, unequal and 
unlike; stamens 5; petals 5 or 3, two of them divided into unequal 
and dissimildr lobes. Ovary compound, of 5 cells; pistil very short. 
Fruit in our genus a cylindric capsule which bursts elastically on 
pressure. 
IMPATIENS, L. 
Divisions of calyx colored like the corolla. Petals apparently 2, the 
lower being united with the two lateral, Joints of stem swollen. 
l. I. biflora, Walt. (Fig. 1, pl. 93.) Sporrep ToucH-MrE-NoT. JEWEL 
Weep, Succulent herb, 2 to 5 ft. high, with ovate or elliptic leaves, the 
