Vo... II.] SENNA FAMILY. 257 
5-toothed. Corolla irregular; petals 5; standard enclosed by the wings in the bud; keel 
larger than the wings. Stamens Io, distinct, declined; anthers all alike, short, versatile, 
longitudinally dehiscent. Ovary short-stipitate; ovules «©. Pod linear-oblong or oblong, 
flat, margined along the upper suture, 2-valved at maturity, the valves thin, reticulate-veined. 
{Ancient name of the Old World Judas-tree. ] 
About 5 species, natives of North America, Eu- 
rope and temperate Asia. 
1. Cercis Canadénsis I, Red-bud. 
American Judas-tree. (Fig. 2033.) 
Cercis Canadensis I,. Sp. Pl. 374. 1753+ 
A tree, with greatest height of about 50° and 
trunk diameter of 1°, or oftenshrubby. Stipules 
membranous, small, caducous; leaves simple, 
petioled, cordate-orbicular, blunt-pointed, rather 
thick, glabrous, or pubescent along the veins 
beneath, 2’-6’ broad; flowers several together in 
sessile umbellate clusters, appearing before the 
leaves; pedicels slender, 4//-12/’ long; corolla 
pink-purple, about 4’’ long; pod short-stalked 
in the calyx, linear-oblong, acute at each end, 
glabrous, 2’-3’ long, 6’” wide, several-seeded. 
In rich soi], southern Ontario and New Jersey 
to Minnesota, south to Florida and Texas. Wood 
hard, weak, dark reddish-brown; weight per cubic 
foot 40 lbs. April. 
2. CASSIA L,. Spiele a One 7i5 3: 
Herbs, shrubs, or in tropical regions trees, with evenly pinnate leaves, and mainly (in all 
our species) yellow flowers. Calyx-teeth nearly equal, generally longer than the tube. Co- 
rolla nearly regular; petals 5, spreading, nearly equal, imbricated, clawed. Stamens usually 
Io, sometimes 5, often unequal and some of them imperfect; anthers all alike, or those of the 
lower stamens larger, opening by 2 pores at the summit. Ovary sessile or stalked; ovules 0. 
Pod flat or terete, often curved, septate or continuous between the seeds. Seeds numerous. 
[Ancient name. ] 
About 275 species, of wide distribution in warm and temperate regions, very abundant in tropi- 
cal America. Besides the following, about 20o0thers occur in the southern and southwestern States. 
Leaflets linear or oblong, numerous, 3/’—10'’ long; plants 6'-18' high. 
Flowers 2'’-4'' broad, short-pedicelled; anthers 5. 1. C. nictilans. 
Flowers 1/-114' broad, slender-pedicelled; anthers ro. 2. C. Chamaecrista. 
Leaflets ovate, oblong. or obovate, 1'-2' long; plants 1°-5° high. 
Leaflets 6 or 4, broadly obovate. 3 
Leaflets 8-18, oblong or ovate-lanceolate. 
Perennial; leaflets oblong, obtuse. 4. C. Marylandica, 
Annual; leaflets ovate-lanceolate, acute or acuminate. 5. C. occidentalis. 
PG. Lona. 
1. Cassia nictitansI,, Sensitive Pea. 
Wild Sensitive-plant. (Fig. 2034.) 
Cassia nictitans 1. Sp. Pl. 380. 1753. 
Annual, erect or decumbent, branching, 
more or less pubescent, 6/-15’ high. Stip- 
ules subulate-linear, persistent; leaves peti- 
oled, sensitive, bearing a small gland near 
the base of the petiole; leaflets 12-44, linear- 
oblong, obtuse and mucronate at the apex, 
rounded and oblique at the base, inequilat- 
eral, 3/’-8’” long, 1//-1%’’ wide; flowers 2-3 
together in the axils, short-pedicelled, 2//-4/’ 
broad; calyx-lobes acute or acuminate; sta- 
mens 5, all perfect; pod linear, nearly glabrous, 
or pubescent, 17-14’ long, 2/-214’ wide. 
In dry soil, Maine to Georgia, west to Indiana 
Kansas and Texas. Southern plants usually 
have more numerous leaflets than northern, 
July—Oct. 
Pha e2 la 
