586 CASSIACEAE 
7. Cassialigustrina L. Plant perennial, 1-2 m. tall, herbaceous, glabrous. Stem 
grooved : leaflets 12-16, the blades lanceolate, glabrous, 4-4.2 cm. long, about 1 cm. wide: 
petiolar gland at base of rachis, elongated, stipitate: stipules linear, membranaceous, 
caducous: racemes few-flowered, forming a corymbose panicle: calyx-lobes oval, mem- 
branaceous, shorter than the petals: pods flat, glabrous, with slightly sinuate margins, 8 
cm. wide : seeds parallel with the valves. 
Inswamps or woods, peninsular Florida. Also in the West Indies and tropical America. 
8. Cassia Tóra L. Plant annual, 0.5-1.5 m. tall. Stem glabrous, herbaceous: 
leaflets 4-6, the blades glabrous or pubescent beneath, obovate-elliptical or wedge-obovate, 
very slightly euspidate, the terminal pair much the largest, all symmetrical or nearly so at 
the base, 3-5 cm. long, about 2.5 cm. wide: petiolar glands slender, elongated, situated 
between the lowermost pair of leaflets: stipules persistent: racemes loose, few-flowered : 
flowers large: calyx-lobes oval, membranaceous: pods elongated, linear, acute, faleate, 
more or less tetragonal, glabrous, 16-18 cm. long, 3 mm. wide: seeds numerous, large, 
quadrate. 
In waste grounds, Virginia to Indiana, Floridaand Arkansas. Also in Cubaand tropical America. 
9. Cassia bifldra L. Plant shrubby. Stems branching freely, glabrous or pilose: 
leaflets 4-10, the blades usually pubescent or canescent beneath, sometimes glabrous, ob- 
long-elliptical, acute or obtuse at apex, 4 cm. long, about 1.6 cm. wide: petiolar gland 
stipitate, slender, acute, situated between lowermost pair of leaflets: stipules linear, mem- 
branaceous, caducous: peduncles 2-flowered, in close terminal racemes: flowers large: 
calyx-lobes oblong-elliptical, as long as the petals: pods faleate, narrowly linear, 9 cm. 
long, 5 mm. wide. 
An occasional escape in Florida. Abundant in the West Indies and Mexico. 
10. Cassia Bahaménsis Mill. Plant shrubby, tall. Stems often simple, glabrous 
or somewhat pilose : leaflets 6-10, the blades subcoriaceous, ovate or acutely elliptical, sub- 
mucronate, 3.5-5 cm. long, 1.6 em. wide: petiolar gland orbicular, depressed, varying 1n 
position from between lowermost pair of leaflets to near base of rachis: stipules linear, 
caducous : flowers corymbose-paniculate: sepals petal-like : pods linear, flat, with lateral 
depressions between the seeds, 9 cm. long, 5 mm. wide. 
In dry soil, Florida. Also in the Bahamas. 
3. CHAMAECRÍSTA Moench.! 
Herbs or shrubs, with pinnate leaves and axillary or supra-axillary flowers or flower- 
clusters. Rachis of the leaf bearing one or rarely two glands near the base. Flowers 
solitary or clustered, each borne on a twisted pedicel. Calyx-lobes 5, acuminate, mem- 
branaceous. Corolla irregular. Petals 5, one of the lateral ones (banner) and the lower- 
most petal (one of the wings) largest, the remaining three petals often greatly reduced. 
Stamens 10, all perfect, or occasionally some of them reduced to staminodia: anthers 
irregular in size, opening by apical pores: filaments short. Pods linear, flat, promptly 
dehiscent at maturity, the valves very elastic. Seeds compressed, ovoid or quadrate, 
oblique. SENSITIVE PEA. SENSITIVE PLANT. 
Corolla large, exceeding 1 cm. in diameter: petals only moderately unequal. 
Plants shrubby or woody, at least at the hee ‘ sf * ; 
Leaflets few, 3-8 pairs. 1. C. grammica. 
pt m par Ee GA airs. 1 
ants erect: leaf- es 20-40-foliolate. es i 
Leaflets 5 mm. long. 2. C. Mississippienss. 
Leaflets 1 cm. long. x 
Leaves cinereous-pubescent. 3. C. cinerea. 
Leaves glabrous. 4. C. brachiata. 
Plant prostrate or decumbent : leaf-blades 18-24-foliolate. 5. C. procumbens. 
Plants annual, herbaceous. ;culata 
Petiolar gland oblong, depressed-truncate: species northern. 6. C. fasciculata. 
Petiolar gland orbicular: species all southern. 
Plant robust, strongly hirsute. 7. 
Plants of low stature, glabrate or only slightly pubescent. 
Gland crateriform. 8. 
Gland discoid. 
Corolla 2-3 em. broad. 
C. robusta. 
C, bellula. 
C. chamaecristoides, 
Plant low and spreading : leaflets scattered on the rachis. 9. qnc 
Plant erect: leaflets crowded on the rachis. 10. C. littorans. 
Corolla 1-1.5 em. broad. 11. C. Tracyt. 
Corolla small, less than 1 em. in diameter, one petal much larger than the re- 
maining four. 
a. Plants copiously hirsute. 
! Contributed by Mr. Charles Louis Pollard. 
