58 CASSIACEAE. 



Petals, except the standard, sessile or with very 



short claws. 5. Caesalpinia. 



Petals, except the standard, long-clawed. 6. Poinciana. 

 Pods short, prickle-armed : standard with a cuneate or 



sp.-itiilate blade. 7. Guilaxdixa. 



Sepals 4 : petals 3, often accompanied by 2 rudiments : stamens 3. 8. Tamaeindcs. 



1. CASSIA [Tourn.] L. Herbs, shrubs, or trees. Leaves abruptly 1-pin- 

 nate: stipules deciduous. Flowers in axillary racemes or panicles. Sepals 

 nearly distinct, leathery or petaloid. Petals mainly yellow or whitish. Pod 

 more or less turgid, indehiscent or tardily dehiscent. — Senna. 



Plants herbaceous. 



Petiolar gland near the base of the rachis : blades of the leaflets not obovate. 



1. C. occidentalis. 

 Petiolar gland between the lower pair of leaflets : blades of 



the leaflets obovate or cuneate. 2. C. Tora. 



Plants woody. 3. C. hahamensis. 



1. C. occidentalis L. Plant annual, 5-15 dm. tall, nearly glabrous: leaflets 

 8-12 ; blades lanceolate, becoming lanceolate-elliptic, somewhat acuminate, 

 3.6-5 cm. long; petiolar gland globular, near the base of the rachis: stipules 

 broadly lanceolate: sepals 11-14 mm. long: petals 15-19 mm. long: pods 

 linear, glabrous, with the septa externally prominent, 8-13 cm. long, 6 mm. 

 wide. — Pinelands and cultivated grounds, L. keys. Nat. of Trop. Am. — [E. K.] 

 — (Ber., Bah., Cuha, Ant.) 



2. C. Tora L. Plant annual, 4-15 dm. tall, nearly glabrous: leaflets 4-6; 

 blades obovate or cuneate-obovate, very slightly cuspidate, the terminal pair 

 much the largest, 3-5 cm. long: petiolar gland elongate, between the lower 

 pairs of leaflets: stipules linear-spatulate to setaceous: sepals 7-9 mm. long, 

 the larger ones ovate: petals 13-15 mm. long, very diverse in shape: pods 

 falcate, more or less tetragonal, 3-4 mm. wide. — Pinelands and waste grounds, 

 L. keys. Nat. of Trop. Am.— [E. K.]— (Ba7i., Cuba, Ant.) 



3. C. bahamensis Mill. Plant woody: leaflets 6-10; blades subcoriaceous, 

 ovate or acutely elliptical, mucronate, 3.5-5 cm. long: petiolar gland de- 

 pressed, between the lower pairs of leaflets to near base of rachis: stipules 

 ovate to lanceolate: sepals 7-12 mm. long: petals 15-20 mm. long, or some- 

 times smaller: pods flat, with lateral depressions between the seeds, 9-11 cm. 

 long, 5 mm. wide. — Pinelands, L. keys. — [E. K.] — {Bah., Cuba.) 



2. CHAMAECRISTA Moench. Herbs or shrubs. Leaves abruptly 1-pin- 

 nate: stijjules persistent. Flowers clustered in leaf -axils. Sepals nearly dis- 

 tinct, membraneous. Petals mainly yellow or whitish. Pod flattish, promptly 

 dehiscent, the valves elastic. — Sensitive-pea. Sensitive-plant. 



Corolla large, over 2 cm. brond. 



Tall woody plant : smaller petals over 1..5 cm. long : i)ods glabrous. 1. C. hracMata. 

 Low or diffuse, partly woody plant : larger petals less than 1.5 



cm. long : pods pubescent. 2. C. grammica. 



Corolla small, less than L.'j cm. broad. 



Stem and branches erect or ascending : leaflets mostly 40-54. 3. C. aspera. 

 Stem .Mild branches prostrate or decumbent : leaflets mostly 



16-34. 4. C. Simp,sonii. 



1. C. brachiata Pollard. Stem 2 m. tall or less, often widely branched above: 

 leaflets 20-28; blades linear, cuspidate, glabrous, midvein somewhat excentric: 

 petiolar gland much depressed, discoid: stipules lanceolate: sepals 15-20 mm. 

 long, glabrous or nearly so: standard 17-24 mm. long: pods 6-7 cm. long, 

 glabrous, often conspicuously banded. — Pinelands, L. keys. — [E. K.] 



2. C. grammica (Spreng.) Pollard. Stem densely pubescent: leaflets 6-16; 

 blades elliptic, oblong, or obovate, mucronate, subcoriaceous, canescent beneath, 



