84 CASSIACEAE. 



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. 

 Nat of Trop. Am. F. K. (Bah., Cuba, Ant.) 



4. O. 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. F. K. (Bah., Cuba.) 



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

 nate: stipules 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. SEXSITIVK -I-LANT. 



Tall woody plants: smaller petals over 15 mm. long: pod glabrous. 1. f.bruchiata. 

 Low herbaceous plants: larger petals less than 10 mm. long: pod 



pubescent 



Stem and branches erect or ascending: leaflets mostly 4<> .~>4. 2. C. aspera. 

 Stem and branches prostrate or decumbent : leaflets mostly 



i: ::. 3. C. SlmptonU. 



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

 leaflets 20-28; blades linear, cuspidate, glabrous, mid vein 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. 



2. C. aspera (Muhl.) Greene. Stem copiously hirsute, erect or ascent! ing: 

 leaflets 40-54 ; blades narrowly linear, 15 mm. long or less, acuminate : petiolar 

 gland slender, erect, elongate: stipules linear-lanceolate: sepals 5-7 mm. long, 

 sparingly long-hairy: standard somewhat reniform, crenate, only about A as 

 long as the large wing-petal: pod hirsute, 2.8 cm. long, 6 mm. wide. Pine- 

 lands and edges of hammocks. F. K. (Bah.) 



3. O. Simpson!! Pollard. Stem branching from the base, the branches pros- 

 trate or decumbent, more or less puberulent and often partially hirsute: leaf- 

 lets 16-34; blades glabrous or nearly so, narrowly linear, 8 mm. long, or less, 

 each tipped with a black, rigid acuminate tip: petiolar gland minute, stipitate, 

 obconical: stipules lanceolate: sepals 5-7 mm. long, sparingly short-pubescent: 

 standard obovate, 6-7 mm. long, about as long as the large wing-petal: pods 

 linear, hirsute, 2 cm, long, 4-5 mm. wide. Pinelands. F. K. 



3. POINCIANA [Tourn.] L. Erect much-branched shrubs or trees. 

 LtrtlrtH usually few and relatively large: blades rather broad. Sepals much 

 shorter than the petals. Blades of the short-clawed petals not flabellate. 

 Pod flat, narrow, the valves leathery. Seeds flattened. 



1. P. pulcherrima L. Shrub or small tree: leaflets glabrous; blades oblong 

 to cuneate, 15-25 mm. long: sepals 15-16 mm. long: corolla mainly r.-l; 

 standard 25-27 mm. long: filaments 40-45 mm. long: pods 9-13 cm. long. 

 >.!< nn.l cultivated .grounds. Nat. of the W. Indies. F. K. (Bah., 

 Cvba, Ant.) BARBADOS-FLOWER, 



4. GUILANDINA L. Reclining or spreading prickly shrubs. Leaflets 

 relatively few or numerous and large: blades broad. Sepals as long as the 

 petals or nearly so. Blades of the narrow petals mainly spatulate. Pod nearly 

 M wide as long, turgid. Seeds turgid. 



Leave* with follareotu stipule* : *ed fray or lead-colored. 1 



Leave* without ntlpulec: seeda yellow. ':nr/ur. 



