CASSIACEAE 587 



Leaf-blades 40-54-foliolate. 12. C. aspera. 



Leaf-blades 16-24-foliolate. 13. C. Simpsonii. 

 h. Plants glabrate or merely puberulent. 



Leaflets 20-25 pairs, the blades narrowly linear. 14. C. mtiltipinnata. 



Leaflets 6-14 pairs, the blades broadly linear. 15. C. niciitans. 



1. Chamaecrista grAmmica (Spreng. ) Pollard. Plant erect, branching. Stem 

 herbaceous or suflruticose at base, densely pubescent : leaflets 6-16, the blades elliptical or 

 subobovate, mucronate, subcoriaceous, canescent beneath, 1 cm. long, 3 ram. wide : 

 petiolar gland obsolescent, sessile, compressed : stipules aculeate : peduncles 1-flowered : 

 flowers large : pods pubescent, linear, mucronate, 3-4 cm. long, 4 mm. wide : seeds few. 



In sand, Florida Keys. Also in Cuba. 



2. Chamaecrista Mississippi6nsi.s Pollard. Plant decumbent, branching, suffruti- 

 cose. Stem glabrous : leaflets 18-28, the blades subcoriaceous, pubescent, small, elliptical 

 or obovate, mucronate, basally a.symmetrical, 5 mm. long, 1-1.5 mm. wide : petiolar 

 gland minute, cupuliform, sessile : stipules linear, membranaceous, persistent : peduncles 

 1 cm. long, axillary, 1 -flowered : flowers large : calyx-lobes lance-linear, slightly pubes- 

 cent, not surpassing the petals : pods linear, sparsely pubescent, 2.5 cm. long, 4 mm. wide : 

 seeds 4 or 5, ovoid, rather large. 



In sandy soil, Alabama and Mississippi. 



3. Chamaecrista cin^rea (Cham. & Schlecht. ) Pollard. Plant suffruticose. Stem 

 branching, puberulent : leaflets 20-40, clothed with cinereous pubescence, the blades 

 narrow, linear-falcate, acute, 1 cm. long, 2mm. wide: petiolar gland small, cupuliform, 

 stipitate : stipules filiform or linear : peduncles 1-2 -flowered, rather short, axillary or 

 supra-axillary : flowers large : pods linear, pilose or sparsely pubescent, prostrate, some- 

 what elongated, 5-5.5 cm. long, 5 mm. wide. 



In dry ground, Texas and Mexico. 



4. Chamaecrista brachiata Pollard. Plant 1 m. high or less. Stem tough, freely 

 branching, glabrate : leaflets 20-28, the blades linear, glabrous on both surfaces, the mid- 

 vein somewhat excentric, the obtuse apex tipped with a slender cusp : petiolar gland very 

 much depressed, discoid : stipules lanceolate, acuminate, striate, and strongly persistent : 

 flowers large, 3 cm. in diameter, the broad yellow petals considerably exceeding the 

 lanceolate scarious calyx-lobes : pods linear, 6-7 cm. long, quite glabrous when mature : 

 seeds quadrate, oblong, compressed on both sides. 



In sandy pine lands, peninsular Florida. 



5. Chamaecrista prociimbens (L. ) Greene. Plant prostrate. Stem branching 

 from a fruticose base : leaflets 18-24, pubescent, the blades very small, linear, acutely sub- 

 falcate, 5 mm. long, 1 mm. wide, on a stout rachis : petiolar gland minute: stipules 

 cordate, foliaceous : peduncles rather long, 1-flowered, axillary : flower large : pods linear, 

 puberulent, somewhat crisped, with prominent sutural margins, 3.5 cm. long, 4 mm. wide. 



In dry soil, Texas and Mexico. 



6. Chamaeciista fasciculcita (Michx. ) Greene. Plant erect or spreading. Stem 

 herbaceous, glabrous: leaflets 16-28, tlie blades oblong-elliptical, acute or mucronate, 1.5 

 cm. long, 3 cm. wide : petiolar gland sessile, compressed, truncate : stipules lance-linear, 

 membranaceous : peduncles numerous, su[)ra-axillary, 3-5-flowered : flowers large : sepals 

 membranaceous, lanceolate, equalling or exceeding the petals: pods elongated-linear, 

 subrostrate, pubescent, 5 cm. long, 5 mm. wide : seeds numerous. 



In fields and meadows, Maine to Minnesota, Kansas, Florida and Mexico. 



7. Chamaecrista robusta Pollard. Plant erect, 1-2 m. tall. Stem branching, 

 herbaceous, densely pubescent, stout : leaflets glabrate, 20-30, blades elliptical, obtuse, 

 finely cuspidate, 2 cm. long, 5-6 mm. wide, occasionally an odd one terminating the 

 rachis : petiolar gland orbicular, truncate, compressed, sessile : stipules foliaceous, 

 broadly lanceolate : peduncles 1-3-flowered, supra-axillary : flowers large and conspicuous : 

 calyx-lobes small, membranaceous, lanceolate, only half as long as the petals : pods nar- 

 row, linear, pubescent, 4 cm. long, 5 mm. wide. 



In upland regions, Kentucky to northern Alabama and Louisiana. 



8. Chamaecrista b^llula Pollard. Plant slender, erect, 3-4 dm. high, the branches 

 ascending. Stems and rachises puberulent : leaflets 10-20, the blades linear-elliptical, 

 glabrous, 6-10 mm. long, of thin texture, minutely apiculate, the midvein rather excentric, 

 not prominent : petiolar gland crateriform, subsessile : stipules linear, acuminate, mem- 

 branaceous, striate: peduncles 1-flowered, almost always bibracteolate, supra-axillary: 

 corolla 2 cm. broad : calyx-lobes -linear, attenuate, nearly equalling the obovate petals : 

 pods 6-7 cm. long, linear, puberulent : seeds ovoid, compressed, oblique. 



In sand. St. Vincent, Florida. 



