588 CASSIACEAE 



9. Chamaecrista chamaecristoides (Collad. ) Greene. Plant low and spreading, but 

 not prostrate. Stems divaricately much branched, obscurely strigose-pubescent : leaflets 

 12-24, scattered, linear-elliptical, glabrous, 9 mm. long, 2 to 3 mm. broad : petiolar 

 gland small, circular, sessile, depressed : flowers solitary on filiform mostly supra-axillary 

 peduncles : calyx-lobes linear, scarious, strongly ciliate : petals large, obovate, much ex- 

 ceeding the sepals, 1.5 cm. long, 1.5 cm. broad : pods not seen. [ Cassia depressa Pollard.] 



In dry ground, Missouri to Florida. 



10. Chamaecrista littoralis Pollard. Plant erect. Stem diffusely branching, the 

 branchlets and younger shoots finely puberulent : leaflets 12-24, the blades elliptic, prom- 

 inently cuspidate, 5-8 mm. long, midvein more or less excentric : stipules persistent, lan- 

 ceolate, sharply attenuate, 3-5-nerved, the margin usually hispidulous : petiolar gland 

 cupuliform, practically sessile : flowers about 2-2.5 cm. wide, on slender solitary peduncles 

 1-1.5 cm. long: petals exceeding the linear-lanceolate scarious calyx-lobes : pods densely 

 pubescent, not at all falcate, 4-5 cm. long : seeds quadrate, compressed, dark brown. 



Near the coast, Mississippi and Louisiana. 



11. ChamaeciistaTiacyi Pollard. Plant erect, herbaceous. Stem freely branching, 

 the branches inclined to be lax and spreading, like the rest of the foliage densely clothed 

 with a slight glandular pubescence : leaflets 8-18, the leaflets oblong or elliptical, very 

 small, 5-8 mm. long : petiolar gland cupuliform, sessile near the base of the rachis : 

 stipules setaceous : flowers solitary, on slender axillary or supra-axillary peduncles as long 

 as the leaves or longer, upcurved in fruit : calyx-lobes narrowly linear, acuminate, about 

 equalling the petals : corolla 1-1.5 cm. wide : pods pubescent, 4 cm. long, rather moderately 

 rostrate. 



In sandy soil, Koshtaw, Mississippi. 



12. Chamaecrista aspera (Muhl. ) Greene. Plant tall, erect, herbaceous. Stem 

 hispid with fulvous hairs : leaflets 40-54, the blades glabrous, narrowly linear, acuminate, 

 1 cm. long, 1.5 mm. wide : petiolar gland slender, erect, elongated : stipules linear, mem- 

 branaceous, striated : peduncles 2-3-flowered, supra-axillary, very short : flowers rather 

 larger than in C. nictitans, usually in pairs : pod hispid, somewhat obtusely linear, 2.8 cm. 

 long, 6 mm. wide : seeds few, oblique. 



In waste ground, Georgia to Florida. A variety from Alabama, with hoary-pubescent leaflets, is 

 Chamaecrista aspera Mbhrii Pollard. 



13. Chamaecrista Simpsonii Pollard. Plant low, branching from a fruticose base. 

 Stem more or less puberulent : leaflets 16-24, the blades glabrous or nearly so, small, nar- 

 rowly linear, 5 mm. long, 1 mm. wide, each tipped with a black rigid acuminate tip : 

 petiolar gland minute, stipitate, obconical : stipules foliaceous, tipped with rigid acumi- 

 nate tips similar to those on leaflets : flowers sessile or subsessile, somewhat supra-axillary, 

 5-8 mm. broad : calyx-lobes lanceolate, membranaceous, equalling the petals : pods flat, 

 linear, hirsute, subrostrate, 2 cm. long, 4-5 mm. wide : seeds few. 



In sand, Big Pine and No Name Keys, Florida. 



14. Chamaecrista multipinnata (Pollard) Greene. Plant slender, tall, erect, 

 more or less branched. Stem pubescent : leaflets 40-50, the blades 10 mm. long, 1.5 mm. 

 wide, glabrous, narrowly linear, cuspidate : petiolar gland minute, depressed-cupuliform, 

 substipitate : stipules long-acuminate, striate, foliaceous : flowers scattered, sessile, the 

 corolla quite irregular, its small yellow petals not much exceeding the narrow, scarious- 

 edged sepals : pods linear, compressed, pubescent or even hirsute, dorsally and ventrally 

 dehiscent, elastic, 2 to 2.5 cm. long : seeds 4 to 6. 



In sandy woods, Georgia and Florida to Louisiana. The low diffusely spreading form is Chamae- 

 crista multipinnata Ndshii (Pollard) Greene. 



15. Chamaecrista nictitans ( L. Moench. Plant low, herbaceous. Stems branch- 

 ing and spreading freely : leaflets glabrous, 12-28, the blades linear-elliptical, acute or 

 mucronate, 1-1. 4 cm. long, 2-3 mm. wide: petiolar gland urceolate, subsessile: stipules 

 small, foliaceous, lanceolate, striate : peduncles 1-flowered, supra-axillary : flowers small, 

 inconspicuous, subsessile : pods pubescent, submembranaceous, acute, 3.5 cm. long, 6 mm. 

 wide : seeds few. 



In woods and fields, New England, Kansas, Georgia and Louisiana. 



4. GLEDITSIA L. 



Trees, usually armed with simple or branched thorns, the bark pale, often smooth. 

 Leaves equally bipinnate or some of them merely pinnate, with stipules :' leaflets small, 

 numerous, often crenulate. Flowers small, polygamous, greenish, clustered or in axillary 

 or lateral racemes or panicles. Calyx-lobes 3-5, nearly equal, surmounting the campanu- 



