130 American Midland Naturalist Monograph No. 7 



3. Leaflets lanceolate, acuminate; stipules lanceolate; petiolar 

 gland globose; petals 1.5-2 cm long; plants annual; waste 

 ground, occasional; native of the tropics; Chicago, Moffatt 



in 1897. Coffee-weed C. occidentalis L. 



3. Leaflets elliptical, mucronate; stipules setaceous; petals 10-12 

 mm long; plants perennial, native. 

 4. Ovary villous; petiolar gland clavate; pods loosely villous, 

 the segments about as long as broad ; seeds flat, sub- 

 orbicular; alluvial soil, roadsides, or in open woods. 



Jidy-Aug - - - C. hehecarpa Fern. 



4. Ovary strigose; petiolar gland ovoid; pods glabrous or 

 sparsely hirtellous, the segments much shorter than 

 broad; seeds plump, ellipsoid or obovoid; roadsides and 



alluvial soil. July-Aug. [C. medsgeri Shafer] 



C. marilandica L. 



2. Leaflets 4-6, obtuse; gland between the lowest pair of leaflets; 

 pods 10-15 cm long, 2-5 mm wide; waste ground, occasional; 



native of the tropics. July-Sept C. tora L. 



1. Leaflets 5-20 mm long, 2-5 mm wide; corolla irregular, the petals 



unequal; calyx-lobes acuminate; anthers all perfect; stipules 



persistent; leaflets 12-28, somewhat sensitive to the touch. 



5. Flowers 2-4 cm broad, slender-pedicelled; anthers 10, unequal; 



pods 4-6 cm long; fields and meadows; common. July-Oct. 



Partridge-pea. [C. chamaccrista sensu auth., non L.; C. 



robusta Pollard] C. jasciculata Michx. 



5. Flowers 5-10 mm broad, short-pedicelled; anthers 5, nearly 

 equal; pods 2.5-4 cm long; woods and fields; Cook, Hender- 

 son, and Kankakee counties, and southward. July-Sept 



C. nictitans L. 



7. Cladrastis Raf. — Yellow-wood 

 C. lutea ( Michx. f.) K.Koch. Rich woods, rare; Alexander and 

 Gallatin counties. 



8. Baptisia Vent. — Wild Indigo 

 1. Leaves glabrous; racemes bractless or the bracts minute; calyx 

 6-8 mm long; pods ellipsoid, 2-3 cm long; prairie soil and open 



woods throughout 111. June-July B. leucantha T. & G. 



1. Leaves pubescent; racemes conspicuously bracted; calyx 6-10 mm 

 long ; pods ovoid, 4-5 cm long at maturity ; prairie soil and open 

 woods throughout 111. May-June. [B. hractcata of auth., not 

 Muhl.j B. Icucophaea Nutt. 



9. Crotolaria L — Rattle-box 



1. Stem slender, 10-50 cm tall; leaves elliptical, 3-8 cm long; calyx 

 villous; racemes 2-4-flowered; seeds 2-3 mm in diameter; dry 

 soil, nearly throughout 111. June-Sept C. sagittalis L. 



