FABACEAE 601 



rect or ascending : pedicels 5-9 mm. long, appressed -pubescent : bracts ovate to ovate- 

 lanceolate, mostly shorter than the pedicels : calyx appressed-pubescent ; lobes lanceolate, 

 acute, nearly as long as the tube : corolla cream-yellow, about 2 cm. long ; standard with 

 a suborbicular blade 14-16 mm. broad. 

 On prairies, eastern Texas. Spring. 



22. Baptisia cuneata Small. Foliage glabrous, slightly discolored in drying. Stems 

 3-5 dm. tall, sparingly branched : stipules lanceolate : leaflets 3, the blades leathery, cuneate, 

 sometimes slightly cuneate-rhomboidal, 3-6 cm. long, often mucronulate, barely reticulated : 

 racemes about 1 dm. long, slender, short-ped uncled : pedicels slender, 1.5-2.5 cm. long: 

 tacts lanceolate or ovate-lanceolate, acuminate, deciduous : calyx campanulate, nearly 1 

 cm. long, glabrous within ; lobes, except the upper one, ovate, acute : corolla pale cream- 

 colored ; standard broader than high, nearly 2 cm. broad, notched, abruptly narrowed into 

 the claw ; wings and keel-petals with blades 2 cm. long : pods spreading, the body about 2 

 cm. long, long-stipitate and long-beaked. 



In sand, along or near the coast, Texas. Spring. 



23. Baptista laevicaulia (A. Gray) Small. Foliage nearly glabrous, turning black- 

 ish in drying. Stems 3-7 dm. tall, branching : leaflets 3, the blades leathery, obovate or 

 cuneate-obovate, 4-8 cm. long, mucronulate to retuse at the apex, delicately reticulated : 

 racemes somewhat declined, 1-3 dm. long, 1-sided : pedicels 3-6 cm. long, subtended by 

 ovate or oblong-lanceolate acute bracts : calyx pubescent within, 1 cm. long, prominently 

 nerved ; lobes, except the upper one, lanceolate or ovate-lanceolate, about as long as the 

 tube : corolla cream-yellow ; standard orbicular-ovate, 2 cm. in diameter, deeply cleft, 

 rather abruptly narrowed into the short claw ; wings and keel-petals with blades over 2 cm. 

 long : pods firm, the body oval, 3-4 cm. long, with a slender curved beak and a stipe at 

 least as long as the calyx. 



On prairies, Louisiana and Texas. Spring and fall. 



24. Baptisia leucophafea Nutt. Foliage villous. Stems 3-8 dm. tall, widely branch- 

 ing : leaflets 3, the blades leathery, oblong, oblanceolate or linear-oblong, 3-10 cm. long, 

 obtuse or retuse at the apex, strongly reticulated : racemes 1-2 dm. long, one-sided : pedicels 

 1-3 cm. long, subtended by lanceolate or ovate-lanceolate acute or acuminate bracts : calyx 

 strigillose ; tube campanulate, 7-8 mm. long ; lobes except the upper one, triangular, 

 much shorter than the tube : corolla white or cream-colored ; keel-petals 20-25 mm. long ; 

 standard with an orbicular blade fully 2 cm. broad : pods rather firm, the body ovoid or 

 oval, 4-5 cm. long, slender-beaked, short-stipitate. 



On prairies, Michigan to Minnesota, Louisiana and Texas. Spring. 



25. Baptisia australis (L. ) R. Br. Foliage glabrous, more or less glaucous, turning 

 black in drying. Stems 6-12 dm. tall, widely branched : stipules usually lanceolate : 

 leaflets 3, the blades leathery, cuneate to oblanceolate or oblong-oblanceolate, 4-8 cm. 

 long, obtuse, notched or mucronulate : racemes stout, 1-3 dm. long : pedicels stout, 5-10 

 mm. long : bracts lanceolate or oblong-lanceolate : calyx campanulate, 1 cm. long ; lobes 

 triangular or ovate, much shorter than the tube : corolla indigo-blue ; keel-petals 25-30 

 mm. long ; standard with a reniform-orbicular blade about 2 cm. broad : pods ascending, 

 the body oblong, 3-4 cm. long, short-beaked, the stipe surpassing the body. 



In rich soil, Pennsylvania to Kansas, Alabama and Texas. Spring. 



5. CROTALARIA L. 



Annual or perennial herbs, or shrubby plants, with erect or procumbent stems. 

 Leaves alternate, often with decurrent stipules : blades compound, sometimes 1-foliolate : 

 leaflets 3-7, or 1, with entire blades. Flowers perfect, solitary or in terminal racemes. 

 Calyx pedicelled : lobes 5, often nearly distinct, the 2 upper and the 3 lower often par- 

 tially united into lips. Corolla yellow or rarely blue : standard with a dilated blade : 

 keel-petals scythe-shaped or angled. Stamens monadelphous : anthers alternately small 

 and versatile and larger and erect. Ovary terminating in a curved style. Ovules 2-many. 

 Pod globular to cylindric, 2-valved, sometimes leathery. Seeds becoming loose in 

 the pod at maturity. RATTLE-BOX. 



A. Leaves with 1-foliolate blades. 



a. Standard with a blade much less than 2 cm. broad : blades of the upper leaf- 

 lets of a linear-oblong or lanceolate type : stipules more or less decurrent. 

 Leaflets with orbicular or oval blades predominating. 



Stems and peduncles with relatively long, loose or spreading hairs. 1. C. rotundifolia. 



Stems and peduncles with short appressed hairs. 2. C. maritima. 



Leaflets with linear, lanceolate or oblong blades predominating. 



* Stems and peduncles with loose or spreading hairs : lower and upper leaves 



