PA PIL ION A CEA E 545 



7^15 cm. long; peduncles equalling or shorter than the leaves ; flowers purplish ; 

 pod 9-12 mm. long, transversely wrinkled and roughened with points. Along 

 rivers, Mo. to Ohio, S. Ont., Ky. and S. Car. June-July. 



15. AMORPHA L. 



Glandular-punctate shrubs, with odd-pinnate leaves, and small violet blue or 

 white flowers, in terminal spike-like racemes. Calyx-teeth nearly equal, or the 

 lower ones longer; standard obovate, erect, clawed, folded around the stamens and 

 style; wings and keel none; stamens monadelphous below; ovary 2-celled; style 

 curved; stigma terminal; pod short, oblong, curved, nearly indehiscent, 1-2- 

 seeded. [Greek, deformed, four petals being absent.] About 10 species, natives 

 of N. Am. and Mex. 



Tall shrub ; leaflets 2.5-5 cm - long; pod usually 2-seeded. i. A. fruticosa. 

 Low shrubs ; leaflets 9-15 mm. long; pod i-seeded. 



Glabrous or nearly so ; spikes commonly solitary. 2. A. nana. 



Densely canescent; spikes commonly clustered. 3. A, canescens. 



1. Amorpha fruticosa L. FALSE OR BASTARD INDIGO. (I. F. f. 2101.) A 

 shrub 1.5-6 m. high. Leaves petioled, 1.5-4 dm. long; leaflets 11-21, distant, 

 short-stalked, oval or elliptic, obtuse and mucronulate, or sometimes slightly emar- 

 ginate, entire; racemes dense, 7-15 cm. long; flowers 6-9 mm. long; standard 

 violet-purple, 2-3 times as long as the calyx, emarginate; stamens exserted; pod 

 glandular, thick-stalked, 6-9 mm. long, acute. Along streams, Ohio to Minn., 

 Manitoba, Fla., Colo, and Chihuahua. Also escaped from cultivation in the Mid- 

 dle and Eastern States. May-July. 



2. Amorpha nana Nutt. FRAGRANT FALSE INDIGO. (I. F. f. 2102.) A low 

 bushy shrub, seldom more than 3 dm. high. Leaves short-petioled, numerous, 3-. 

 8 cm. long; leaflets 13-19, rigid, short-stalked, oval or oblong, rounded or emar- 

 ginate and mucronate at the apex; flowers fragrant; standard purplish, about 4 mm. 

 long; calyx-teeth acuminate; pod short. Prairies, Iowa to Minn., Dak. and the 

 N. W. Terr. May. 



3. Amorpha canescens Pursh. LEAD-PLANT. SHOE-STRINGS. (I. F. f. 

 2103.) A bushy, white-canescent shrub, 3-9 dm. high. Leaves sessile or very 

 nearly so, numerous, 5-10 cm. long; leaflets 21-49, approximate, almost sessile, 

 oval or short- lanceolate, rounded or truncate at the base, less pubescent above than 

 beneath; spikes 5-18 cm. long; calyx-teeth lanceolate; standard bright blue, nearly 

 orbicular or obcordate. about 4 mm. long; pod slightly exceeding the calyx. Prai- 

 ries, Ind. to Minn., Manitoba, La. and Tex. Named from its leaden hue, not z& 

 indicative of lead. July-Aug. 



16. PAROSELA Cav. 



Herbs, or sometimes shrubs, with usually glandular-punctate foliage, odd-pin- 

 nate leaves, minute stipules, and small flowers in terminal or lateral spikes. Calyx- 

 teeth nearly equal; standard cordate or auriculate, clawed; wings and keel mainly 

 exceeding the standard, adnate by their claws to the lower part of the stamen-tube; 

 stamens 10 or 9, monadelphous; ovules 2 or 3; style subulate; pod included in the 

 calyx, membranous, mostly indehiscent and i-seeded. [Anagram of Psoralea.~\ 

 About 1 10 species, natives of America. In addition to the following some 42 others 

 occur in the western U. S. 



Spikes elongated, narrow, loosely flowered. 



Foliage glabrous ; corolla white ; leaflets linear. i. P. enneandra. 



Foliage pubescent ; corolla purple or red ; leaflets obovate. 2. P. lanata. 



Spikes oblong to ovoid, thick, densely flowered. 



Foliage glabrous ; corolla pink or white ; leaflets 15-41. 3. P- Dalea. 



Foliage pubescent ; corolla yellow to red; leaflets 3-9. 



Plant 3-6 dm. high : calyx-teeth acuminate. 4. P. aurea. 



Plant not over 2.5 dm. high ; calyx-teeth aristate. 



Spikes 1-3 cm. long; bracts shorter than the calyx, mucronate. 



5. P. nana. 

 Spikes 3-9 cm. long; bracts as long as the calyx, or longer, acuminate. 



6. P.Jamesii. 



