Vou. II.J PEA FAMILY. 287 
3. Amorpha canéscens Pursh. Lead-plant, 
Shoe-strings. (Fig. 2103.) 
Amorpha canescens Pursh, Fl. Am. Sept. 467. 1814. 
A bushy shrub, 1°-3° high, densely white-canescent 
all over. Leaves sessile or very nearly so, numerous, 
2/-4 long; leaflets 21-49, approximate, almost sessile, 
oval or short-lanceolate, obtuse or acutish and mucron- 
ulate at the apex, rounded or truncate at the base, 4//— 
7’’ long, 2/’’-3/’ wide, less pubescent above than be- 
neath; spikes usually densely clustered, 2’-7’ long; 
calyx-teeth lanceolate; standard bright blue, nearly 
orbicular or obcordate, about 2’’ long; pod slightly 
exceeding the calyx, 1-seeded. 
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Prairies, Indiana to Minnesota and Manitoba, south to AKT); \ 
Louisiana and Texas. Named from its leaden-hue, notas (77% 
indicative of lead. July—Aug. (/; 
16. PAROSELA Cav. Desc. 185. 1802. 
[DaLEaA Willd. Sp. Pl. 3: 1336. 1803. Not P. Br. 1756.] 
Herbs, or sometimes shrubs, with usually glandular-punctate foliage, odd-pinnate leaves, 
minute stipules, and small purple white or yellow 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. Sta- 
mens Io or 9, monadelphous; anthers uniform. Ovary sessile or short-stalked; ovules 2 or 3; 
style subulate. Pod included in the calyx, membranous, mostly indehiscent and 1-seeded. 
[Anagram of Psoralea. | 
About 110 species, natives of western North America, Mexico and the Andean region of South 
America. In addition to the following some 42 others occur in the western United States. 
Spikes elongated, narrow, loosely flowered. 
Foliage glabrous; corolla white; leaflets linear. 1. P. enneandra. 
Foliage pubescent; corolla purple; leaflets obovate. 2. P. lanata. 
Spikes oblong, thick, densely flowered. 
Foliage glabrous; corolla pink or white; leaflets 15-41. 3. P. Dalea. 
Foliage pubescent; corolla yellow; leaflets 5-9. 4. P. aurea. 
1. Parosela enneandra (Nutt.) Britton. 
Slender Parosela. (Fig. 2104.) 
Dalea enneandra Nutt. Fraser’s Cat. 1813. 
Dalea laxiflora Pursh, Fl. Am. Sept. 741. 1814. 
Parosela enneandra Britton, Mem. Torr. Club, 5; 106. 
1894. 
Erect, glabrous, 1°-4° high, with numerous slen- 
der ascending branches. Leaflets 5-11, linear or 
linear-oblong, obtusish, 2//-5’’ long, 1%4’/-1’’ wide, 
narrowed at the base, nearly sessile; spikes numer- 
ous, 2’-5’ long, loosely flowered; bracts obtuse, 
nearly orbicular, punctate, membranous-margined, 
1%4’’ long, often mucronate; flowers 4//-6’ long; 
calyx-teeth subulate, beautifully plumose, shorter 
than the white corolla; standard small, cordate; 
keel exceeding the wings; stamens 9. 
Prairies, Iowa to Nebraska and Colorado, south to 
Mississippi and Texas, June-Aug. 
