PsoHALEA. LEGUMINOSA:. 301 



10. p. canescens (Mjchx.) : canesccntly pubescent ; lower leaves 3-foiio- 

 late, upper ones uuifoliolate, on short petioles; leallets orbicular-obovate ab- 

 ruptly narrowed at the base and petiolulate, doited with f^lands; stipules sub- 

 ulate, about as long as the petiole ; racemes longer than the leaves, 4-7-flo\v- 

 ered, the flowers pedicellate; calyx inflated, conspicuously glandular, the 

 lower segment produced. — Mich.r. ! Jl. 2. p. 57 ; Pursh ! Ji. 2. p. 473 ; JJ/l 

 sk. 2. p. 195 ; DC. prodr. 2. p. 220. 



Sandy soils. North Carolina ! to Florida ! May. -July. — Root fusiform. 

 Stem much branched, 2-3 feet high, spreading. Leaflets an inch or more 

 wide, often slightly emarginate. Calyx hirsute when young. Corolla at 

 first blue, then yellowish {Le Conte). Legume with a short ensiform point, 

 very glandular, not wrinkled. 



11. P. arsrophylla (Pursh): very silky and silvery, erect, divaricately 

 branched ; leaves o-5-foliolate; leaflets elliptical-lanceolate ; spikes peduncu- 

 late, interrupted, longer than the leaves; bracts ovate-lanceolate; flowers 

 nearly sessile, 2-3 to each bract; lower tooth of the calyx very long. — Pursh ! 

 fl. 2. 'p. 475; Hook. ! fl. Bor.-Am. 2. p. 13G, t. 53. P. incana, Xutt. 1 gen. 

 2. p. 102; DC. prodr'. 2. p. 219. 



Dry open plains on the Missouri. Lewis ! Nuttall ! on the Saskatchawan 

 &c., Drummmid! Falls of St. Anthony, Dr. Houghlon ! July. — Plant 

 1-2 feet high, every part densely clothed with soft silvery-white Oppressed 

 hairs. — Leaflets 1-2 inches long. Stipules subulate. Spikes about twice as 

 long as the leaves. Lower tooth of the calyx as long as the corolla. Petals 

 blue: vexillum obovate, the auricles small and callous. 



12. P. campestris (Nutt. ! mss.) : " densely canescently hirsute with short 

 white appressed hairs ; leaves 5-foliolate, the uppermost sometimes 3-folio- 

 late ; leaflets linear and oblong-linear, rather obtuse, nearly glabrous above ; 

 peduncles elongated; spike interrupted; bracts 3-flowered, broadly ovate 

 acuminate ; lower tooth of the calyx elongated. 



" Plains of the Platte. June. — Allied to the preceding, but much less hir- 

 sute and silvtry, and more branching. Leaflets 1-li inch long and 1-2 lines 

 wide. Stipules linear. Bracts of the flower-buds nearly orbicular." Nuttall. 



13. P. cryptocarpa: stem somewhat divaricately branched, canescently 

 hairy with an appressed pubescence ; leaves 5-fo!iolate ; leaflets elliptical-ob- 

 long, rather obtuse, mucronate, about as long as the petiole, punctate ; stipules 

 subulate; peduncles longer than the leaves; spikes ovate, compact; bracts 

 lanceolate, cuspidate, shorter than the flower; calyx conspicuously glandular 

 large, entirely covermg the ovate nearly glabrous scarcely pointed legume; 

 the teeth triangular-lanceolate, acuminate, nearly equal, the 2 upper ones 

 united to the middle. 



Arkansas, Dr. Leavenworth ! Texas, Drummond .' — Stem 1-2 feet high 

 terete, when old nearly glabrous. Leaflets U inch long. Calyx somewhat 

 inflated, gibbous at the base. Legume membranaceous, slightly tipped with 

 the base of the style, not wrinkled. 



14. P. brachiata (Dougl.): stem erect, somewhat branched, nearly hispid 

 with long spreading hairs; leaves 5-foliolate, hirsute with appressed hairs; 

 leaflets elliptical or obovate-oblong, rather obtuse; peduncles elongated; 

 spikes oblong; flowers erect, sessile; bracts as long as the flower ; tt-t'th of 

 the calyx lanceolate, the 2 upper ones united above the middle. — Hook.! fl 

 Boi.-Am. 1. p. 137, t. 53. 



Plains of the Saskatchawan, Drummond ! Douglas. Root fusiform 

 thick, somewhat farinaceous. Stem 12-18 inches high. Stipules lanceolate' 

 large. Leaves U inch long. Racemes 2-4 inches in lensth. Brjcts lanceo- 

 late, foliaceous, about as long as the flowers. Calyx somewhat inflated, lower 



