482 FABACEAE 



12. P. cuspidata Pursh. Steins strigose or gkbrate, erect, 4-6 dm. high, 



with spreading branches; leaflets 5, 2-4 cm. long, obovate to elliptic, glabrate 



above, grayish strigose beneath; spikes head-like, 2-5 cm. long; calyx strigose, 



enlarged in frmt; tube in flowers 4-5 mm. long, gibbous above; lobes ovate to 



lanceolate-acuminate, the upper two united half their length, 4 mm. long, the 



lower long-cuspidate, 6-9 mm.; corolla blue, 15-20 mm. long; pod strigose, about 



8 mm. long, ovoid. Sandy soil, hillsides: Minn.— Ark.— Tex.— N.M.— Mont. 

 Plain, Ap-Jl. 



13. P. esculenta Pursh. Stem erect, 1-3 dm. high, hirsute; leaflets 5, 2-6 

 cm, long, obovate to oblong, glabrous above, strigose beneath; spike short and 

 dense, 2-8 cm. long; calyx-tube about 5 mm. long, gibbous above, lobes in anthe- 

 sis lanceolate, the upper four 6 mm. long, the lowest 8 mm.; corolla about 15 mm. 

 long; body of the pod ovoid, 6 mm. long; b-eak 15 mm. long. Prairies and plains: 

 bask.— VVis.— Mo.— Okla.— Mont. Plain— Sub mouL My-Jl. 



14. P, hypogaea Nutt. Stem very short, strigose; leaflets 5-7, 2-5 cm. long, 

 Imear or linear-lanceolate, glabrous or nearly so above, strigose beneath; peduncles 

 1-5 cm. long, strigose; spike head-like; calyx-tube 4 mm. long, gibbous above; 

 upper 4 lobes lance-subulate, 5 mm. long, the lowest broadly-lanceolate, in 

 flowers 7-10 mm. long; corolla about 12 mm. long. Dry plains: Neb.— Tex.— 

 N.M.--Mont. Plain, Je. 



16. P. megalantha Woot. & Standi. Stem very short; leaflets 5-6, obo- 

 vate, 1-3 cm. long, densely white-strigose beneath, less densely so above; peduncles 

 » cm-long; raceme 2 cm. long; calyx-tube 5-6 mm. long, gibbous above; lobes 

 all subulate. Hills: n N.M.— w Colo.— e Utah. Son, Je. 



1 * ^^i' P- ™®Pt^\tica S. Wats. Stem very short; leaflets 5, obovate or spatu- 

 late, 1.5-2.5 cm. long, grayish strigose on both sides, rounded or retuse at the 

 apex; peduncles 1-5 cm. long, hirsute; spike head-like; calyx-tube 8 mm. long, 

 gibbous above; upper 4 lobes subulate, 6 mm. long, the lowest lanceolate, 8-10 

 mm long; pod about 1 cm. long, with a straight beak. Arid regions: Ariz.— 

 s Utah. Son. My-Je. 



- }^' ■^- -^*^*^^jf' ^- Wats. Stem 1.5 dm. or less high, strigose-canescent; 

 leaflets 3-5, broadly obovate-cuneate, rounded or retuse at the apex, grayish 

 strigose on both sides; peduncles 2--5 cm. long, strigose; spike head-like; calyx- 

 tube 3 mm long, the upper 4 teeth subulate, 6-7 mm. long, the lowest 8-10 mm. 

 long; corol a about 1 cm. long; pod obovoid, 8 mm. long; beak about 1.5 cm. 

 long. And regions: s Utah— Ariz.— s CaUf.— Nev. Sm. My. 



14. PAROSELA Cav. 



Perennial or annual herbs or shrubby plants, with glandular-punctate foliage. 

 Leaves alternate, odd-pinnate, with small leaflets. Flowers perfect, in terminal 

 or lateral spikes. Calyx campanulate, its lobes nearly equal. Corolla white, 

 purple, or yellow; banner broad, long-clawed, auricled at the base; wings and keel 

 usually longer than the banner, their claws adnate to the staminal tube. Stamens 

 10 or 9, monadelphous; anthers alike. Pods usually included in the calyx, in- 

 dehiscent, 2-3-ovuled, but usually l-seeded. [Dalea Willd.] 



^"^' ^^ keel-petals inserted at the base of the staminal tube; pods exceeding the 



caljx; shrubs. (Xylodalea.) 



^^*f!^^S?f^ shorter than the tube, the upper two much broader t2ian the rest. 

 Leaflets 1-7. oblong or eUiptic. 1 P Fremontn 



Leaflets 5-11 Imear or linear-oblanceolate. 2 p' Johnsoni ' 



^' h^l^ rf^^ = w^^'^S^^ *?u^^ inserted on the staminal tube, some distance from the 

 StemTnd'l^v^''g^^^^^^^ '^^ "^^^- °^^^^^> ^^^^^^ ^^^^^^^ '^^^- (Eudale..). 



Annual: spike dense, cylindric. 4 P nlonpnir aides 



Perennial; spike either rather lax or few-flowered ^ atopecurotaes. 



^L}^^S}^^^^^'^ ^^^ ^^^^ elongate, several-flowered; bracts obovate. per- 

 sistent.enclosmg the calyx. 5 p enneandra 



cMuous ^^"^^ head-like, 2-lO-flowered, very short; br^ts ovate. de- 



Stem and leaves pubescent. ^' ^- f^^"^^^^' 



■lobes short, ovate, not subulate-tipped; spike lax: orostrate or decumbent 



\'lllous herbs. 



7. P. lanaia. 



k 



