JACKSONIA. CAPP ARID ACE M. 67 



CLEOME. 



1 JACKSONIA Raf. Med. Repos. v, 352. 

 POLANISIA Raf. Journ. de Phys. 98. (1819). 



Annual, ill-scented and mostly glandular herbs, with simple or 

 3-9 foliolate petioled leaves, and yellowish, rose-color or white 

 flowers in leafy-bracted racemes. Sepals 4 deciduous, lanceolate, 

 sometimes connate at base. Petals on claws or sessile, equal or 

 unequal, torus small depressed. Stamens 832 inserted below 

 the torus. Pods erect on spreading pedicels, membranaceous, 

 very shortly stipitate, elongated, compressed or cylindrical, many- 

 seeded, dehiscent from the top downward. Seeds round-reniform, 

 rugose or reticulated. 



J. trachysperma Greene Pitt, ii, 175. Glandular-pubescent, erect 6- 

 24 inches high : leaves 3-foliolate, leaflets lanceolate %-2 inches long, 

 acute, about equalling the petioles, nearly sessile : floral bracts mostly 

 simple, ovate to lanceolate, shortly petioled petals 3-5 lines long, 

 with slender claws as long as the sepals, and an emarginate blade: 

 stamens 12-19, filaments exserted: style 2-3 lines long: pods l-2 inches 

 long, very rarely on a short slender stipe: seeds finely pitted and often 

 warty. Oregon and Idaho to Brit. Columbia, Kansas and southward to New 

 Mexico and Texas. 



2 CLEOME L. Syst. Nat. ed. 1. 



Erect branching annuals; with palmately 3-8 foliolate 

 leaves and yellow or purple flowers, in bracteate racemes. Sepals 

 4, sometimes united at base. Petals with claws or sessile. Sta- 

 mens 6, upon the small torus. Pods linear to oblong, stipitate, 

 many-seeded : style short or none. Pods pendant on spreading 

 pedicels, dehiscent from the base upward. Seeds globose-reni- 

 form to ovate. Ours all of 



EUCLEOME Gray Syn. Fl. i, 183. Torus little or not at all 

 columnar below the stamens, but commonly thickened, and bear- 

 ing a glandular projection behind the ovary : this in all our spe- 

 cies raised on a slender stipe or carpophore. Cleon>e EndL 



* Calyx 4-cleft, tardily deciduous, petals indistinctly if at all 

 unguiculate. 



C. serrnlata Pursh. Fl. ii, 441. C. integrifolia T. & G. FL i, 122. 

 Somewhat glaucous, 2-3 feet high, widely branching; leaves 3-foliolate; leaf- 

 lets oblong to lanceplate, or the uppermost linear, entire, submucronate: ra- 

 cemes sometimes nearly a foot long: flowers large, showy, reddish-purple, 

 rarely white: sepals united to the middle, persistent; segments triangular- 

 acuminate: petals with very short claws, stamens equal: pods oblong-lin- 

 ear, compressed, much longer than the stipe. On watercourses, from the 

 Columbia river to Colorado, New Mexico and Dakota. 



C. lutea Hook. Fl. i, 70, t. 25. Glabrous or slightly pubescent ; 1-3 

 feet high: leaves 5-foliolate: leaflets linear to oblong-lanceolate. 1-2 inches 

 long acute, short-petiolulate. equalling the petioles; flowers bright yellow: 

 sepals ovate-lanceolate, acuminate, glabrous; petals broadly lanceolate, very 

 short clawed, 3-4 lines long: pod 9-15 lines long, about 2 lines broad, 

 torulose, equalling or longer than the stipe. On sandy banks along the 

 Columbia river, and from Wyoming to Colorado and Nevada. 



* * Sepals distinct to the base, deciduous. Petals not distinctly 

 unguiculate. 



