GleomeUa, CAPPARIDACE^. ci 



1. P. trachysperma Torr. & Gray. Glandular-pubescent, erect, i to 2 feet 

 high: leaves 3-luhokte ; leaflets lanceolate, i to 2 inches long, acute, about equal- 

 ling he petioles, nearly sessile; floral bracts mostly simple, ovate to lanceolate, 

 shortly petiolecl : petals 3 to 5 lines long, Mdth slender claws as long as the sepals 

 and an emargmate blade : stamens 12 to IG ; lilaments exserted : style 2 to 3 lines 

 long : pod 1 to 21- inches long, very rarely on a short slender stipe : seeds finelv 

 pitted and often warty. -Fl. i. 669; Gray, Gen. 111. i. 182, t. ll F. uninlanl 

 ulosa, lor. Pacif. R. Rep. iv. 67 ; Watson, Bot. King Exp. 34. 



From the Columbia River to Kaiisas and southward to N. Nevada and Texas. The P. unmlaruL 

 ulosa, Cav., of Mexico and New Mexico, to which it has been referred, difiers in its niSiCr 

 flowers, greatly elongated sty e, arger pods upon a stout terete stipe, and smooth seeds. The 

 eastern P. graveolens may be distinguished by its smaller flowers, shorter style, fewer and shorter 

 stamens, and smoother seeds ; its leaves are also mostly obtuse or obtusish. 



3. CLEOME, Linn. 

 Sepals 4, sometimes united at base. Petals with claws or sessile. Stamens 6, 

 upon the small torus. Pod (in our species) linear or oblong, stipitate, many-seeded : 

 style short or none. Seeds globose-reniform to ovate. — Our species are all erect 

 branching annuals; with palmately 3 - 7-foliolate leaves (leaflets entire), and yeUow 

 or purple flowers, in bracteate racemes ; pods pendent on spreading pedicels. 



About 70 species, inhabitants of hot and dry regions, chiefly of America and Africa. The fol- 

 lowing species approach the eastern or southern borders of the State. 



1. C. lutea, Hook. Smooth or slightly pubescent, 1 to 2 feet high : leaflets 5, 

 mear- to oblong-lanceolate, one or two inches long, acute, short-petiolulate, equal- 

 ling the petioles; stipules setaceous, caducous; bracts simple, bristle-tipped: flowers 



Showv. brio-lit. vollnw fnTirmlinoQ +K^ ,,r,^^. „1 „ i-_ 1 •_ p -, , / <^ . , ,. 



ines 



„ /. , , —i^-^^v... ....^.vv^^v/uo, v.ciu.u^.uuo, uiavis siiupie, orisiie-tippea : no^ 



showy, briglit yellow, corymbose, the raceme elongated in fruit : petals 3 to 4 1 

 long, much exceeding the ovate-lanceolate sepals : stamens much exserted : pod 6 to 

 15 lines long, about 2 lines broad, acute at each end : style less than a line lon^^ • 

 the stipe and pedicel each about half an inch long. — PI. i. 70 t 25 • Lindl Bot 

 Reg. xxvii. t. 67. C. aurea, Nutt. in Torr. & Gray, Fl. i. 122 ; Watson, 1. c.'32. * 

 to Cdorado* ''^ ^^^ ^''^^'^^^ of Northwestern Nevada, thence northward to the Columbia and east 



2. C. platycarpa, Torr. With the habit and characters of the last, but pubes- 

 cent and somewhat glandular : leaflets 3, broadly oblong to lanceolate, 6 to 8 lines 

 long, obtuse or acutish : sepals linear-setaceous : pod 9 lines long, about 4 lines 

 broad, 10-12-seeded : style 2 lines long. — Bot. Wilkes Exp. 235, t. 2. 



Klamath River, N. California (Pickering) ■ Blue Mountains, Oregon, Nevius. 



3. C. sparsifolia, Watson. Smooth, diffusely branched, a foot hioh • leaves 

 much scattered, simple or 3-foliolate ; leaflets 2 or 3 lines long, oblanceolate, acute ; 

 stipules fimbriate, caducous : flowers few, in a loose raceme : sepals ovate : petals 

 with a nectariferous scale at base, 3 lines long, exceeding the stamens : pods 9 lines 

 long, narrow, acutish, very shortly stipitate. — Bot. King Exp. 32, t. 5. 



In dry sand, near Ragtown, Carson Desert, Nevada, Watson. 



C. SoNOR^, Gray, PI. Wright, ii. 16, is a tall slender glabrous species, with trifoliolate almost 

 sessile leaves and Imear leaflets ; flowers small, in loose racemes; pods half an inch Ion"; style 

 very short. From Northwestern Sonora to S. Colorado, and may enter S. California. 



4. CLEOMELLA, DC. 



Characters nearly as in Cleome, but the few-seeded pod small and ovoid-globose 

 or rhomboidal, or with the valves often laterally produced. — Erect branching 

 annuals ; flowers yellow, racemose ; leaves 3-foliolate. 



A genus of half a dozen species, confined to the interior region of North America. 



