CAPER FAMILY. 



Genus i. 



I Cleome serrulata Pursh. Pink Cleome. 

 Fig 21 13. 



Cleome serrulata Pursh, Fl. Am. Sept. 441 1814. 

 Peritoma serrulatuin DC. Prodr i: 237 1824. 

 Cleome tntegrifolia T. & G. Fl. N. A. i : 122. 1S38. 



Annual, erect, glabrous, 2-3 high, branching 

 above. Leaves 3-foliolate, the lower long and 

 slender-petioled, the upper sessile or nearly so ; 

 leaflets lanceolate or oblong, acute, entire or 

 distantly serrulate, I's' long; fruiting racemes 

 greatly elongated ; bracts lanceolate or linear, 

 often mucronate; pedicels slender, spreading or 

 recurved and 6"-io" long in fruit ; stipe of the 

 pod about equalling the pedicel; flowers pink or 

 white, very showy; petals oblong, slightly clawed, 

 5"-6" long, obtuse; pods linear, acute, 1-2' long. 



Prairies, northern Illinois to Minnesota, Sas- 

 katchewan, Assiniboia, Missouri, New Me.^cico and 

 Arizona. Occasional in waste grounds farther east. 

 Rocky Mountain bee-plant. July-Sept. 



3. Cleome Ivitea Hook. Yellow 

 Cleome. Fig. 2115. 



Cleome lutea Hook. Fl. Bor. Am. i : 70. 

 pi. 25. 1830. 



Annual, erect, glabrous, branching, 

 l*-32 high. Leaves 5-foliolate, slen- 

 der-petioled, or the upper 3-foliolate and 

 nearly sessile ; leaflets oblong or oblong- 

 lanceolate, entire, short-stalked or sessile, 

 narrowed at the base, obtuse or acute 

 and mucronulate at the apex, -2' long; 

 racemes elongating in fruit ; bracts 

 linear-oblong, mucronate ; pedicels slen- 

 der, 5"-6" long; flowers densely race- 

 mose, yellow ; petals obovate or oblonceo- 

 late, about i" long; pod linear, \l'-z' 

 long, acute, borne on a stipe becoming 

 longer than the pedicel. 



In dry soil. Nebraska to Washington and 

 .\rizona. June-Sept. 



2. Cleome spinosa L. Spider-flower. 

 Fig. 21 14. 



Cleome spinosa L. Sp. PI. Ed. 2, 939. 1763- 

 Cleome fungens Willd. Enum. PI. 6S9. 1809. 



Annual, erect, 2-4 high, branching 

 above, clammy-pubescent. Leaves 5-7- 

 foliolate, the lower long-petioled, 5'-8' in 

 diameter, the upper shorter-petioled or 

 nearly sessile, passing into the simple 

 lanceolate or cordate-ovate bracts of the 

 raceme; petioles spiny at the base; leaflets 

 lanceolate or oblong-lanceolate, acute, mi- 

 nutely serrulate ; flowers numerous, long- 

 pedicelled, showy, purple or whitish, i' 

 broad or more; petals obovate, long- 

 clawed; stipe of the linear glabrous pod at 

 length 2-6' long; stamens variable in 

 length, often long-exserted. 



In waste places, southern New York to 

 Florida, west to Illinois. Arkansas and Louisi- 

 ana. Sometimes cultivated for ornament. 

 Fugitive or adventive from tropical America. 

 Prickly cleome. Summer. 



