CAPER FAMILY 371 



minal racemes. Receptacle inconspicuous, with a solid gland on the upper side. 

 Sepals 4, imbricate, deciduous. Petals 4, imbricate, entire or notched at the 

 apex, with slender claws. Stamens 12-32; filaments purple, more or less de- 

 clined; anthers introrse. Capsule elongate, flattened, sessile, 2-valved at the 

 apex. Seeds numerous. [Polanisia Raf.] 



1. J. trachysperma (T. & G.) Greene. Stem 3-8 dm. high, usually branched; 

 leaflets 3, oblanceolate, elliptic or oval, 2-5 cm. long; petals long-clawed, 8-12 

 mm. long; stamens about 16; filaments purple; pods sessile, linear, 4-5 cm. long, 

 6-7 mm. wide. P. trachysperma T. & G. Sandy soil and canons: Sask. la. 

 Tex. Ariz. B.C. Plain Submont. JeAu. 



3. PERITOMA DC. BEE FLOWER, INDIAN PINK, STINK FLOWER. 

 Tall glabrous or pubescent annuals. Leaves palmately trifoliolate, petioled, 

 alternate. Flowers perfect, in terminal racemes, nearly regular. Sepals 4, 

 united below, valvate; calyx deciduous by circumscission at base. Receptacle 

 with a solid appendage opposite the upper sepal. Petals 4, nearly equal, con- 

 volute, scarcely clawed. Stamens 6; filaments filiform, unequal, more or less 

 declined; anthers spirally coiled. Capsule elongate, stalked, 1-celled, 2-valved. 

 Seeds numerous, pendulous, conduplicate. [Cleome L., in part.] 



Petals yellow. 1. P. luteum. 



Petals purple, pink, or white. 



Petals 8-12 mm. long, usually 3-toothed. 

 Stamens exserted. 



Pods 2.5-5 cm. long, broadly linear ; calyx-lobes lanceolate to ovate, longer than 



broad. . 2. P. serrulatum. 



Pods 67 cm. long, narrowly linear; calyx-lobes broadly triangular, abruptly 



acuminate, broader than long. 3. P. angustum. 



Stamens included. 4. P. inornatum. 



Petals about 4 mm. long, entire. 5. P. Sonorae, 



1. P. luteum (Hook.) Raf. Stem 3-6 dm. high; leaflets 3-7, linear-ob- 

 lanceolate to oblong, entire, 3-5 cm. long; petals yellow, oblanceolate, 6-8 mm. 

 long; pedicels about 1 cm. long, spreading; stipe 1-2 cm. long; body of the pod 

 1-5 cm. long. Cleome lutea Hook. River bottoms and and banks: Neb. 

 N.M. Ariz. Ore. Wash. Plain Submont. My-Au. 



2. P. serrulatum (Pursh) DC. Stem 6-15 dm. high; leaves 3-foliolate; 

 leaflets lanceolate to obovate-oblong, entire or rarely denticulate, 3-10 cm. long, 

 minutely pubescent or glabrous; petals fully 1 cm. long, purplish, rose-colored, 

 or white; stipe of the pod 1.5-2 cm. long; body 2.5-5 cm. long, 4-6 mm. thick. 

 Cleome serrulata Pursh. C. integrifolia T. & G. Prairies, sand-draws, and 

 waste places: Sask. Kans. N.M. Ariz. Ore. Plain Mont. My-Au. 



3. P. angustum (M. E. Jones) Rydb. Stem 5-10 dm. high; leaflets 3, 

 lanceolate, entire, 5-10 cm. long, glabrous; petals 8-10 mm. long, rose-colored or 

 white; stipe of the fruit 1.5-2 cm. long; body 6-7 cm. long, about 4 mm. thick, 

 tapering gradually at each end. Cleome integrifolia angusta M. E. Jones. 

 Valleys: Utah Ariz. N.M. Son. Je-Jl. 



4. P. inornatum Greene. Stem 3-6 dm. high, branched; leaflets 3, broadly 

 lanceolate, acute, entire, 2-3 cm. long, glabrous above, sparingly pubescent 

 beneath; calyx-teeth broadly triangular, cuspidate; petals 7-8 mm. long, white 

 or faintly purplish. Dry valleys: Colo. Submont. Au. 



6. P. Sonorae (A. Gray) Rydb. Stem 3-6 dm. high, often simple, glabrous; 

 leaflets 3, linear, 1-2 cm. long, glabrous; petals white or purplish; stamens of 

 about the same length; stipe somewhat reflexed, 6-8 mm. long; body of the pod 

 10-15 mm. long, 2.5 mm. thick, acute at both ends. Dry plains and saline soil: 

 N.M. Colo. Sonora. Son. Jl. 



4. CELOME Greene. 



Hirsute annuals. Leaves petioled, digitately trifoliolate, alternate. Flow- 

 ers regular, perfect, in bracted terminal racemes. Receptacle glandless. Sepals 

 4, distinct, deciduous, linear. Petals 4, spatulate, not clawed. Stamens 6; 

 filaments filiform, distinct; anthers spirally coiled. Pod long-stipitate, broad, 

 flat, with the seeds distinctly in two rows. 



