CAPER FAMILY 371 



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

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

 apeXj 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.] 



!• 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 — SubmonL Je-Au. 



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 oi:)posite 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. [Ckome L., in part.] 



Petals yellow. 1. P. luteum. 

 Petals purple, pink, or white. 



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

 Stamens exsertcd. 



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



broad. 2. P. serrulatum. 



Pods 6-7 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-foholate; 

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

 nimutely 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 graduallv at each end. Cleome integrifolia angusta M. E, Jones. 

 VaUeys: Utah— Anz.— 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. lung, 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.-^onora. 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, Unear. Petals 4, spatulate, not clawed. Stamens 6; 

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

 nat, with the seeds distinctly in two rows. 



