CAPPARIDACE.E. (CAPEB FAMILY.) 31 



with the radical leaves clustered and pinnatifid ; those of the stem clasping 

 and often entire. Racemes elongated. Silicle shorter than the spreading 

 pedicel. Flowers white. 



1. C. Bursa-pastoris, Moench. — Waste ground. March- April. 

 Introduced. 



20. CAKILE, Tourn. Sea Mustard. 



Loment 2-jointed, tlie joints thick, 1-celled, 1-seeded. Seed of the upper 

 joint erect, of the lower suspended. Cotyledons accumbent. — Fleshy seaside 

 annuals, with pinnatifid or lobed leaves, and racemose white or purple flowers. 



1. C. maritima, Scop., var. aequalis, Chapm. Glabrous; stem much 

 branched, l°-2° high; leaves oblong-obovate, toothed or pinnatifid, petioled; 

 petals wedge-shaped, pale purple; loment (dry) sulcate, 6"-8" long, short- 

 stalked, the upper joint beaked, larger than the lower one. — Drifting sands 

 along the coast. May - Sept. 



Order 12. CAPPARIDACE^E. (Caper Family.) 



Herbs, shrubs, or trees, with acrid watery juice, alternate, simple or 

 palmately compound leaves, and regular hypogynous flowers. Stipules 

 spiny or wanting. — Sepals 4, imbricated or valvate in the bud. Petals 

 4, mostly clawed. Stamens 6 or numerous. Ovary 1-celled : ovules 

 amphitropous or campylotropous, attached to the two parietal placentae. 

 Fruit silique-like, and 2-valved or indehiscent. Seeds reiiiform, with- 

 out albumen. Embryo curved. 



Synopsis. 



# Calyx 4-Eeptalous. — Herbs. 



1. POLANISIA. Stamens 8 - 32, free. Torus short. Style filiform. 



2. CLEOME. Stamens 6, free. Torus short. Stigma sessile. 



3. GYNANDROPSIS. Stamens 6. Filaments partly united with the stipe of the ovary. 



* * Calyx 4-parted. — Shrubs. 



4. CAPPARIS. Stamens numerous, free. Leaves entire. 



1. POLANISIA, Eaf. 



Petals clawed. Stamens 8 - 32 : filaments free, unequal, filiform. Recep- 

 tacle short, bearing a truncated or emarginate gland on the upper side. Ovary 

 sessile or short-stipitate. Style filiform. Capsule silique like, many-seeded. 

 — Annual clammy herbs, with palmately trifoliolate petioled leaves, and race- 

 mose flowers. 



1. P. tenuifolia, Torr. & Gray. Stem slender, erect, branching; leaf- 

 lets filiform, longer than the petiole ; petals oval, entire, short clawed, unequal ; 

 stamens 12- 1.5; capsule linear, smooth, short-stipitate, pointed with the per- 

 sistent .style; seeds minute, circular. — Georgia (Le Conte) and South Florida 

 (Blodgett). — Stem 1° - 2° high. Flowers white. 



2. P. graveolens, Raf. Glandular-pubescent, branching, 6'-18'liigh; 

 leaflets oblong or lanceolate ; petals cuneate, notched, 4" long, yellowish 



