BRASSICACEAE. 77 



Sepals 2, or very rarply 3 or 4 : endosperm present. Fam. 1. Papaveraceae. 

 Sepals 4-S : endosperm wanting. 



Capsules 2-ceIled : stamens G, tetradynamous. Fam. 2. Brassicaceae. 



Capsules 1-celled : stamens when C not tetradynamous. Fam. 'S. Capparidaceae. 



Family 1. PAPAVERACEAE. Poppy FAiiiLY. 



Herbs or rarely woody plants, the sa]) colored. Leaves alternate or 

 opposite: blades entire, toothed, or divided. Flowers perfect, regular. 

 Calyx of 2, or rarely 3, caducous sepals. Corolla of 4, 8 or 12, or rarely 

 more, deciduous petals. Androecium usually of many distinct stamens. 

 Gynoeeium 2-several-carpellaiy. Fruit a capsule. 



1. ABGEMONE L. Herbs. Leaf-blades incised-piunatifid. Flower-buds 

 erect. Sepals 2 or 3, hooded or horned. Petals 4 or 6, broad. Gynoeeium 

 4-6-earpellary, the ovary with 4-6 nerviforni placentae. Stigma 4-lobed. 

 Capsule elongate. 



1. A. mexicana L. Plants glaucous, 3-9 dm. tall: leaves 10-2.5 cm. long; 

 blades runcinate-pinnatifid, blotched, spiny-toothed and commonly spiny along 

 the midrib, sessile and clasping: sepals acuminate and bristle-tipped: corolla 

 yellow, 2.5-7 cm. broad: capsules oblong, 2.5-3 cm. long, spine-armed. — 

 Waste and cultivated grounds. Nat. of Mex. — F. K, (Ber., Bah., Cuba, 

 Ant.) — Prickly-poppy. 



Family 2. BRASSICACEAE. Mustard Family. 



Herbs or partially woody plants, the sap watery. Leaves alternate: 

 blades entire, toothed, or dissected. Flowers perfect, in spikes or racemes. 

 Calyx of 4 mostly erect or appressed sepals. Corolla of 4, usually clawed, 

 petals, or wanting. Androecium of 6, or rarely 2 or 4, diclynamous 

 stamens. Gynoeeium of 2 united carpels. Stigma depressed or 2-lobed. 

 Fruit capsular, elongate (silique) or short (silicle), flat, terete or angled. 



Pods not stipitate. 



Pods flattened contrary to the narrow partition, winged or margined. 



1. Lepidium. 

 Pods not flattened contrary to the partition : neither winged or 

 margined. 

 Pods dehiscent lengthwise. 2. Sinai-is. 



Pods separating into joints, with transverse partitions. 3. Cakile. 



Pods stipitate. 4. Warea. 



1. LEPIDIUM [Tourn.] L. Herbs. Leaf-blades entire to pinnatifid. 

 Racemes terminal. Sepals 4, spreading. Petals 4, longer than the sepals, or 

 wanting. Stamens usually fewer than 6. Ovule, and seed, 1 in each carpel. 

 Pods suborbieular to oblong. 



1. L. virginicum L. Stems 2-9 dm. tall: blades of the cauline leaves narrow, 

 sharply toothed or incised: pedicels spreading, 3-4 mm. long at maturity: 

 sepals oblong, about 1 mm. long: petals slightly longer than the sepals: pods 

 3-4 mm. wide. — Pinelands and cultivated grounds. — P. K. {Ber., Bah., Cuba, 

 Ant.) — Peppergrass. 



2. SINAPIS [Tourn.] L. Herbs. Leaf-blades lobed or pinnatifid. 

 Sepals 4, herbaceous. Petals 4, mostly yellow, the blades broad. Stamens 6: 

 anthers narrowly oblong. Style columnar: stigma depressed. Pod elongate, 

 the beak sword-like. Seeds thick, marginless. 



