POPULAR FLORA. 125 



1. Pod {siUquc) generally several times longer tlian icide. 

 Pod not splitting open when ripe, but becoming hard, beak-pointed. Seeds round. 



Flowers pink or purple. Pod thick, fleshy when young, {Rdplianus) *Radish. 



Flowers yellow, turning whitish or purplish. Pod long, necklace-shaped, 



(Raphunus, § Raphanislrum) Jointed-Charlocic. 

 Pod splitting, i. e. opening when ripe by two valves, which fall off and leave the partition. 

 Pod ending in a beak. Seeds round. Flowers yellow. 



Calyx erect in blossom. Roots, stems, or leaves, &c. be- ) , -d ■ • s { *Turnip and 



.„,.,.. f iorassica) { 



commg fleshy m cultivation, ) ( *Cabuage. 



Calyx open or spreading in blossom, (Sinapis) Mustard. 



Pod not beaked, i. e. not ending in a strong-pointed tip. Seeds flat or oblong. 



Calyx unequal, two of the sepals projecting or pouch-shaped at the base. 



Flowers yellow or orange. Pod and seeds flat, { Cheirdnthus) *Wallfloaver. 



Flowers rose, purple, or white. Pods not flat. 



Stigmas thickened on the back. Seeds flat, (Matth'wla) *Stock. 



Stigmas close-pressed together. Seeds oblong, (Hesperis) *Rocket. 



Calyx equal, i. e. the sepals all alike or nearly so. 



Pods flat. Flowers white or purple. 



Valves of the pod with a mid-nerve or vein, (Jlrabis) Rock-Ceess. 



Valves of the pod without a nerve. 



Stem-leaves alternate or scattered, (Carddmine) Bitter-Cress. 



Stem-leaves 2 or 3, whorled or clustered. Root fleshy, [Dentaria) Toothwort. 



Pods obtusely 4-sided, linear. Flowers yellow, (Barbarea) Winter-Cress. 



Pods awl-shaped. Flowers pale yellow, {Sisymbrium) Hedge-Mustard. 



Pods turgid, short-linear or oblong, {Nasturtium) Water-Cress. 



2. Pod {silicle orjMuch) short, the length not more than two or three times the breadth. 

 Pod opening when ripe by 2 valves which fall off and leave the partition. 



Pod globose or ovoid, many-seeded, {Armordcia) Horseradish. 



Pod pear-shaped, rather flattish, many-seeded. Flowers yellow, {Camelma) False-Flax. 



Pod flat, with a broad partition. Seeds many, {Draba) Whitlow-Grass. 



Pod flat, with a broad partition. Seeds 2 to 4. 



Flowers purple, large. Pod large, stalked .^bove the calyx, {Lundria) *Honesty. 



Flowers white, small. Pod small, 2-seeded, {Koniga) *Sweet-Alyssum. 



Pod flattened contrary to the narrow partition. Flowers white or purple. 



Seeds many; pod triangular-obcordate with a shallow notch, ( CapsMa) Shepherd' s-Purse. 

 Seeds only one in each cell. 



Petals all alike. Flowers very small, {Lepidium) Peppeegrass. 



Petals unlike; the two on the outer side of the flower larger, {Ibi'ris) *CANDyTUFT. 



Pod not opening, 1-celled, 1-seeded, wing-like. Flowers yellow, {Isdtis) *Woad. 



Pod not opening, but jointed across the middle, fleshy. Flowers purplish, ( CakUe) Sea-Rocket. 



11. MIGNONETTE FAMILY. Order EESEDACE^. 



A family consisting of a few European herbs, with small and irregular flowers, which 

 deserves notice merely because it contains the 



