POPULAR FLORA. 
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1. Pod ( silique ) generally several times longer than wide. 
Pod not splitting open when ripe, but becoming hard, beak-pointed. Seeds round. 
Flowers pink or purple. Pod thick, fleshy when young, ( Rdphanus ) ^Radish. 
Flowers yellow, turning whitish or purplish. Pod long, necklace-shaped, 
( Raphanus , § Raphanistrum) Jointed-Charlock. 
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- ) ( Brassica ) { ^Turnip and 
coming fleshy in cultivation, ) I ^Cabbage. 
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 ) ^Wallflower. 
Flowers rose, purple, or white. Pods not flat. 
Stigmas thickened on the back. Seeds flat, ( Matthiola ) * 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, ( Arahis ) Rock-Cress. 
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 ) Tooth wort. 
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 or pouch) 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. 
( Armordcia ) Horseradish. 
( Camelina) False-Flax. 
(Dr aba) Whitlow-Grass. 
( Lunaria ) * Honesty. 
(Koniga) *Sweet-Alyssum. 
Pod globose or ovoid, many-seeded, 
Pod pear-shaped, rather flattish, many-seeded. Flowers yellow, 
Pod flat, with a broad partition. Seeds many, 
Pod flat, with a broad partition. Seeds 2 to 4. 
Flowers purple, large. Pod large, stalked above the calyx, 
Flowers white, small. Pod small, 2-seeded, 
Pod flattened contrary to the narrow partition. Flowers white or purple. 
Seeds many; pod triangular-obcordate with a shallow notch, ( Capsella) Shepherd’s-Purse. 
Seeds only one in each cell. 
Petals all alike. Flowers very small, ( Lepidium ) Peppergrass. 
Petals unlike; the two on the outer side of the flower larger, ( Iberis ) ^Candytuft. 
Pod not opening, 1-celled, 1-seeded, wing-like. Flowers yellow, ( Isatis ) *Woad. 
Pod not opening, but jointed across the middle, fleshy. Flowers purplish, ( CaJctle) Sea x Rocket* 
11. MIGNONETTE FAMILY. Order RESEDACEiE. 
A family consisting of a few European herbs, with small and irregular flowers, which 
deserves notice merely because it contains the 
