POPULAR FLORA. 125 



1. Pod (silique) generally several times longer than tcide. 



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



Flowers pink or purple. Pod thick, fleshy when young, {Edphanus) *Eadish. 



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



{Raphanus^ § Raphanislrum) 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- ) (Brdssica) \ *Turnip and 



coming fleshy in cultivation, i ( *Cabbage. 



Calyx open or spreading in blossom, {Sinajns) 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, {MattJdola) *Stock. 



Stigmas close-pressed together. Seeds oblong, {Hisperis) *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, {^rabis) Rock-Cress. 



Valves of the pod without a nerve. 



Stem-leaves alternate or scattered, ( Carddmi7ie) Bitter-Cress. 



Stem-leaves 2 or 3, whorled or clustered. Root fleshy, (Dentaria) Tooth wort. 



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



Pods awl-shaped. Flowers pale yellow, (Sisgrnbriuni) Hedge-Mustard. 



Pods turgid, short-linear or oblong, {Nasturtium) Watek-Ckess. 



2. Pod {sllicle or pouch) shorty tlie length not more than two or three times the breadth. 



Pod opening when ripe by 2 valves which foil 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) Whitlows-Grass. 



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



Flowers purple, large. Pod large, stalked above the calyx, {Lunaria) *Hoxesty. 



Flowers white, small. Pod small, 2-seeded, (Kdniga) *Sweet-Alyssum. 



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, {Ib'eris) ^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, ( Cakile) Sea-Rocket. 



11. MIGNONETTE FAMILY. Order EESEDACEiE. 



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

 deserves notice merely because it contains the 



