POPULAR FLORA. 125 



1. Pod {silique) generally several times longer than wide. 

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



Flowers pink or purple. Pod thick, fleshy when young, (Rdphanus) *Eadish. 



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



{RapkaniiSj § Rapkanistrum) 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- j (Brdssica^ ! *Tuknip and 



coming fleshy in cultivation, i i *Cabijagib. 



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



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-sliaped at the base. 



Flowers yellow or orange. Pod and seeds flat, (Cheirdnikus) *Wallfloweb. 



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



Stigmas thickened on the back. Seeds flat, (Matthiola) *Stock. 



Stigmas close-pressed together. Seeds oblong, {Hesperis) *Eocket. 



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, {Arabis) Rock-Ckess. 



Valves of the pod without a nerve. 



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



Stem-leaves 2 or 3, whorled or clustered. Root fleshy, (Denlaria) Tootiiwoet. 



Pods obtusely 4-sided, linear. Flowers yellow, (Barbarea) Wi.ntek-Ceess. 



Pods awl-shaped. Flowers pale yellow, (Sisymbrium) Hedge-Mustaed. 



Pods turgid, short-linear or oblong, {Nasturtium) Watik-Cebss. 



2. Pod (silicle or pouch) shorty 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, {Arriuyrdda) Hoeseeadish. 



Pod pear-shaped, rather flattish, many-seeded. Flowers yellow, ( Camelina) False-Fl-vx. 



Pod flat, with a broad partition. Seeds many, • (Draba) Whitlow-Geass. 



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



Flowers purple, large. Pod large, stalked above 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, ( Capsella) SHEPHEED's-PtJESE. 

 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, (Ib'eris) *Candytuft. 



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



Pod not opening, but jointed across the middle, fleshy. Flowers purphsh, ( Calale) Sea-Rockeb 



11. MIGNONETTE FAMILY. Order EESEDACEJE. 

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

 deserves notice merely because it contains the 



