GARDEN BOTANY. 



XXXI1J 



Order CKUCIFEKJE. Mustard Familt. 



Manual, p. 28. — "Well known by the pungent taste, flowers of 4 sepals, 4 

 petals with claws, 6 tetradynamous stamens, and the kind of pod called a silique 

 The following- is a simple key to the cultivated species. 



or silicle. 



Flowers deep orange or brownish yellow, sweet-scented. 

 Flowers pure yellow. 

 Pod long or longish, beak-pointed, several-seeded : seeds spherical. 

 Mostly biennials : sepals erect : upper leaves sessile or clasping. 

 Annuals : sepals loose or spreading : leaves cut. Man. p. 36. 



Pod slender, not beaked, several seeded : seeds flat. Man. p. 35. 

 Pod flat, wing-like, 1-celled, 1-seeded, hanging, not opening. 

 Pod very short, 2-celled, few-seeded : low plants. 

 Flowers pale yellow, turning white or purple : pod jointed. 

 Flowers not yellow, white, pink, or purple. 



Seeds spherical, several in a beak-pointed thick and indehiscent pod. 

 Seeds several or many in a long and narrow pod. 



Leaves green, toothed : flowers fragrant chiefly at night. . 

 Leaves hoary, entire : flowers fragrant in the day. . 

 Seeds many or few in a shortish pod : flowers white. Man. p 30 

 Seeds several in a broad and flat pod, having a broad and silvery 



partition : flowers purple, large 



Seeds one or sometimes two in each cell of a short pod. 

 Corolla irregular: 2 exterior petals larger than the other two. 

 Corolla regular, as in all the rest of the order, white, small. 

 Leaves cut or toothed : partition of the pod very narrow. 

 Leaves narrow, entire : partition oval. 



1. CHEIRANTHUS. 



2. BRASSICA. 

 SINAPIS. 

 BARBAREA. 



3. ISATIS. 

 10. ALYSSUM. 



4. KAPIIANTJS. 



4 RAPHANUS. 



5. IIESPERIS. 



6. MATTHIOLA. 

 NASTURTIUM 



7. LUNARIA. 



8. IBERIS. 



9. LEPIDIUM. 

 10. ALYSSUM. 



1. Cheiranthus Cheiri, Wallflower. Perennial, with narrow and 

 entire pointed leaves : cultivated everywhere for its deliriously fragrant orange 

 or red-yellow flowers. 



2. Brassica. So much like Sinapis hotanically, that the two should form 

 only one genus. Cult, as biennials for food. 



B. oleraeea, Cabbage, with roundish, thickish, strongly-veined, gla- 

 brous and glaucous fli shy leaves, in cultivation forming a head the first year. 



Var. Broccoli has fleshy irregular branches bearing clusters of abortive 

 flower-buds, instead of a bead. 



Var. Cauliflower has a depressed head, formed of short and fleshy flower- 

 branches changed into a dense fleshy mass. 



Var. Kohlrabi has the main stein thickened below into a sort of turnip 

 above-ground. 



Var. Kale is more nearly the natural wild state, leaves not forming a head. 



B. campestris, with lower leaves rough-hairy and pinnatifid, upper ones 

 clasping by an auricled base, and flowers brighter yellow, is the original of the 



Var. Turn-ip, with depressed fleshy (napiform) white root, and (probably) 



Var. Rutabaga or Swedish Turnip, with a longer yellowish root. 



Var. Colza, or Rape-Seed, is near the wild state, with the small root 

 annual; cult, for the oil of the seeds. 



3. Isatis tinctoria, Dyer's Woad. Tall biennial, with branching racemes 

 of small yellow flowers, succeeded by hanging 1-seeded pods, not opening, 

 winged, like a small samara : formerly cultivated for a blue dye 



