CBUCIFERiE 



:;n 



aa. Fruit a silicle (short and broad). 



b. Partition in the pod parallel to the sides 'A. Alyssum 



bb. Partition crosswise the pod. 



c. Pod obcordate, many seeded 1. Capsella 



cc. Pod orbicular, 2-seeded 5. Lepidium 



1. BRASSICA. Mi STABD. 



Erect branchy herbs, mostly annual, with more or less lyrate lower 

 leaves, and small yellow flowers in racemes or panicles: petals clawed or 

 narrowed in-low. the limbs spreading horizontally: siliqne narrow, 

 cylindrical or l-antded, the valves 1-5-nerved and the seeds in 1 

 row in each locule. Cabbage, cauliflower, and turnip also belong to 

 this genus. The three followingare common weeds introduced from 

 Europe. 



B. nigra, Koch. Black mustard. Fig. 159. Leaves pinnatifld, 

 somewhat hairy: pod short, strongly 1-angled, not hairy. Mustard 

 (flour) come-, largely from this species. 



B. alba, Boiss. WhiU mustard. Leaves pinnatifld and rough- 

 hairy : pods rather slender, hairy, in it only the lower part seed-bearing, 



B. Sinapistrum, Boiss. Charlock, Leaves strongly toothed : pod 

 knotty, hairy or smooth, tin- upper third indehisceni and 2 edged. 



2. BARBAREA. Wind a CRESS. 



Low herbs, blooming in early spring, with many -mall light 

 yellow flowers, and lyrate have- with the terminal division much tie 

 largest: pod cylindrical or somewhat l-angled, the valves having nigra, 

 a strong mid vein : seeds in a single row. 



B. vulgaris, R. Br. < 'n,i,i-,,t winter en Fellow rocket. Biennial, 



about 1 ft. high, with smooth foliage and flowers in elongating clusters: 

 lower leaves lyrate, upper ones cm or merely toothed. Low grounds. 



3. alVssum. Alyssum. 



Small plants, mostly trailing, With entire ami -mall 



leaves: pod -mall, orbicular, one or two seeds in each 

 -> ''t~X^ locule: dowers iii elongating racemi 



A. marltimum, Linn. Sweet alu the irardena 



.\ J^ (from Europi Pig 160. Annual, producing a profusion 



\- /^ mall white, fragrant ilo 



\ ^LtD 4. CAPSELLA. Shepherd's Pi 



> ? Low -hoit lived annual-, with very -mall white flow 



( ' in racemes: pod ol rdate or Inverselj triangular, the 



partition runnln diameter, containing 



-e\ i ral ' L'UH. 



"'" Al >"" 1 " c. Bursa-pastoris. Mcench. 



iiiaiiliiiiiuii. , , . ... 



I,u, ii in,- ol the c.immoiii -t littl. 



root leaves pinnatifld or strong toothed, h rrow 



Bhaped. Europi 



