CRUCIFERAE 



337 



Silique terete; seeds in I row. 

 Silique flat; seeds in 2 rows. 

 Beak flat, sword-shaped. 

 Silique elliptic or oblong, very flat, 2-3 times as long as 

 broad, clearly stipitate; flowers violet. 

 II. Pod an orbicular, globose or oblong silicle, or but little 

 more than twice as long as wide. 

 Silicle globose, or flattened parallel with the septum. 

 Silicle not compressed. 



Silicle pear shaped, or obovoid, many-seeded. 

 Silicic globose or terete oblong. 

 Petals 2-cIeft. 

 Petals not 2-cleft. 

 Flowers yellow. 

 Flowers white. 



Terrestrial; tall; style very short. 

 Aquatic, with dissected leaves; 

 style slender. 

 Silicic compressed or flat. 

 Silicle many seeded. 

 Silicle 2-8 seeded. 

 Flowers yellow. 

 Flowers white. 

 Silicle flattened at right angles to the septum. 

 Seeds several in each cell of the silicle. 

 Silicle triangular, obcuneate. 

 Silicle oblong or orbicular, winged all around. 

 Seeds solitary in each cell, compressed. 

 B. Pod indehiscent, short or elongated. 

 Pod broader than long. 

 Pod globose, reticulated. 

 Pod elongated. 



Pod of 2 joints, separating at maturity; plants maritime. 

 Pod not jointed, but constricted between the seeds; 

 plants not maritime. 



Brassica. 



DlPLOTAXIS. 

 SlNAPIS. 



19. LUNARIA. 



2. 

 22. 



Camelina. 



Berteroa. 



Radicul \. 



Armoracia. 



Neobeckia. 



Draba. 



Alyssum. 



KONIGA. 



Bursa. 



Thlaspi. 



Lepidium. 



Carara. 

 Neslia. 



Cakile. 



Raphanus. 



1. Lepidium [Tourn.] L. 



Stem leaves clasping by an auriculate base. 

 Pods broadly ovate, winged. 

 Pods wingless, broader than long. 

 Stem leaves petioled or sessile, not clasping. 



Petals relatively conspicuous, almost always as long as the 



calyx. 

 Petals rudimentary or 0, scarcely as long as the calyx in rare 

 cases. 

 Pods ovate, 1.5 mm. long, 2 mm. broad, angled on the 



edges and with very small wings. 

 Pods orbicular, seldom broadly ovate, mostly 3 mm. long 

 and broad. 



23 



L. campestre. 

 L Draba. 



3. L. virgimcum. 



4. L. ruder ale. 



5. L. densiflorum. 



