168 CRUCIFERAE. 



Pods compressed at right angles to 

 the partition. 

 Nerves of the valves acute, 

 forming keels or wings. 

 Silicles orbicular or ob- 



ovate; cells 1-2-seeded. 236. Lepidium, 179. 

 Silicles ovate or oblong; 



cells 2-several-seeded. 237. Thlaspi, 180. 

 Nerves of the valves obtuse, 

 not prominent. 

 Silicles cuneate, notched at 



the apex. 238. Bursa, 181. 



Silicles not cuneate, not 

 notched at the apex. 

 Cauline leaves sessile ; 



pod elliptic. 239. Hutchinsia, 181. 



Cauline leaves auricu- 



late; pod obovoid. 240. Camelina, 181. 



215. CAK1LE. 



Seaside annuals with fleshy stems; flowers purplish; pods 

 short, 2-jointed, fleshy, the upper joint separating at maturity, 

 each joint indehiscent, 1-celled and 1-seeded or the lower joint 

 seedless. 



Cakile edentula (Bigel.) Hook. Stems fleshy, leaves obovate, crenately 

 or sinuately toothed; joints of the pod nearly equal in length, the upper ovoid, 

 4-angled at base, narrowed into a flattened beak. 



Very rare along the seacoast. Long Beach near Ucluelet, Vancouver 

 Island, British Columbia, Macoun; Port Angeles, Washington, Flett. 



216. RAPHANUS. 



Erect branching annual or biennial herbs with showy flowers; 

 style long and slender; pod linear or oblong-cylindric, tapering 

 upward, indehiscent, several-seeded, with a spongy pith between 

 the seeds but no true partitions; seeds spherical. 



Petals reddish, rarely white; pod not grooved. R. sativus. 



Petals yellowish, purple- veined ; pod longitudinally grooved. R. raphanistrum. 



Raphanus sativus L. Radish. Stems branched, 30-150 cm. high, glab- 

 rous or nearly so; basal leaves lyrate-pinnatifid, rough-hairy; petals purple; 

 pods 10-12 mm. thick, cylindric, tapering into a long pointed beak; seeds 

 usually 2 or 3. 



Persisting in cultivated ground. 



Raphanus raphanistrum L. Wild Radish. Stems 30-90 cm. high, loosely 

 branched, hispid below, glabrous above; basal leaves lyrate-pinnatifid; petals 

 yellow, strongly veined, turning white or purplish in age; pods 2-A mm. thick, 

 moniliform, the beak slender; seeds 3-8. 



A weed in fields and waste places. 



217. CORONOPUS. 



Annual or biennial diffused herbs with pinnatifid leaves; 

 flowers small, whitish; pods flattened at right angles to the 



