168 Cruciferae 



terete, spreading or divaricate, longer than the capsule ; stamens 

 2-4 ; capsule orbicular retuse, glabrous. 



Common in the valleys and mountains throughout our range. 



*- *- Pedicels flattened. 



2. Ii. lasiocarpum Nutt. Low, branching from or near the 

 base, decumbent or ascending, hirsute with spreading hairs or 

 somewhat tomentulose; lower leaves pinnately parted, segments 

 usually rather broad, obtuse or rounded, sparingly toothed or 

 entire; racemes several ; pedicels distinctly flattened, horizontally 

 spreading, 3 mm. long; capsule suborbieular, thin-margined near 

 the apex, hispid pubescent upon both faces or at least upon the 

 margins. 



Sand-dunes along the seashore. 



3. L. nitidum Nutt. Erect or usually branched from the base 

 and spreading, 1-3 dm. high, glabrate or somewhat pubescent; 

 lower leaves deeply pinnatifid with narrow rachis and alternate 

 segments; the upper leaves often entire; racemes 1-several, 

 loosely flowered ; petals considerably exceeding the sepals ; pedi- 

 cels strongly flattened, spreading; capsule smooth, shining, often 

 purplish, 4-5 mm. long. 



Very common on grassy plains and hills. February-March. 



** Apex of capsule produced into 2 distinct teeth or lobes. 



4. L. acutidens (Gray) Howell. Branching from the base, 

 decumbent or ascending, 10-20 cm. long, pubescent throughout 

 with short spreading hairs; leaves linear tapering at both ends, 

 entire or faintly and remotely denticulate, 2-5 cm. long, about 

 2mm. wide; branches flowering about % their length; racemes 

 rather loose; pedicels strongly flattened, appressed to the stem to 

 near the middle, then curving outward; pod strongly reticulated, 

 sparsely pubescent, 4 mm. long including the acute teeth, about 

 3 mm. broad; sinus about 1 mm. deep and 2 mm. broad at tip. 

 (L. dictyotum acutidens Gray.) 



In saline places toward the coast. Cienega; Santa Monica. 



6. EBYSIMUM L. HEDGE-MUSTARD. 



Erect annual, somewhat hirsute at least below with 

 simple hairs. Leaves pinnatifid. Inflorescence spici- 



