16 COMMON CANADIAN WILD FLAMS. 



late, sagittate. Pods pear-shaped, large, margined. -In flax- 

 fields. 



11. CAPSEI/LA, Vent. SHEPHERD'S PURSE. 



C. Bursa-pasto'ris, Momch. Flowers small, white. Root- 

 leaves clustered, pinnatifid; stem-leaves clasping, sagittate. A 

 very common weed. 



13. TIILASPI, Tourn. PENNYCRESS. 



T. arvense, L. (FIELD PENNYCRESS.) A low smooth plant, 

 with undivided radical leaves, and stem-leaves sagittate and 

 clasping. Pods half an inch broad, deeply notched at the top. 

 Waste places. 



13. LEPID'IUM, L. PEPPERGRASS. 



1. L. Virgin'icum, L. (WILD P.) Flowers small ; petals 

 present, white. Stem 1-2 feet high. Leaves lanceolate, the 

 upper linear or lanceolate and entire, the lower toothed or pin- 

 natifid, tapering towards the base. Pods marginless or nearly 

 so, oval or orbicular. Along railways and roadsides. 



2. L. interme'dium, Gray. Distinguished from No. 1 by 

 having the cotyledons incumbent instead of accumbent, and the 

 pods minutely winged at the top. Dry sandy fields. 



3. L. ruderale, L. Petals always absent. More branched 

 than the preceding. 



4. L. campestre, L. Well distinguished from other species 

 by its sagittate, clasping leaves. Pods ovate, winged. Rather 

 rare. 



14. CAKI'LE, Tourn. SEA-ROCKET. 



C. America'na, Nutt. (AMERICAN S.) Flowers purplish. 

 Leaves obovate, lleshy, wavy-toothed. Pod fleshy, 2-jointed. 

 Seashore, and borders of the Great Lakes. 



ORDER XI. CAPPARLDA'CEJE. CAPER FAMILY. 



Herbs (in Canada), with an acrid watery juice, and alternate 

 palmately-compound leaves. Flowers cruciform. Stamens 8 or 

 more. Pod like that of a crucifer, but only 1 -celled. 



