24 COMMON CANADIAN WILD PLANTS. 



14. CAMEL'INA, Crantz. FALSE FLAX. 



C. sati'va, Crantz. (COMMON F. FLAX.) Flowers yellow- 

 ish. Stem 1-2 feet high, straight, erect, branching. Leaves 

 lanceolate, sagittate. Pods pear-shaped, large, margined ; 

 style slender. In flax fields. 



15. NESLIA, L. BALL MUSTARD. 



N. panieula'ta, Desv. Flowers yellow, in small pan- 

 icles. A troublesome weed in Manitoba. 



16. CAPSEL'LA, Vent. SHEPHERD'S PURSE. 

 C. Bursa-pastO'ris, Moench. Flowers small, white. Eoot- 

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

 A very common weed. 



17. THLASPI, Tourn. PENNYCRESS. 



T. arvense, L. (FIELD PENNYCRESS. FRENCH WEED.) 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 : common N.W. 



18. LEPID'HJDI, L. PEPPERGRASS. 



1. L. Virgin'ieum, 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 

 pinnatifid, tapering towards the base. Pods marginless or 

 nearly so, oval oi>orbicular. Eailways and roadsides. 



2. L. interfile dium, Gray. Distinguished from No. 1 by 

 having the cotyledons incumbent instead of accumbent, arid 

 the pods minutely winged at the top. Dry sandy fields. 



9. L. rudera'le, L. Petals always absent. More branched 

 than the preceding. 



4. L. eampestre, L. Well distinguished from other spe- 

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

 Bather rare. 



5. L. sati'vum, L.. has leaves variously divided and cut, 

 with numerous roundish winged pods, and flowers white or 

 rose-coloured. Escaped from cultivation in some places. 



6. L. Draba, L. An obscurely hoary perennial. Upper 

 leaves auricled, lower sessile, oblong. Pods heart-shaped, 

 the style conspicuous. Abundant about Clifton, Ont. 



