24 COMMON CANADIAN WILD PLANTS. 



14. C4MEL'1»1A, 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. KESLIA, L, Ball Mustard. 

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

 icles. — A troublesome weed in Manitoba. 



16. CAFSEL'IiA, Vent. Shepbekd's Puese. 

 C. Bursa-pasto'ris, Mcench. Flowers small, white. Eoot- 

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

 — A very common weed. 



U. THIiASPI, Tourn. Penntcress. 

 T. arvense, L. (Field Penntcress. 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. lyEPIO'IIIIM, L. Peppeegeass. 



1. L. Virgin'ieum, L. (Wild P.) Flowers small ; pc^aZs 

 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 or orbicular. — Railways and roadsides. 



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

 having the cotyledons incumbent instead of acoumbent, and 

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



3. 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. 

 — Eather 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. 



