20 COMMO?f CANADIAN WILD PLANTS. 



root-Stock. Leaves pinnate, leaflets 7-15, those of the lower 

 leaves rounded and stalked, entire or nearly so. — Bogs. 



3. C. hirsu'ta, L. (Small Bitter Cress.) Flowers white, 

 small. Eoot fibrous. Leaves pinnate, leaflets 5-11, the 

 terminal leaflets largest. Pods' erect, slender. — Wet places. 



6. AK'ABIS, L. Book Chess. 

 * Seeds in one row in each, cell, nearly as broad as the partition. 



1. A. Ijrra'ta, L. (Low E.) Flowers white, petals twio^ 

 as long as the calyx. Stem branching from the base. Eadi- 

 cal leaves clustered, pinnatifid, the terminal lobe largest ; 

 stem-leaves scattered, linear, with tapering .base; ' Pods 

 slender, erect, and spreading. — Eocky or sandy shores. 



2. A. hirsu'ta, Scop. (Hairy E.) Flowers greenish- 

 white, small, petals slightly longer than the calyx. Stem- 

 leaves many, rough, sagittate ; often a. dense rosette at the 

 base of the stem. Pods erect, straight. Stems 1-2 feet high, 

 2 or 3 from the same root. — Eocky shores and dry plains. 



. A. Isevig'a'ta, DC. (Smooth E.) Flowers white, rather 

 small. Leaves linear or lanceolate, entire or slightly toothed, 

 sagittate, clasping. Pods long and narrow, recurved-sp rfiad - 

 ing. Stem glaucous, 1-2 feet high. — Dry hill-sides. Easny 

 recognized by the pods. 



4. A. Canadensis, L. (Sickle-pod.) .Flowers whitish, 

 with linear petals, about twice the length of the calyx." 

 Stem-leaves pointed at both, ends, downy, the lo-Hjer ones 

 toothed. TPods 2-3 inches long, scythe-shaped, hanging. 

 Stem 2-3 feet high. A striking plant when the pods are 

 f nlly formed. — Dry woods and ravines. 



5. A. petrse'a. Lam. Petals rose-colour or whitish. Pods 

 shorter and less flat than A. lyrata. Leaves spathulate 

 or oblong, entire or sparingly toothed. — Hocks ; reported 

 from New Brunswick. 



* * Seeds in two distinct rows in each cell, narrower than the partition. 



6. A. perfolia'ta. Lam. (Toweb Mustard). Flowers 

 yellowish-white. Petals scarcely longer than the calyx. 



