6. CRUCIFEILE. 1 7 



5. SINAPIS. Mustard. 



* 1. S. NIGRA, L. Common Black- Mustard. Stem branched 

 in the upper part, 1 3 feet high. Lower le. large, lyrate rough ; 

 upper ones lanceolate, entire, all stalked. Fl. yellow. Pods 

 adpressed, somewhat 4-aiigled, 1 -nerved. 



Rare. Only found on rubbish or near where cultivated. Banks of Clyde near 

 Carmyle. (E) A. 69. 



2. S. AKVENSIS, L. Wild Mustard, Charlock. Stem erect or 

 ascending, furrowed, 1 2 ft. high. Lower leaves sublyrate, 

 upper ones simiated and toothed. Sepals very much spread. 

 Fl. large bright yellow. Pods glabrous, sometimes with reflexed 

 hairs ; valves with 3 5 prominent ribs. Beaks frequently con- 

 taining a single seed. Whole plant rough. 



Very common. In corn fields, &c. (B) A. 5 9. 



*3. S. ALBA, L. White- Mustard. Stem erect, furrowed, 1 2 

 ft. high. Le. pinnatifid, stalked, variously cut and toothed. Fl. 

 bright yellow. Pods swollen, hispid, valves with 5 ribs ; beak 

 broad, 2-edged, flattened, often with a single seed at the base. 



Rare. An escape from cultivation, or on rubbish. Banks of Clyde below Gov an 

 (E) A. 67. 



6. SlSYMBRIUM. 



1. S. OFFICINALE, Scop. Hedge-Mustard. Stem erect, 1 3 

 ft. high. Le. pinnatifid, sublyrate, segments oblong, hairy. Fl. 

 very small, pale yellow. Pods subulate, straight, adpressed to 

 the stem, dowoy. 



Very common by road sides and waste places. (B) A. 6 7. 



2. S. THALIANUM, Hook. Thale-Cress. Stem erect, slender, 

 4 10 in. high. L. oblong-lanceolate, attenuate at the base, 

 slightly toothed, downy. Stem le. distant, sessile, elliptical, 

 entire or dentate. Fl. small, white. Pods spreading, 1 -nerved, 

 angular. 



Frequent. On wall tops and dry banks. (B) A. 45 and 910 Cathcart ; 

 Tollcross; Woodside Road; Cambuslang; Gourock, &c. 



7. ALLIAKIA. Garlick-Mustard. 



A. OFFICINALIS, D.C. Garlic-Mustard, Jack-by-the-ffedge, or 

 Sauce-alone. Stem 2 4 ft. high. Le. rounded or triangular, 

 cordate at the base, crenate or toothed. Fl. white. Pods smooth , 

 1 2 inches long, erect or spreading, slightly knotted with swollen 

 seeds. Le. smelling like garlic when bruised. 



Frequent. Hedge banks and open places in woods. (B) B. 56. Near Govan ; 

 hedge near Dalmarnock Bridge; Carmyle and Kenmuir ; Cambuslang; Gourock 

 <fec. 



B 



