20 6. CRUCIFER^E. 



Var. DANICA, L. Radical le. reniform, somewhat lobed, stem 

 le. mostly petiolate, triangular or 5-lobed. Seeds small. 

 Common. On the shores of the Clyde. (B) A. P. 58. 



2. C. A'NGLICA, L. English Scurvy -Grass. Radical le. large, 

 oval or oblong, entire, stem le. mostly sessile, with a few large 

 teeth. Pouch elliptical, much larger than in the last, veined. 

 Seeds large. Fleshy Plants. 



Frequent. Bowling, Dumbarton, &c. (E) A. B. 58. 



16. ARMORACIA. Horse-Radish. 



1. A. AMPHIBIA, Koch. Leaves oblong pinnatifid or serrate. 

 Eoot fibrous. Petals yellow, twice as long as the calyx. Pouch 

 2 3 times shorter than the pedicel. Stigma capitate. 



Banks of rivers and lochs. "Banks of Clyde, frequent. In the marsh "beyond 

 Fossil. In Bardowie Loch, near the house," Hopk. I have never been enabled 

 to find this plant in any of these stations, nor in the district. 



*2. A, RUSTICANA, Baumg. Horse-Radish. Radical le. on long 

 stalks 6 in. to a foot long, sinuate and toothed at the edges. 

 Roots long, cylindrical, very pungent. An outcast of gardens. 



17. DRAB A. Common Whitlow-Grass. 



D. VERNA, L. Stems numerous, 1 Gin. high. Le. all radical, 

 lanceolate, slightly toothed, hairy. Fl. white. Petals deeply 

 cloven. Pouch compressed, about twice as long as broad. 



Common. Tops of walls, dry banks and rocks. (B) A. 36. Banks of the 

 Forth and Clyde Canal at Fossil marsh ; Tollcross ; Cathkin hills, &c. 



D- muralis has become plentiful in many gardens. Botanic Garden as a weed; 

 Cumbrae, &c. 



18. CAMELfNA. Gold-of-Pleasure. 



* C. SATIVA, Cr. Stem erect, 1 3 ft. high. Le. sagittate, 

 lanceolate. Stem le. auricled, nearly entire, acute. Fl. small, 

 yellow. Pouch large, on long stalks, valves reticulated. Seeds 

 rough, pale yellowish brown. 



Introduced amongst flax and corn. In a field of flax near Kirkintilloch ; near 

 Chryston; Lambhill, &c. A. 67. ' 



19. SUBULARIA. Awl-wort. 



S. AQUATICA, L. Water Awl-ivort. Scape 1 4 in. high. Le. 

 nearly cylindrical, slender. Fl. few, small, white ; valves with a 

 dorsal nerve. Seeds, 2 6 in each cell. Plant dull green, smooth, 

 somewhat fleshy. 



Shallow margins of Alpine lakes. (S) P. 7. Loch Lomond. 



20. THLASPI. Penny-Cress. 



* T. ARVENSE, L. Field Penny -Cress. Mithridate Mustard. 



