Class XIX. Order L 180 



HIEUACIUM KALMII. L. Halm's Hawkweed. 



Stem erect, many flowered ; leaves lanceolate, 

 toothed ; peduncles downy. L. 



Stem erect, tall, nearly smooth, downy at top. Leaves al- 

 ternate, subsessile, oval-lanceolate, acuminate, with acute, di- 

 verging teeth. Flower stalks axillary and terminal, round, cov- 

 ered with whitish down. Flowers erect, yellow. Calyx some- 

 what downy. Borders of fields. August. Perennial. 



221. SONCHUS. 

 SONOHUS OLERAOEUS. L. Common Saw-thistle. 



Peduncles downy ; calyx smooth ; leaves run- 

 einate, toothed. Sm. 



Appears late in the season, in every species of waste ground 

 and rubbish. Stem erect, three feet high, round, smooth, brit- 

 tle, hollow. Leaves smooth, toothed and lobed in a runcinate 

 manner, clasping the stem, their lobes bordered with teeth or 

 spines. Peduncles axillary and terminal, covered with a white, 

 fine, deciduous down. Calyx smooth, swelling out at base. 

 Corolla yellow. Flowers about half the size of the dandelion. 

 Down fine and smooth. September. Annual. 



222. ARCTIUM. 



ARCTIUM LAPPA. L. Burdock, 



Leaves heart- shaped, unarmed, petioled. L. 



No plant is better known than this. Its very large, heart- 

 shaped, wavy leaves cover the ground for some extent around 

 it. The stem, which rises three or four feet, is branching, 

 round, furrowed, and rough. Flowers numerous, terminal, 

 purple. This plant intrudes itself on every one's acquaintance 

 by the sharp, firm hooks at the end of the calyx scales, which 

 attach themselves to the clothes, and serve as a remarkable me- 



