Class XIX. Order I. 289 



ing teeth. Flower stalks axillary and terminal, round, covered 

 with down. Flowers erect, yellow. Calyx somewhat downy, 

 with linear-lanceolate scales. Borders of fields. August. Pe- 

 rennial. 



HIERACIUM PANICULATUM. Willd. Pdnicled Haivkweed. 



Smoothish ; stem erect, leafy, panided, whitish- 

 downy below ; pedicels capillary ; leaves lanceolate, 

 naked, toothed, membranous. 



Found in damp, shady woods. Stem slender, a foot high. 

 Leaves thin, sessile, lanceolate, slightly toothed, paler beneath. 

 Panicle much branched, its branches elongated and very slender. 

 Flowers numerous, small, yellow. Walt ham. August. Peren- 

 nial? 



305. KRIGIA. 



KRIGIA VIRGINICA. Willd. 



Scape one flowered ; leaves lanceolate, lyrate, 

 smooth. 



Syn. HrosERis VIRGINICA. L. 



One of the smallest compound flowers. The first leaves are 

 generally elliptical or lanceolate. The rest are pinnatifid or ly- 

 rate, with scattered, irregular segments. Scapes erect, long 

 and slender, a little striated, smooth, with a few, fine, scattered 

 hairs. Flowers small, solitary. Calyx composed of a simple 

 row of smooth leafets. Corolla yellow. Seeds oblong, blackish, 

 crowned with a border of five short, roundish, membranous 

 scales, separated by bristles several times their length. On 

 sandy hills and road sides, flowering in June and July. Annual. 



306. SONCHUS. 



SONCHUS OLERACEUS. L. Common Sow-Thistle. 



Peduncles downy ; calyx smooth ; leaves runcinate, 

 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 

 37 



