COMPOUND FLOWERS 171 



slems are branched. Gravelly places ; common. — Fl. July to 

 September. Annual. 



3. S. viscosiis (Viscid Groundsel). — Near S. sylvaticus in habit, 

 but clothed with viscid down ; the flower-lM'ads arc less numerous, 

 with the outer hrads of the involucre about half as long as the inner. 

 Similar situations, bat more local than 5. sylvaticus. — Fl. July to 

 September. Annual. 



4. .S. Jacohaia (Common Rag-wort). — Stem erect, 2-3 feet high ; 

 flower-heads large, bright yellow, with spreadmg rays, corymbose ; 

 leaves pinnatiiid, with smaller lobes at the base. Meadows and 

 wet places ; common. — Fl. July to September. Perennial. 



5. 5. aqiiaticus (Marsh Rag-wort). — Much resembling the last, 

 but more spreading ; the flower-heads larger, in a looser corymb ; 

 lower leaves undivided, toothed ; upper with a few oblong lobes 

 near the base. Wet places ; common. — Fl. July to September. 

 Perennial. 



6. 5. tenuifoliiis (Hoary Rag-wort). — Flowers with spreading rays ; 

 leaves pinnatifid, with very narrow segments, downy beneath. 

 Much like S. Jacobcea, but distinguished by its sending up numerous 

 cottony stems from the same root, and by its regularly divided 

 leaves, the segments of which are slightly rolled back at the edges. 

 Dry banks in a limestone or chalky soil ; not common. — Fl. July, 

 August. Perennial. 



7. 5. palustris (Mar.sh Flea-wort). — Shaggy ; a stout plant, 

 2-3 feet high, with a hollow, much branched stem ; and numerous 

 lanceolate, sessile leaves, which are wavy at the edges and toothed, 

 flowers yellow, in a corymb. Found only in the Fen districts of 

 Eastern England ; rare. — Fl. June, July. Perennial. 



8. 5. campestris (Field Flea-wort). — A small plant, 6-8 inches 

 high, shaggy ; stem unbranched ; root-leaves oblong, nearly entire ; 

 stem-leaves narrow, tapering ; flower-heads of a few yellow flowers 

 in a terminal corymb, which is almost an umbel. Chalky downs ; 

 rare. — Fl. May, June. Perennial. 



9. S. squalidus (Inelegant Rag-wort). — Grows about a foot high, 

 with large bright yellow flowers; the leaves are glabrous, somewhat 

 thick, and are deeply pinnatifid. The naming is inapt, for it is 

 quite the prettiest British species. Old walls about Oxford, and 

 Bideford, Devon. Not indigenous. — Fl. June to October. Annual 

 or biennial. 



10. S. paludosus (Great Fen Rag-wort). — A large aquatic plant, 

 2-6 feet high ; stem hollow, unbranched ; leaves lanceolate, toothed, 

 cottony beneath ; flower-heads large, many-rayed, in a loose corymb. 

 Confined to the Fen districts of Eastern England ; rare. — Fl. May 

 to July. Perennial, 



