CL. XIX.] SYNGENESIA POLYGAMIA STJPEBFLUA. 325 



hair-like, short ; anthers united into a cylindrical tube. Ger- 

 men inversely egg-shaped, small. Style thread-shaped, as long 

 as the stamens ; stigmas two, oblong, spreading, Seed in- 

 versely egg-shaped ; seed-down simple, sessile. Receptacle 

 naked, slightly convex. Name from senex, an old man. 395. 



* Florets all tubular. 



1. S. vulgdris. Common Groundsel. Flowers destitute of ray ; 



leaves pinnatifid, toothed, half embracing the stem. Stem about 



six .inches high, branched, with numerous corymbose, yellow 

 flowers. Annual: flowers from February to November: but in- 

 dividuals may be got in flower through the winter : grows in cul- 

 tivated and waste ground : common. Eng. Bot. vol. xi. pi. 747. 

 Eng. Fl. vol. iii. p. 428. 1190. 



** Flowers rayed, the ray rolled back. 



2. S\ viscosus. Stinking Groundsel. Rays revolute ; leaves half 

 embracing, pinnatifid, clammy; outer calyx loose, nearly as long 

 as the inner ; stem branched. The whole plant clammy, gene- 

 rally covered with dust, with a disagreeable smell : stem about a 

 foot high : flowers yellow. Annual : flowers from June to Octo- 

 ber : grows in waste ground, and among rubbish : not uncommon. 

 Eng. Bot. vol. i. pi. 32. Eng. Fl vol. iii. p. 429. 1191. 



3. & sylvdticus. Mountain Groundsel. Rays revolute ; leaves ses- 

 sile, pinnatifid, lobed, minutely toothed ; scales of the calyx li- 

 near ; stem erect, straight, branched, corymbose. Stem from 



six inches to two feet high, or more. It emits a disagreeable 

 odour. Annual : flowers in July and August : grows in dry bar- 

 ren pastures : common. Eng. Bot. vol. xi. pi. 784. Eng. Fl. vol. iii. 

 p. 430. A variety, with the leaves distinctly eared and embracing 

 the stem, is the /S. lividus, Green-scaled Groundsel. Eng. Bot. vol. 

 xxxv. pi. 2515. Eng. Fl. vol. iii. p. 430. 1192. 



*** Flowers with spreading rays ; leaves pinnatifid. 



4. S. tenuifolius. Hoary Ragwort. Ray spreading, with oblong, 

 minutely toothed corollas ; leaves pinnatifid, paler and cottony 



beneath ; stem erect, loosely cottony. Stem two or three feet 



high, furrowed : leaves alternate, sessile : flowers yellow. Pe- 

 rennial: flowers in July and August : grows in woods, hedges, 

 and by roads, in England : frequent. Eng. Bot. vol. viii. pi. 574. 

 Eng. FL vol. iii. p. 432. 1193. 



5. S. Jacobce'a. Common Ragwort. Ray spreading, somewhat 

 revolute, with oblong, toothed corollas; leaves lyrate, twice pin- 

 natifid, divaricate, toothed, smooth ; seeds hairy.- Stem about 

 two feet high, purple at the base, branched : flowers golden yel- 

 low, very numerous, in corymbs, emitting a strong smell of honey. 

 Perennial : flowers in July and August : ^ grows in dry pastures, 

 and by roads : common. Eng. Bot. vol. xvi. pi. 1130. Eng. Fl. vol. 

 iii. p. 438. 1194. 



6. S, aqudticus. Marsh Ragwort. Ray spreading ; with ellipti- 

 cal, toothed corollas ; leaves lyrate, serrate, smooth, the lower in- 

 versely egg-shaped, undivided ; seeds smooth. Stem about two 



feet high, purple : flowers larger and fewer than in the preceding 

 species, scentless, in corymbs. Perennial : flowers in July and 

 August : grows by the sides of rivers, and in wet pastures : com- 

 mon. Eng. Bot.\Q\. xvi. pi. 1131. Eng. Fl.yol. iii. p. 434. 1195. 



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