166 SYNGENESIA POLYGAMIA SUPERFLUA. [CI. 19. 



3. E. alp'inus, 7. 464. (Alpine F.) Stem mostly single-flowered. Ca- 



lyx hairy. Radius spreading ; twice the length of the seed-down. 

 Alpine rocks, Scot. If. 7. 4 — 6 in. Flor. of the mar gin light pur p. 



4. E. uniflorus, 34. 2416. (Pale-rayed F.) Stem single-flowered. 



Calyx woolly. Radius erect, twice the length of the seed-down. 

 Mount, of Scot. %. 7. Var. of E. alp. 



397. TUSSILiGO. Colt's-foot, and Butter-bur. 



1. T. Fdrfara, 6. 429. (Colt's-foot.) Stalks simple-flowered, clothed 



with scaly bracteas. Flowers radiant. Leaves heart-shaped, an- 

 gular and toothed. 

 Clayey sit. If. 3, 4. L. white and cottony beneath. Fl. bright yell. 



2. T. Petasites, 6. 431. (Butter-Bur.) Panicle densely, ovate-oblong. 



Flowers flosculous. Leaves heart-shaped, unequally toothed, 

 three-ribbed at the base. — Petasites vulgar., Br. Fl. 



Humid mead. If . 4. L. very large, often 3f. Germens generally 

 abortive. 



/8. T. hybrida, 6. 430, similar in foliage, has mostly perfect ger- 

 mens and stigmas. 



398. SENeCIO. Groundsel, or Ragweed. 

 * Flowers without rays. 



1. S. vulgaris, 11. 747. (Common G.) Flowers dispersed, without 



rays. Leaves pinnatifid, toothed, obtuse, smoothish ; clasping at 

 the base. 

 Cult. & waste gr. © . 3 — 1 0. Smoothish, shining. Fl. a yell, disk only. 



** Flowers with speedily revolute rays. 



2. S. viscosus, 1. 32. (Stinking G.) Rays revolute. Leaves pinnatifid, 



viscid. Outer calyx lax, about as long as the inner. Stem with 

 many spreading branches. 

 Waste chalky gr., rare. 0. 7 — 10. Fetid, hairy. Fl. large, golden. 



3. S. lividus, 35. 2515. (Green-scaled G.) Rays revolute. Leaves 



clasping the stem, lanceolate, pinnatifid, and toothed. Outer 

 calyx short, with sharp, not discoloured points. 

 Barren heaths. 0.9, 10. Habit of the next. Fl. small, golden yell. 



4. S. sylvaticus, 11. 748. (Mountain G.) Rays revolute. Leaves ses- 



sile, pinnatifid, lobed and toothed. Outer calyx short, with 

 bluntish discoloured tips. 

 Bushy and heathy pi. . 7, 8. Fetid and downy. Stem wand-like, 

 3-4/. leafy. 



*** Flowers with spreading rays. Leaves pinnatifid. 



5. S. squdlidus, 9. 600. (Inelegant Ragweed.) Rays spreading, el- 



liptical, entire. Leaves smooth, pinnatifid, with distant, and 

 somewhat linear, segments. 

 Walls at Oxford : not wild. 0. 6 — 10. Smooth. Corymb lax. Fl. 

 largish, golden. 



