SEN 



OR, BOTANICAL DICTIONARY. 



SEN 



561 



** Flowers radiate; Ray revolute. 



17. Senecio TriHorus ; Three-flowered Groundsel. Corol- 

 las revolute ; leaves sessile, sinuate ; calices conical ; scales 

 very small, untouched. Native of Egypt. 



18. Senecio -SSgyptus ; Egyptian Groundsel. Corollas re- 

 volute ; leaves embracing, sinuate ; scales of the calix shorter, 

 entire, mortified. Native of Egypt. 



19. Senecio Cinerascens; Gray Groundsel. Corollets 

 revolute; leaves pinnatifid, tomentose, rolled back at the 

 edge ; panicle patulous ; outer scales of the calix spreading. 

 It flowers from May to July. Native of the Cape. 



20. Senecio Lividus; Livid Groundsel. Corollas revolute; 

 leaves embracing, lanceolate, toothed ; scales of the calix 

 very short, untouched. Annual. Native of Spain, &c. 



21. Senecio Trilobus ; Three-lobed Groundsel. Corollas 

 revolute; leaves embracing; scales of the calix mortified, 

 lacerated. Annual. Native of Spain. 



22. Senecio Viscosus ; Stinking Groundsel. Corollas revo- 

 lute ; calicles loose, nearly equal to the perianth ; leaves pin- 

 natifid, viscid. Stem very much branched, patulous; root 

 annual ; flowers of a bright gold-colour. Native of Europe, 

 in a calcareous or sandy soil; flowering from July to October. 

 Found in the fen-banks of the isle of Ely, as about Megpole 

 and Chatteress ; also on the sands of Gamlingay ; at Baldon 

 in Oxfordshire ; about the chalk-pits at Dartford in Kent ; 

 and in several parts of Scotland. 



23. Senecio Sylvaticus ; Mountain Groundsel. Corollas 

 revolute ; calicle very short ; leaves pinnatifid, lobed, tooth- 

 letted ; stem erect, strict, corymbed ; root annual. It flowers 

 in July. Native of Europe, in a gravelly or sandy soil, in 

 bushy spots upon heaths and commons ; where trees or furze 

 have been cut down, especially where Fern or other plants 

 have been burnt in the autumn. 



24. Senecio Nebrodensis. Corollas revolute; leaves lyrate, 

 sinuate, obtuse, petioled ; stem hirsute. Native of Siberia, 

 Spain, and the Pyrenees. 



25. Senecio Glaucus ; Sea-green Groundsel. Corollas re- 

 volute ; leaves embracing, lanceolate, obtuse, toothed, quite 

 entire. Annual. Native of Egypt. 



26. Senecio Varicosus ; Varicose Groundsel. Corollas re- 

 volute ; leaves ovate, petioled, toothed, with little ventricose 

 dots. Native of Egypt. 



27. Senecio Humilis ; Dwarf Groundsel. Corollas revo- 

 lute ; leaves subspatulate, obtuse, doubly toothed ; stem pro- 

 cumbent; root annual; branches alternate, short, spreading, 

 three or four. Native of Barbary. 



28. Senecio Leucanthemifolins. Corollas revolnte; leaves 

 elliptic, spatulate, smooth, gashed, toothed ; corymb few- 

 flowered. Roots numerous, capillary, twisted, in bundles. 

 Native of all Barbary. 



*** Flowers radiate; Ray spreading; Leaves pinnatifid. 



29. Senecio Hastatus ; Spleenwort-leaved Groundsel. Co- 

 rollas radiant; petioles embracing; peduncles three times 

 as long as the leaf; leaves hastate, sinuate. Native of the 

 Cape of Good Hope, where it flowers during most part of the 

 summer. Cut off the side-shoots in any of the summer 

 months, and plant them in a shady border, where, in five or 

 six weeks, they will take root, and may then be taken up and 

 planted in pots, placing them in the shade till they are well 

 rooted ; then remove them to an open situation, observing to 



vater them in dry weather. In winter, place them under a 

 rame, or in the dry-stove. This management applies to the 

 numerous species from the Cape of Good Hope. 



30. Senecio Pubigerus. Corollas radiant; radical petioles 

 coolly ; leaves runcinate. Stems quite simple, lateral ; flowers 



ssile; root perennial. There is one terminating flower, 



and frequently lateral ones that are sessile ; they are yellow, 

 with a violet-coloured ray. Native of the Cape. 



31. Senecio Venustus ; Wing-leaved Groundsel. Corollas 

 radiant; stem, calix, and leaves, smooth ; leaves pinnatifid ; 

 segments linear, acute, toothed. Biennial ; flowering from 

 July to September.- Native of the Cape. 



32. Senecio Elegans ; Elegant Groundsel, or Purple Jaco- 

 bcea. Corollas radiant; leaves hairy, viscid, pinnatifid, equal, 

 spreading very much; rachis narrowed below; calices rough- 

 haired. This is an annual plant, having many herbaceous 

 branching stalks, nearly three feet high. The flowers are 

 produced in bunches on the top of the stalks; they are large, 

 the ray of a beautiful purple colour, and the disk yellow. 

 It flowers from June or July till the autumnal frosts come on. 

 A variety with very double flowers, and another with white 

 equally double, are frequently preferred, especially the for- 

 mer, to the single plant. Native of the Cape. If the seeds, 

 which ripen in autumn, be permitted to scatter, plenty of 

 plants will rise in the spring following ; or if sown upon a 

 bed of common earth in the spring, the plants may be trans- 

 planted into the borders of the flower-garden. If some of 

 the plants be put into pots, and housed in winter, they may 

 be preserved till spring. The varieties with double flowers 

 are continued by cuttings. 



33. Senecio Squalidus; Inelegant Ragwort. Corollas 

 radiant, spreading; florets elliptic, quite entire; leaves pinna- 

 tifid, the segments sublinear, distant. Root annual; stem 

 various in luxuriance, erect, branched, often a little hairy; 

 flowers of a bright golden yellow. The whole habit, and a 

 peculiar smell somewhat like Tansy or Mugwort, sufficiently 

 distinguish this plant from all the jest. It flowers from 

 June to the end of autumn. Native of the south of France. 

 Found in abundance on walls near Oxford. 



34. Senecio Erucifolius ; Rocket-leaved Groundsel. Co- 

 rollas radiant; leaves pinnatifid, toothed, somewhat rough- 

 haired ; stem erect. Native of Sweden and Germany. 



35. Senecio Tenuifolius ; Hoary Groundsel, or Ragwort. 

 Corollas radiant, spreading; leaves pinnatifid, subrevolute, 

 beneath paler and pubescent. Stem erect, villose ; root per- 

 ennial, moderately creeping. No plant is more valuable in the 

 appearance of its foliage. On a calcareous soil the leaves are 

 much rolled back, and quite white beneath, with a thick 

 cottony web, of which the stem always more or less partakes: 

 in damp shady places they are almost flat and green, though 

 always paler, and somewhat shaggy on the under side. These 

 are the extremes of the two varieties, but intermediate speci- 

 mens may easily be found. Native of Austria and England. 

 Found about London, near woods, under hedges, and among 

 bushes, as about the Oak-of-Honour wood, near Peckham ; 

 also at Holm in Norfolk ; on the Bath hills ; near Bungay in 

 Suffolk, &c. It flowers in August. 



36. Senecio Incanus ; Downy Groundsel. Corollas radi- 

 ant; leaves tomentose on both sides, subpinnate, obtuse; 

 corymb roundish. Perennial. Stalks seldom a foot high. It 

 flowers in July and August. Native of the Alps, Austria, 

 Carniola, Silesia, the south of France, and the Pyrenees. 

 Slip off the heads in spring, and plant them in a bed of loamy 

 earth, in a shady situation : when they have put out roots, 

 transplant them into an east border, for they prefer a situa- 

 tion not much exposed to the sun. Having fine hoary leaves, 

 and gold-coloured flowers, this species makes a pretty diver- 

 sity when mixed with other plants. Requiring little Culture, 

 and not taking up much room, it deserves a place in small 

 gardens. 



37. Senecio Abrotanifolius ; Southernwood-leaved Groundsel. 

 Corollas radiant ; leaves pinnatifid, jagged ; leaflets linear 



