Order IV. 
SYNGENESIA NECESSARIA. 
743 
12695 Radiant florets fertile, Stem erect, Leaves hoary viscid oblong amplexicaul. mucronate-toothed 
12696 Radiant florets fertile. Leaves pinnatifid lyrate angular toothed downy beneath 
12697 Radiant florets fertile. Stem erect. Leaves pinnatifid scabrous downy beneatli revolute at edge 
12698 Radiant florets fertile. Outer scales of invol. reflexed cuneate obi. with a broad short point somew. cobw. 
12699 Radiant florets fertile. Stem erect. Leaves i)innatifid lyrate hoary downy beneath, Invol. imbricated 
12700 SteiTiless, Leaves lyrate pinnatifid hoary beneath o-nerved. Outer scales of invol. linear recurved 
12701 Radi. flor. fertile. Stem erect. Branches downy hairy, Lvs. pinnatif downy ben. : seg. lin. lane, angul. downy 
12702 Radiant florets fertile, Stem erect, Pedunc. hairy, Lvs pinnatif hoary downy ben. : seg. lane, angul. toothed 
12703 Radiant florets fertile, Stem erect. Leaves downy beneath : segm. linear subpinnatifid wavy 
12704 Radiant florets fertile. Leaves hoary downy long-stalked pinnatifid : segm. lanceolate blunt toothed 
12705 Leaves lanceolate glabrous. Heads panicled 
12706 Leaves obovate serrate downy. Spines branched 
12707 Leaves lanceolate pinnatifid-toothed scabrous. Spines branchea 
12706 Leaves lanceolate inucronate somewhat stalked smooth serrated, Branches toothletted angular 
12709 Leaves obovate serrated stalked subdecurrent 
12710 Leaves oblong toothed-angular scabrous ^-amplexicaul. Branches furrowed 
12711 Leaves toothed pinnatifid hairy. Branches unarmed 
12712 Leaves pinnatifid smooth. Segments lanceolate unequally serrated 
12713 Leaves lanceolate scattered decurrent smooth entire, AxillcB woolly 
12714 Leaves pinnatifid : pinna? lanceolate entire decurrent 
12715 Leaves pectinate-pinnatifid downy : segm. linear toothed at the edge 
12716 Leaves pinnate filiform, Invol. hemispherical many-toothed 
12717 Leaves multifid pinnated linear, Joints of stem villous 
12718 Leaves lanceolate l-toothed on each side in the middle or entire. Peduncles axillary, Stem divaricating 
12719 Lower leaves lanceolate entire : upper sinuate toothed 
12720 Leaves lanceolate 3-nerved entire. Stem suffruticoso creeping 
12721 Leaves deeply pinnatifid glabrous : segments linear somewhat toothed. Stem herbaceous 
12722 Leaves pinnatifid very small. Peduncles long slender axillary 1-headed, Ray longer than disk 
12723 Leaves lanceolate entire somewhat fleshy. Stem erect 
12724 Leaves oblong toothletted smooth narrowed at base amplexicaul. Heads panicled 
12725 Radical leaves ovate angular toothed : cauline lanceolate entire 
1272rt Leaves entire : radical lanceolate ; cauline lanceolate subcordate ^-amplexicaul. Stem erect 
12727 Leaves entire : radical cordate ; cauline ovate-lanceol. cordate at base amplexicaul. Stem flaccid filiform 
12728 Leaves ovate somewhat toothed. Peduncles l-headed very long 
12729 Root tuberous, Leaves amplexicaul. Peduncles 1-headed 
12730 Leaves lanceolate smooth amplexicaul. Heads panicled 
12731 Stem dichotomous imbricated : leaflets acerose. Peduncle very long solitary in the divarications 
12732 Leaves filiform fleshjr. Stem shrubby 
12733 Leaves oblong entire. Stem arborescent fleshy with woolly scars 
12734 Fleshy naked smooth a span high. Leaves fascicled obovate sessile. Peduncle 1-headed 
12735 Shrubby villous. Leaves pinnatifid. Heads corymbose 
12736 Hispid erect, Leaves ovate serrated 5-nerved, Racemes terminal 
12737 Leaves pinnated : leaflets linear many-times lobed acute. Pericarps cuneiform hairy 
12738 The only species 
12739 Leaves entire and divided. Heads corymbose 
12740 Leaves linear silky 
12741 Stem erect prolifer. at summit, Lvs. lane, downy acute, Fls. capitate in the axils of branches and terminal 
12742 Stem erect dichotom. Lvs. lin. acum. downy, Fls. crowded axill. and term. Clust. much shorter than leaves 
12743 Stem erect subdichotomous. Leaves lanceolate spatulate downy, Flowers clustered axillary and terminal 
and Miscellaneous Particulars. 
horses, y^ros, a horse ; and given to this plant by Linnaeus for no reason whatever. Little plants resembling 
Tansy. 
1835. Soliva. Named by the authors of the Flora Peruviana, after Salvator Soliva, a Spanish physician and 
botanist. 
1836. Psiadia. From -i^/za?, a drop of dew, in allusion to the dew-bespangled foliage of the plants. 
1837. Eriocephaltis. From mov, wool, and x.i<pa,x-/i, a head, on account of the woolly grains collected in 
terminal heads. 
1838. Filago. All the parts of these plants arc covered with delicate threads or fila. 
3 B 4 
