XXV11I SYNOPSIS OF GENERA. 



* * * Legume more or less perfectly 2-celled ; without the former Cha- 



racters. 



ASTRAGALUS. Legume tumid, of 2 longitudinal cells, p. 76. 



* * * * Legume with scarcely more than 1 seed ; without the former cha- 



racters. 



TRIFOLIUM. Legume hardly longer than the calyx, with 1 seed, rarely 

 more, deciduous, not bursting, p. 77- 



MELILOTUS. Legume 1- or few-seeded, indehiscent, longer than the 

 calyx. Petals distinct, deciduous. Flowers racemose. Leaves ternate. 

 p. 76. 



***** Legume either jointed, or spiral ; without the former characters. 



ORNITHOPUS. Legume somewhat cylindrical, curved, of many close, 

 single-seeded joints. Keel rounded, p. 85. 



MEDICAGO. Legume spiral, compressed, somewhat membranous. Pistil 

 pressing the keel downwards, p. 80. 



****** Legume of \ cell, with numerous seeds, without the former 



characters. 



LOTUS. Legume cylindrical, spongy within. Wings converging at their 

 upper edges. Filam. partly dilated, p. 79. 



Class XVIII. POLYADELPHIA. Filaments combined, in more 

 than two sets. 



Order I. POLYANDRIA. Stamens numerous. 



HYPERICUM. Cal. inferior, in 5 deep divisions. Pet. 5. Filam. united 

 at the base, into 3 or 5 parcels. Caps, with many needs. Hypericinece, 

 p. 38. 



Class XIX. SYNGENESIA. Anthers united into a tube. Flowers 

 compound. (Nat. Ord. COMPOSITE, Juss.J 



Order I. JQUALIS. All the florets perfect. 

 * All the Corollas ligulate or strap-shaped. CICHORACE^, Juss. 



TRAGOPOGON. Receptacle naked. Down stalked, feathery. Cal. simple, 

 of several equal scales, in 2 rows. p. 165. 



PICRIS. Involucre double, inner of many compact, upright, equal scales, 

 outer of several lax, small, linear ones. Recept. naked. Pappus sessile, 

 slightly feathery. Fruit transversely striated, p. 162. 



HELMINTHIA. Involucre double; inner of eight close scales, outer of 

 four large, lax, leafy ones. Recept. naked. Pappus feathery, stalked. Fruit 

 transversely striated, p. 161. 



SONCHUS. Recept. naked. Down sessile, simple. Cal. simple, imbri- 

 cated, swelling at the base. p. 159- 



PIIENANTHES. Recept. naked. Down nearly sessile, simple. Cal. 

 double. Florets in a single row. p. 160. 



