LEGUMINOS^E 



433 



Embryo transverse to the placenta, large and completely filling 

 the seed, curved, pale yellow ; cotyledons more or less distinctly 

 obovate in outline, sessile, 

 plano-convex, rounded at 

 the apex, somewhat tapered 

 towards the base, lying in 

 the broader plane of the 

 seed, with their edges to the 

 placenta ; radicle about half 

 as long as the cotyledons, 

 oblong, obtusely pointed at 

 the upper end of the seed 

 and consequently superior, 

 but again curved downwards 

 to the micropyle close to the 

 hilum. 



Pericarp and testa, 



Seedling (fig. 281). 



Primary root long, flesh) 7 , 

 tapering slightly downwards, 

 colourless, with a few lateral 

 rootlets at irregular intervals. 



Hypocotyl very short or 

 soon indistinguishable from 

 the root, emerging between 

 the valves of the fruit, which 

 remain attached to it long 

 after germination. 



Cotyledons oblique, 

 broadly rotund-obovate, en- 

 tire, fleshy, convex above, 

 subrevolute at the margins, 

 sessile, perfoliate at the base, 

 forming a short turbinate 

 tube, alternately penninerved 

 with few incurved nerves, car- 

 tilaginous and subscabrousat 

 the margin, 1-1-2 cm. long, 

 1-1-2 or 1-3 cm. broad. 



Stem herbaceous, elongated when about to flower, arising from 

 a perennial rootstock. 



Leaves compound, radical and cauline, alternate, stipulate, 

 petiolate (leaflets petiolulate, exstipellate), alternately and incurvi- 



FIG. 281. Hedysarum coronarium. 

 Nat. size. 



