LEGUMINOS^E 



405 



Stem erect, terete, herbaceous, downy ; 1st internode 4-7 mm. 

 ong ; 2nd 6-10 mm. 



First leaves simple, cauline, alternate, obovate, obtuse, almost 

 trilobed, downy, especially on the 

 under side, finely ciliated, light 

 green, petiolate, exstipulate, al- 

 ternately pinnatinerved ; petiole 

 terete, downy. 



Crotalaria sp. 



Hypocotyl more slender than 

 in preceding species, 4-8 mm. 

 long, and reddish-green. 



Cotyledons rather narrower 

 and constricted about the middle, 

 with a prominent midrib only. 



Stem, 1st internode from 

 1-5-2 cm. long ; 2nd internode 

 only 2-4 mm. 



Leaves opposite, acutely 

 ovate, ciliate ; hairy petioles 

 about half the length of the 

 leaf, exstipulate, slightly droop- 

 ing. 



Lupinus arboreus, Sims. (fig. 

 264). 



Primary root a rather long, 

 fleshy, colourless tap-root, with a 

 few thick lateral rootlets, often 

 tuberculated. 



Hypocotyl 2-8 cm. long, 2-3 

 mm. thick, fleshy, terete with 

 horizontal ridges or articulations, 

 shining white where covered by 

 soil, purplish-red above, quite 



FIG. 264. Lupinus arboreus. 

 Nat. size. 



Cotyledons equal, or nearly 

 so, including the petiole 1-5-2 

 cm. long, 6-8 mm. broad, oblong, 

 oblique at the base, rounded 

 at the apex, entire, obscurely 

 penninerved, fleshy or succulent, glabrous and dark green on 



